A watchcase (2) including: a ceramic middle (3); a bezel (4) rotationally fitted on a surface (5) of the middle; and a ball click (8) for indexing the position of the bezel (4) relative to the middle (3), the ball click (8) resting in a blind hole (9) in the middle (3). The ball click (8) includes a body (80) with a collar (82) arranged to rest on the surface (5) of the middle in the vicinity of the blind hole (9) receiving the ball click (8), and a distal end (81) resting near the back of the blind hole (9).
A grinding tool (1) including an elongated tool body (2) including a first end (20) including a grinding head (3) with an abrasive plating (4), and a second end (21), an axial channel (5) running through the tool body (2) from the second end (21), over a given length of the body, and at least one coolant feed tube arranged with the axial channel (5) to allow the grinding head (3) to eject a fluid introduced into the axial channel (5) at the second end (21), the grinding head (3) having a terminal outer surface (30) bounded by a peripheral outer surface (31), the terminal outer surface (30) having at least one groove (6a to 6f) running radially from the axial channel (5) to the peripheral outer surface (31), the groove being closed off along its length by the abrasive plating (4) to form the at least one coolant feed tube. The invention also relates to a method for making a galvanised grinding tool.
B24D 7/10 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front faceBushings or mountings therefor with cooling provisions
B24B 57/02 - Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
A decorated piece including a substrate (1) with a surface (1a) defining a first part with a positive and/or negative relief (2) relative to the plane of the surface (1a) and a second part extending in the plane of the surface (1a), the first or second parts forming a decoration (4), wherein the first part is formed from the substrate (1) made of an amorphous zirconium-based metallic alloy and in that the second part is formed from a ceramic layer (3) deposited on the substrate (1) or, conversely, in that the first part is formed from the ceramic layer (3) deposited on the substrate (1) and in that the second part is formed of the substrate (1) made of the amorphous zirconium-based metallic alloy. Also, a method for manufacturing the decorated piece.
An external part component (10) of a watch, of a fashion item or of a jewellery item, including a substrate (11) made of a transparent material, the substrate (11) including an upper face (110) opposite to a lower face (111), the external part component (10) including a base layer (12) deposited over a first portion (1101) of the upper face (110) and at least one secondary layer (13) deposited over the base layer (12) and over a second portion (1102) of the upper face (110), the first and second portions (1101, 1102) of the upper face (110) having different surface conditions.
A method for manufacturing a part (1) made of an electrically non-conductive material, the part (1) including at least one relief decoration (2a) of a noble metal or its alloy, the method including the steps of: depositing a first adhesion layer (4a) and a second adhesion layer (4b) on the surface (2) of an ébauche (3); depositing by electroforming a layer of the noble metal or of its alloy (5) on the second adhesion layer (4b); laser cutting the layer of noble metal or of its alloy (5) to outline the relief decoration (2a); depositing a protective layer (7) around the relief decoration (2a); removing the layer of noble metal or of its alloy (5) from portions (2c) not covered by the protective layer (7); removing the protective layer (7); and removing the first adhesion layer (4a) and optionally the second adhesion layer (4b) on the portions (2c).
A bracelet including a plurality of articulated units (10) formed by two centre links (13) rigidly connected to each other by first and second side links (11, 12) between which the centre links (13) are sandwiched, the first side link (11) including two pins (111), each engaged in a hole (131) extending through one of the centre links (13), each pin (111) being attached to a socket (121) provided on the second side link (12), each socket (121) including two separate attachment zones (123), via each of which the pin (111) is driven into the socket (121).
A method for manufacturing an item (1) including a through-decoration (2) filled with an enamel (3) to form a plique-à-jour enamel. The method includes: obtaining a blank (5) defined with an upper face (5a) and a lower face (5b) opposite the upper face (5a); removing part of the blank (5) from the upper face (5a) to produce a decoration (2a) that does not pass through to the lower face (5b) or, alternatively, in the previous step, obtaining said blank (5) directly with the non-through decoration (2a); depositing one or more layers of enamel (3) within the non-through decoration (2a) and firing the enamel (3) after each 10 layer has been deposited; machining, preferably by grinding, the lower face (5b) to reveal the enamel (3) and thus produce the item (1) with the through-decoration (2) filled with enamel (3).
A method for engraving and texturing an item (1) including a decoration (2) filled at least partially with an enamel (3), the method including a laser ablation step using a femtosecond or picosecond laser on the surface of the enamel (3) and/or within the enamel (3) to produce a structure (7).
A method for manufacturing an item (1) comprising a through-decoration (2) forming a so-called backlit plique-à-jour enamel, the method including obtaining a blank (5); removing part of the blank (5) from the inner face (5b) of the blank (5) to produce a decoration (2a) that does not pass through to the outer face (5a); depositing, from the inner face (5b), one or more layers of enamel (3) within the non-through decoration (2a); depositing, from the inner face (5b), a layer of luminescent material (4) on the enamel (3); depositing a protective layer (6) on the layer of luminescent material (4); and machining the outer face (5a) to reveal the enamel. Also, the related item.
A watertight watch case (1) including a middle (2), a back (3) and a sealing joint (4) disposed between the middle (2) and the back (3), the middle (2) and the back (3) being made of a ceramic material having a hardness greater than or equal to 1600 HV10, the middle (2) including a lower face (2a) and the back (3) including an upper face (3a), the lower and upper faces (2a, 3a) facing each other and serving as bearing surfaces for the sealing joint (4), the watertight watch case (1) wherein the lower and upper faces (2a, 3a) are formed by a set of concentric scratches (5). Also, a method for finishing the watertight watch case, which method comprises a satin-finishing step to obtain the set of concentric scratches (5).
A method for manufacturing monocrystalline sapphire directly in bar form, the method comprising the following steps of: providing a crucible (100), the crucible having a sapphire piece forming a seed for sapphire growth; placing the crucible (100) in an enclosure (4) under vacuum or a controlled atmosphere and heating the enclosure (4) to bring the crucible up to operating temperature; feeding the crucible with raw material (M) via a feed system (3) to form molten raw material (F) in the crucible; gradually solidify the molten raw material and gradually form a sapphire bar (C); interrupting the feed of raw material (M) and completely crystallising the molten material (F) remaining in the crucible; cooling the crucible to ambient temperature; recovering the sapphire bar bonded to the resulting seed, the seed and/or a portion of the bar, after being sawn, being able to form both a new back and a new seed.
C30B 13/32 - Mechanisms for moving either the charge or the heater
C30B 13/08 - Single-crystal growth by zone-meltingRefining by zone-melting adding crystallising materials or reactants forming it in situ to the molten zone
A method for the three-dimensional decoration of a substrate (11) to produce an external part (10) including the steps of: depositing at least one enamel carrier layer (12) on a decorative area of an external surface (110) of a ceramic substrate (11), the decorative area being intended to receive a decorative element (13); firing the substrate (11) comprising the carrier layer (12) so as to melt the latter; depositing a ceramic and/or metal decorative element (13) in solid form on the carrier layer (12); and sealing the decorative element (13) to the substrate (11) by firing to form an external part (10).
A method for the three-dimensional decoration of a substrate (11) to produce an external part (10), which method includes the steps of: depositing an enamel base layer (12) on an external surface (110) of a ceramic substrate (11); firing the substrate (11) covered with the base layer (12); etching the base layer (12) in a predefined decorative pattern to generate one or more blind cavities; depositing a decorative layer (13) of ceramic material and/or metallic material on the base layer (12) and the cavities (120) so as to fill said cavities (120) in order to form decorative elements (130); surfacing the decorative layer (13) to remove said layer deposited on the base layer (12); and tribofinishing the substrate (11), the base layer (12) and the decorative layer (13) to remove the base layer (12).
A multicolour cermet and/or ceramic article, and in particular a bezel of a timepiece, made by a method for injecting at least two materials of distinct colours, said article comprising a relief decoration of a colour different from the rest of the article, said decoration being made by laser ablation after injection of the two materials.
A cutting tool, including a body including lubrication orifices and having a gripping part to be fastened to a tool-holder chuck and an active part including an active surface along which helical grooves extend, the grooves being connected to a central hollow extending axially in the body of the tool via radial channels, the central hollow extending between a lubricant intake opening opposite a lubricant discharge opening, and the discharge opening being configured so as to generate a Venturi effect.
A method for manufacturing an external component of a watch, of a fashion item or of a jewellery item, including depositing an inner layer on all or part of the surface of an inner face of a substrate made of a transparent material, localised ablation of the inner layer, so as to conserve a part of the inner layer on a first portion of the inner face f the substrate, the ablation being performed so as to form at least one pocket opening onto a second portion of the inner face of the substrate and so as to structure the second portion of the inner fa of the substrate, treating the surface of the inner layer and of the second portion of the inner face of the substrate.
A method for manufacturing an external component of a watch, of a fashion item or of a jewellery item, wherein the external component includes depositing an opaque base layer on all or part of the surface of an inner face of a substrate made of a transparent material, localised ablation of the base layer by laser machining, so as to form at least one pocket the bottom of which has a diffraction grating.
An inlaid timepiece component (1) including a body (10) made of a metallic and/or ceramic material including at least one hollow (11) forming the impression of a decoration (12). The at least one hollow is completely filled with successive strata (13, 14, 15) formed by an agglomeration of particles (16) via a cold metallisation in order to form a timepiece component (1) inlaid with at least one decoration (12).
G04B 45/00 - Time-pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effect
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
B22F 10/25 - Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
B22F 10/66 - Treatment of workpieces or articles after build-up by mechanical means
B32B 3/10 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material
B32B 3/14 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by a face layer formed of separate pieces of material
B32B 3/26 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids
B32B 3/30 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids characterised by a layer formed with recesses or projections, e.g. grooved, ribbed
B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
B32B 15/16 - Layered products essentially comprising metal next to a particulate layer
B32B 15/18 - Layered products essentially comprising metal comprising iron or steel
B32B 15/20 - Layered products essentially comprising metal comprising aluminium or copper
C23C 24/08 - Coating starting from inorganic powder by application of heat or pressure and heat
C23C 28/00 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and
C23C 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material
C23C 30/00 - Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
G04B 19/12 - Selection of materials for dials or graduations
G04B 19/18 - Graduations on the crystal or glass, on the bezel, or on the rim
G04B 19/28 - Adjustable guide marks or pointers for indicating determined points of time
An aspect of the invention relates to a process for manufacturing a horological or jewellery external part element, including a body made of hard material, inlaid with a decoration made of a second material, where in a first step the body made of the hard material is formed, during this first step or in a second step, a hollow is produced in a face of the body, in a third step, the surface condition of the bottom and/or walls of said hollow is modified to increase the contact area thereof, in a fourth step, this hollow is filled with the second material is a composite material including at least one bio-sourced charged polymer including at least one bio-sourced charged polymer chosen for the wear resistance thereof, to constitute an insert forming a said decoration, in a fifth step, a surface finishing of said insert is performed.
A wristlet including a first row with at least one central link, a second row and a third row disposed respectively on either side of the first row and each including at least one lateral link, a connecting rod positioned in the three aligned holes of the first, second and third rows. The lateral link is hollow and includes in its hollow an insert delimited by two external lateral walls, the connecting rod including at each end a first banking and a second banking respectively bearing on a portion of the external lateral wall when the lateral link pivots about the connecting rod so as to limit the amplitude of rotation of the central link about the connecting rod.
A wristlet including a first row with at least one central link, a second row and a third row disposed respectively on either side of the first row and each including at least one lateral link, a connecting rod positioned in the three aligned holes of the first, second and third rows, wherein the connecting rod includes a shoulder, and wherein each hole of the central link opens at one of its ends onto a hollow formed in the central link, the hollow being delimited by a first wall and by a second wall serving as a first banking and as a second banking for the shoulder when the central link pivots about the connecting rod so as to limit the amplitude of rotation of the central link about the connecting rod.
An ornamental part, for example for a timepiece, jewellery or telephone, in particular a watch case middle, and its manufacturing method, the part at least partly including a hard material having a Vickers hardness greater than 1000 HV, the method including the following main steps: a step of producing a precursor from a mixture of at least one powder material with a binder, a step of injecting the precursor into a mould in order to form a green body, a step of sintering the green body in order to form a body of the future part from the hard material, and a step of depositing a polymer material coating on one face of the part, the deposition being carried out by moulding on the body, in particular by injection into a mould, the coating and the hard material being inseparable.
G04B 37/22 - Materials or processes of manufacturing pocket watch or wrist watch cases
B28B 1/26 - Producing shaped articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mouldMoulds therefor
G04B 39/00 - Watch crystalsFastening or sealing crystalsClock glasses
A44C 27/00 - Making jewellery or other personal adornments
C09D 169/00 - Coating compositions based on polycarbonatesCoating compositions based on derivatives of polycarbonates
25.
METHOD FOR MANUFACTURING A PART MADE OF A HARD MATERIAL WITH A POLYMER INSERT
A method is for manufacturing an ornamental part, for example a watch, jewellery or telephone part, in particular a watch crown. The part includes, at least partially, a hard material with a Vickers hardness exceeding 1,000 HV. The method includes the following main steps: producing a precursor from a mixture of at least one powder material with a binder, producing an insert made of a polymer material, the insert having, at least partially, a negative shape of that desired for at least one portion of the part, overmoulding the precursor onto the insert made of a polymer material by injection into a mould to form a green body, and sintering the green body to form a body of the future part from the hard material.
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
An external part component (10) of a watch, of a fashion item or of a jewellery item, including a substrate (11) made of a transparent material, the substrate (11) including an upper face (110) opposite to a lower face (111), the external part component (10) including a base layer (12) deposited over a first portion (1101) of the upper face (110) and at least one secondary layer (13) deposited over the base layer (12) and over a second portion (1102) of the upper face (110), the first and second portions (1101, 1102) of the upper face (110) having different surface conditions.
A method is for manufacturing a stone, in particular for a timepiece, from a mineral body of monocrystalline or polycrystalline type. The method includes an ablation step in which the body is subjected to a material ablation by scanning on at least one face of the body using ultra-short pulse laser radiation whose duration is less than one hundred picoseconds, and whose beam is guided by a precession system having at least three axes to at least partially cancel the angle of the laser cone, which is due to the focusing of the laser. A mineral stone of monocrystalline or polycrystalline type, in particular for a horological movement, is likely to be obtained by the method. The stone includes in particular a face provided with a peripheral rim, in particular for laterally clamping an endstone in a bearing.
METHOD FOR MANUFACTURING A MONOCRYSTALLINE SAPPHIRE SEED AS WELL AS A SAPPHIRE SINGLE-CRYSTAL WITH A PREFERRED CRYSTALLOGRAPHIC ORIENTATION AND EXTERNAL PART AND FUNCTIONAL COMPONENTS FOR WATCHMAKING AND JEWELLERY
A method for manufacturing a sapphire single-crystal, including melting alumina and/or sapphire in a crucible, and bringing the molten alumina and/or sapphire in contact with a monocrystalline sapphire seed to make the molten alumina and/or sapphire crystallise progressively according to a growth direction to form the sapphire single-crystal. The monocrystalline sapphire seed has a rhombohedral crystallographic structure defining three crystallographic axes [A], [C] and [M] perpendicular to each other and respectively perpendicular to the crystallographic planes. The monocrystalline sapphire seed is a plate delimited by two planar faces which extend parallel to and at a distance from each other, is obtained from an initial sapphire single-crystal which is cut so that one of the crystallographic axes of the monocrystalline sapphire plate forms with a normal to the planar faces of the monocrystalline sapphire plate an angle whose value is comprised between 5 and 85°.
A method for decorating a substrate which includes the succession of the following steps: provide the substrate; deposit a layer of a sacrificial material over a surface of the substrate; structure the sacrificial material layer so as to create in this sacrificial material layer a plurality of cavities to form a decorative or technical pattern; eliminate the sacrificial material layer except at the location where the pattern is provided.
B44C 3/00 - Processes, not specifically provided for elsewhere, for producing ornamental structures
G04B 19/12 - Selection of materials for dials or graduations
30.
Method for structuring an anti-counterfeit marking in an at least partially transparent object and at least partially transparent object comprising an anti-counterfeit marking
A method including obtaining an at least partially transparent object (1), providing a mask (6) defining at least one opening (8) wherein the contour corresponds to a profile of the anti-counterfeit marking to be structured, the mask (6) covering a surface of the at least partially transparent object (1) at the areas not to be structured, structuring the anti-counterfeit marking by bombarding the at least partially transparent object (1) by an ion beam (14) through the at least one opening (8) of the mask (6), the mechanical properties of the mask (6) being sufficient to prevent the ions of the ion beam (14) from etching the surface of the at least partially transparent object (1) at the areas where this surface is covered by the mask (6), removing the mask (6), and placing the at least partially transparent object (1) in a bath (16) at alkaline pH.
C23C 16/513 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using plasma jets
G04D 3/00 - Watchmakers' or watch-repairers' machines or tools for working materials
31.
CERMET AND/OR CERAMIC MULTI-COLOURED ARTICLE AND METHOD FOR MANUFACTURING SAME
A cermet and/or ceramic multi-coloured article, and in particular a bezel (1) of a timepiece, produced by a method for compressing at least two materials (2, 3) of distinct colours, the article including a relief decoration (8) of a different colour from the rest of the article, the decoration (8) being produced by laser ablation on one of the materials (3) after compression of the two materials (2, 3).
G04B 45/00 - Time-pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effect
B44C 1/26 - Inlaying with ornamental structures, e.g. niello work, tarsia work
G04B 19/12 - Selection of materials for dials or graduations
G04B 37/22 - Materials or processes of manufacturing pocket watch or wrist watch cases
B28B 1/00 - Producing shaped articles from the material
B28B 11/08 - Apparatus or processes for treating or working the shaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
B28B 11/24 - Apparatus or processes for treating or working the shaped articles for curing, setting or hardening
B28B 23/00 - Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material
32.
Multicolour cermet and/or ceramic article and manufacturing method thereof
Provided is a multicolour cermet and/or ceramic article, and in particular a bezel of a timepiece, made by a method for injecting at least two materials of distinct colours, said article comprising a relief decoration of a colour different from the rest of the article, said decoration being made by laser ablation after injection of the two materials.
A method for treating a jewel of the monocrystalline or polycrystalline type (20), in particular for the watchmaking industry, the jewel (20) including a body (23) defining the shape thereof. The method includes a step of ion implantation on the surface (24) of at least a part of the body (23) to modify the roughness of the surface (24).
C23C 16/50 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
A method and device for manufacturing a bevelled stone, particularly for a timepiece are disclosed. A precursor is produced from a mixture of at least one material in powder form with a binder. The method includes pressing the precursor so as to form a green body, using a top die and a bottom die comprising a protruding rib, sintering the green body so as to form a body of the future stone in at least one material, the body including a peripheral face and a bottom face provided with a groove, and machining the body including a substep of planning the peripheral face up to the groove, such that an inner wall of the groove forms at least a flared part of the peripheral face of the stone.
B22F 3/16 - Both compacting and sintering in successive or repeated steps
B22F 5/10 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
B28B 3/02 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein a ram exerts pressure on the material in a moulding spaceRam heads of special form
B28D 1/20 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhereMachines, devices, tools therefor by planing, e.g. channeling by means of planing tools
B28D 1/22 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhereMachines, devices, tools therefor by cutting, e.g. incising
C04B 35/105 - Refractories from grain sized mixtures containing chromium oxide or chrome ore
A support frame for a sintering step of a method for producing a part, in particular for watchmaking, from a green body having an initial shape, the body shrinking from the initial shape to a final shape during the sintering step, the support frame having at least one face for supporting the body during the sintering step, wherein the geometry of the supporting face is in relief and configured to support the body from its initial shape into its final shape, so that it retains its shape and proportions in line with a shrinkage coefficient related to the sintering operation. The disclosure further relates to a sintering method using this support frame.
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
A method may produce a ceramic part with a mother-of-pearl effect, in particular for watchmaking. Such methods may include: forming a ceramic body; depositing a layer of an oxy-nitride component of the OxNy type on at least a portion of the ceramic body; and oxidizing at least a portion of the oxy-nitride layer, preferably by heating.
B28B 11/04 - Apparatus or processes for treating or working the shaped articles for coating
B28B 11/00 - Apparatus or processes for treating or working the shaped articles
C04B 41/85 - Coating or impregnating with inorganic materials
C04B 41/91 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
C23C 14/02 - Pretreatment of the material to be coated
C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
G04B 19/18 - Graduations on the crystal or glass, on the bezel, or on the rim
G04D 3/00 - Watchmakers' or watch-repairers' machines or tools for working materials
A method for machining by laser ablation or by micro-milling a raised and/or hollow structure on an impression of an injection mould. A method for manufacturing a ceramic or cermet item by injection using the injection mould to produce an item, and in particular a watch bezel, decorated directly during the injection.
B28B 1/24 - Producing shaped articles from the material by injection moulding
B28B 11/24 - Apparatus or processes for treating or working the shaped articles for curing, setting or hardening
B28B 11/08 - Apparatus or processes for treating or working the shaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
B28B 7/38 - Treating surfaces of moulds, cores, or mandrels to prevent sticking
B22F 3/22 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor for producing castings from a slip
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
B22F 3/24 - After-treatment of workpieces or articles
G04B 19/18 - Graduations on the crystal or glass, on the bezel, or on the rim
G04D 3/00 - Watchmakers' or watch-repairers' machines or tools for working materials
A method for colouring a part to be treated made of metal, this method including the step of implanting mono- or multi-charged ions in a surface layer of the part to be treated by directing towards this part to be treated a mono- or multi-charged ion beam produced by a source of mono- or multi-charged ions, the part to be treated changing colour under the effect of this ion implantation. A coloured metal can be obtained with the above method.
A method for manufacturing a cutting tool (10) with lubrication orifices of complex shapes, including the steps of: producing a polymer insert (20), overmoulding a body of the cutting tool (10) with the polymer insert (20) by injecting into a mould, removing the polymer insert (20), so as to form in the body of the cutting tool (10) lubrication orifices, the shape whereof is complementary with that of a part of the insert (20), machining the body of the cutting tool (10) on an active part thereof, and depositing an abrasive coating on a surface of the active part of the body of the cutting tool (10).
B22F 3/22 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor for producing castings from a slip
B22F 3/24 - After-treatment of workpieces or articles
B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
B23P 15/28 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
B24B 55/02 - Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
A method for manufacturing a stone for a timepiece from a mineral body of a monocrystalline type, the stone including a hole, includes ablating the body by scanning at least one face of the body with ultra-short pulse laser radiation from a laser for a duration less than one hundred picoseconds, and guiding a beam of the laser radiation using a precession system of at least three axes configured to at least partially cancel a conical focusing angle of the laser. The ablating includes digging of a cone of entrance to the hole. A mineral stone of monocrystalline type for a timepiece includes a face provided with a hole formed in a body of the stone, and a functional element at an entrance to the hole. The functional element has a shape of a cone.
B23K 26/382 - Removing material by boring or cutting by boring
B23K 26/0622 - Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
B23K 26/384 - Removing material by boring or cutting by boring of specially shaped holes
B23K 26/388 - Trepanning, i.e. boring by moving the beam spot about an axis
B23K 26/402 - Removing material taking account of the properties of the material involved involving non-metallic material, e.g. isolators
B28D 5/04 - Fine working of gems, jewels, crystals, e.g. of semiconductor materialApparatus therefor by tools other than of rotary type, e.g. reciprocating tools
G04B 31/004 - BearingsPoint suspensions or counter-point suspensionsPivot bearingsSingle parts therefor characterised by the material used
A part (21), in particular a wristlet, including at least two sets (1) of elements (3, 5, 7), in particular links, assembled together. The securing between the elements (3, 5, 7) within a set and between sets is implemented via a gluing (15) rather than by a screwing. Also, a related method of manufacturing the part (21).
An item made from cermet and/or ceramic, and in particular a bezel (1) of a timepiece, produced by a method for injecting at least two materials (2, 3) of distinct compositions, the item including a part (4) where the two materials (2, 3) are superimposed and are interleaved one in the other.
A method for protecting a neodymium-iron-boron watch magnet against corrosion is provided. The method includes a sandblasting treatment of the watch magnet surface following by an ion implantation in an oxygen plasma or a nitrogen plasma to obtain an impervious surface layer with all of the surface bonds saturated by the implanted ions acting as a barrier against oxidation and preventing corrosion of the watch magnet in a humid environment, under the usual conditions for wearing watches.
G04D 3/00 - Watchmakers' or watch-repairers' machines or tools for working materials
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
44.
METHOD FOR MANUFACTURING A PART MADE OF HARD MATERIAL WITH A POLYMER INSERT
The invention relates to a method for manufacturing an ornamental part, for example a timepiece, jewellery or telephone part, in particular a watch crown, the part at least partially comprising a hard material having a Vickers hardness greater than 1000 HV, characterised in that the method comprises the following main steps: - a step of producing a precursor from a mixture of at least one powdered material with a binder, - a step of producing an insert (11) made of polymer material, the insert (11) at least partially having a shape that is the negative of that desired for at least one portion of the part, - a step of overmoulding the precursor on the insert (11) made of polymer material by injection into a mould in order to form a green body (10), and a step of sintering the green body (10) in order to form a body of the future part in this hard material.
The present invention relates to a method for manufacturing a part comprising at least one three-dimensional metallised pattern overlying a local enamel underlayer.
An ornamental part, for example for a timepiece, jewellery or telephone, in particular a watch case middle, and its manufacturing method, the part at least partly including a hard material having a Vickers hardness greater than 1000 HV, the method including the following main steps: a step of producing a precursor from a mixture of at least one powder material with a binder, a step of injecting the precursor into a mould in order to form a green body, a step of sintering the green body in order to form a body of the future part from the hard material, and a step of depositing a polymer material coating on one face of the part, the deposition being carried out by moulding on the body, in particular by injection into a mould, the coating and the hard material being inseparable.
B28B 1/26 - Producing shaped articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mouldMoulds therefor
A44C 27/00 - Making jewellery or other personal adornments
C09D 169/00 - Coating compositions based on polycarbonatesCoating compositions based on derivatives of polycarbonates
G04B 37/22 - Materials or processes of manufacturing pocket watch or wrist watch cases
G04B 39/00 - Watch crystalsFastening or sealing crystalsClock glasses
47.
Method for structuring a decorative of technical pattern in an object made of an at least partially transparent amorphous, semi-crystalline or crystalline material
A method for structuring a decorative or technical pattern in the thickness of an object made of an at least partially transparent amorphous, semi-crystalline or crystalline material, wherein the object is made of an at least partially transparent material including a top surface and a bottom surface which extends away from the top surface. The top or bottom surfaces is provided with a mask defining an opening whose outline corresponds to the profile of the pattern to be structured, the mask covering the top or bottom surface at the positions which are not to be structured. The pattern is structured with a mono- or multicharged ion beam through the opening of the mask, wherein the mechanical properties of the mask are sufficient to prevent the ions of the ion beam from etching the top or bottom surface at the positions where this top or bottom surface is covered by the mask.
A method is for manufacturing a part including a support provided with at least one hollow filled with an aesthetic element forming a decoration on a face of the part intended to be visible. The method includes providing the support provided with the at least one hollow and providing a preform intended to form the aesthetic element of the part, and inlaying by pressing the preform into the at least one hollow of the support. The preform is made of a crystalline aluminium alloy. The inlaying is carried out at a temperature between the solidus temperature and the liquidus temperature of the crystalline aluminium alloy.
A method is for manufacturing a part including a support made of an electrically non-conductive material, the support being provided with at least one recess filled with an aesthetic element made of an electrically conductive material, and the aesthetic element forms a decoration on a side of the part that is intended to be visible. The method includes inlaying by pressing a preform intended to form the aesthetic element into the at least one recess of the support, and treating the surface of the aesthetic element. The at least one recess opens in one or more places onto a side of the part that is intended to be non-visible, to respectively form one or more contact points for carrying current across the aesthetic element during the surface treatment.
A rotating-bezel system intended to be mounted for rotation on a watch-case middle inside which a horological movement is housed, including a ceramic rotating bezel, an annular ring intended to cooperate with an element angularly secured to the middle, and an annular joint for connection between the rotating bezel and the annular ring, the annular ring being placed in the rotating bezel. According to the invention, the system further includes at least one element for locking the annular ring on the rotating bezel, and at least one element being configured to lock any relative rotation between the annular ring and the bezel and to thus angularly secure the assembly formed by the ring and the bezel.
A method for manufacturing a jewel for a timepiece, the jewel including, for example, poly-ruby of the Al2O3Cr type or Zirconia of the ZrO2 type, including first producing a precursor and a then pressing the precursor in order to form a body, the pressing being carried out using a pressing device provided with an upper die and a lower die defining a pressing space wherein the precursor is disposed, the upper die including a concave portion of oblong shape, the device having a wire at least partially traversing the lower die to open into the pressing space, the lower die being able to slide around the wire, the pressing being carried out by bringing the lower die and the upper die closer together to form a body including an upper face provided with a dome and a lower face provided with a hole extending at least partially into the dome.
B28B 3/02 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein a ram exerts pressure on the material in a moulding spaceRam heads of special form
A method for manufacturing a jewel of the polycrystalline type, in particular for a timepiece, the jewel including, for example, poly-ruby of the type al2O3Cr or Zirconia of the type ZrO2, the method including a first step of producing a precursor, and a second step of pressing the precursor in order to form a body, the pressing being carried out using a pressing device provided with an upper die and a lower die defining a pressing space in which the precursor is disposed, the device being provided with a wire passing through at least part of the lower die to open out into the pressing space, the lower die being capable of sliding about the wire, the pressing taking place by bringing the lower die and the upper die closer to one another to form a body comprising a bottom face provided with a hole.
B28B 3/08 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein a ram exerts pressure on the material in a moulding spaceRam heads of special form with two or more rams per mould
B28B 11/08 - Apparatus or processes for treating or working the shaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
B28B 11/12 - Apparatus or processes for treating or working the shaped articles for removing parts of the articles by cutting
B28B 11/24 - Apparatus or processes for treating or working the shaped articles for curing, setting or hardening
A setting or mounting includes a ring carrying elements for setting a decorative element, this setting or mounting being arranged to be placed radially inside a hollow provided in a substrate of an item to be decorated. The setting includes a circular slot arranged to receive a ring-like element made of a shape memory alloy which can undergo a reversible transformation. The ring-like element is able to move from a retracted position in which it rests in the slot, to an open position in which the ring-like element at least partially protrudes from the slot to hold the setting in the substrate.
A dial configured to be mounted in a watch case, includes a plate made of a fragile material, the plate defining a horizontal plane and including at least one housing defining a point of attachment for at least one foot formed of a body and a head arranged to rest inside the at least one housing, the foot includes a circular slot arranged to receive a ring-like element made of a shape memory alloy able to move from a retracted position to an open position in which the foot is mechanically held in the housing.
The invention relates to a spring ring 14 for snap fitting a rotating bezel, the spring ring extending in a plane and being intended to be received in an annular groove arranged on a cylindrical outer rim of a watch case middle part made of ceramic. According to the invention, the spring ring comprises on the inner rim thereof at least one lug inclined in relation to the plane of the spring ring, said lug being intended to engage with a cylindrical outer surface of the watch case middle part, so as to index the position of the spring ring in relation to the middle part.
A method for decorating the surface of a mechanical part including structuring, on the surface to be decorated, a masking layer having a thickness that is at least equal to the thickness of the decoration element to be produced; making, in the masking layer, at least one opening that coincides with the location on the surface to be decorated where the decoration element is to be produced, the opening having a contour that is identical to the contour of the decoration element and defining a volume with the mechanical part; filling the volume delimited by the masking layer and the surface to be decorated of with a filling material wherein the decoration elements are sought to be produced; and removing the masking layer.
B05D 1/32 - Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
B05D 5/06 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
G04B 19/10 - Ornamental shape of the graduations or the surface of the dialAttachment of graduations to the dial
G04B 37/22 - Materials or processes of manufacturing pocket watch or wrist watch cases
57.
STONE, IN PARTICULAR FOR A TIMEPIECE MOVEMENT, AND MANUFACTURING METHOD THEREOF
The invention relates to a method for manufacturing a stone (30), in particular for a timepiece, from a mineral body that is monocrystalline or polycrystalline in nature. The method comprises a step of ablation, in which the body is subjected to material ablation carried out by scanning at least one face of the body using ultra-short pulse laser radiation, the duration of which is less than 100 picoseconds and the beam of which is guided by a precession system having at least three axes and which is configured to at least partially eliminate the angle of the laser cone, which results from the focusing of the laser. The invention further relates to a mineral stone (30) that is monocrystalline or polycrystalline in nature, in particular for a timepiece movement, wherein the stone (30) is obtainable by the method. The stone particularly comprises a face (25) which is provided with a peripheral rim (27), in particular for laterally surrounding an endstone (35) in a bearing.
The invention concerns a method for manufacturing a stone (10), in particular for a timepiece, from a monocrystalline mineral body, the stone (10) comprising a hole (8). The method comprises an ablation step in which the body is subjected to ablation of material by scanning, over at least one surface of the body, ultra-short pulsed laser radiation, the pulse duration of which is less than a hundred picoseconds, and the beam of which is guided by a precession system with at least three axes configured to at least partially cancel out the conical angle of focus of the laser, the laser ablation step comprising the hollowing out of a cone (12) at the entrance of the hole (8). The invention also concerns a monocrystalline mineral stone, in particular for a timepiece, the stone comprising a surface (6) provided with a hole (8) formed in the body of the stone (10) and a functional element at the entrance of the hole (10). The functional element is in the shape of a cone (12).
A method and device for manufacturing a bevelled stone, particularly for a timepiece are disclosed. A precursor is produced from a mixture of at least one material in powder form with a binder. The method includes pressing the precursor so as to form a green body, using a top die and a bottom die comprising a protruding rib, sintering the green body so as to form a body of the future stone in at least one material, the body including a peripheral face and a bottom face provided with a groove, and machining the body including a substep of planning the peripheral face up to the groove, such that an inner wall of the groove forms at least a flared part of the peripheral face of the stone.
B28D 1/22 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhereMachines, devices, tools therefor by cutting, e.g. incising
B22F 3/16 - Both compacting and sintering in successive or repeated steps
B22F 5/10 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
G04D 3/00 - Watchmakers' or watch-repairers' machines or tools for working materials
C04B 35/105 - Refractories from grain sized mixtures containing chromium oxide or chrome ore
B28B 3/02 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein a ram exerts pressure on the material in a moulding spaceRam heads of special form
B28D 1/20 - Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhereMachines, devices, tools therefor by planing, e.g. channeling by means of planing tools
A method for marking a sapphire watch crystal, through the interaction between a laser beam and the sapphire. The beam is focused on a point inside the crystal and the interaction is such that it produces a rectilinear opaque area, which is parallel to the upper surface of the crystal or perpendicular to the surface. The orientation of the opaque area depends on the mode of operation applied. According to the hatching mode of operation, the beam is scanned along one or more linear paths, producing opaque lines inside the crystal, which are parallel to the upper surface. The perforation mode of operation produces distinct opaque areas, obtained by discontinuous operation of the beam on a number of juxtaposed points. According to this latter mode of operation, the opaque areas extend in the direction perpendicular to the upper surface of the crystal.
Method for producing an external horological element (100) which is a heterogeneous component, according to which a primary cavity (10) is produced in a structure (1), only the periphery of this said primary cavity (10) is re-machined or laser machined, which primary cavity (10) is filled with a second material that is different in appearance from the first material in order to produce a primary insert (2), where the bottom of this said primary cavity (10) is left rough before being filled with said second material, and, in the thickness of this primary insert (2), a secondary cavity (20) is produced, which is filled with a third material that is different in appearance from the first material and/or from the second material in order to produce a secondary insert (3).
B29C 39/10 - Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressureApparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
B23K 26/38 - Removing material by boring or cutting
A44C 27/00 - Making jewellery or other personal adornments
G04D 99/00 - Subject matter not provided for in other groups of this subclass
B44C 1/22 - Removing surface-material, e.g. by engraving, by etching
B44C 1/26 - Inlaying with ornamental structures, e.g. niello work, tarsia work
B44C 3/12 - Uniting ornamental elements to structures, e.g. mosaic plates
G04B 45/00 - Time-pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effect
G04B 37/22 - Materials or processes of manufacturing pocket watch or wrist watch cases
A method for brazing a first ceramic component and a second metal alloy component, to make a structural or external timepiece element, a zirconia-based ceramic is chosen for the first component and a titanium alloy for the second component, a first recess is made inside the first component, set back from a first surface in a junction area with a second surface of the second component, braze material is deposited on this first surface and inside each recess, the second surface is positioned in alignment with the first surface to form an assembly, this assembly is heated in a controlled atmosphere to above the melting temperature of the braze material, in order to form the braze in the junction area.
An item includes at least two sets of assembled elements that are connected to each other by a permanent securing device. The permanent securing device includes a pin mounted in a through hole of a central element of a set. This pin is mounted at each end in a blind recess of a side element belonging to another set. At one end, the pin is secured in the blind recess by a locking device, for example by a screw connection. At its other end, it is welded to a socket which is itself secured by a locking device in the blind recess of the side element.
A bracelet having articulated links, including an articulation between a first link and a second link including a tongue that pivots in an opening between side flanges of this first link together forming a double clevis fitting, wherein, in the articulation, the first link or respectively the second link includes at least one external trunnion or respectively at least one internal trunnion arranged to pivot in an internal half-bearing of the second link, or respectively in an external half-bearing of the first link, the second link or respectively the first link includes at least an upper part and a lower part arranged to enclose and conceal therebetween each external trunnion or respectively each internal trunnion.
A44C 5/24 - Fasteners for straps for closed straps with folding devices
65.
METHOD FOR HARDENING AN ANTI-REFLECTION TREATMENT DEPOSITED ON A TRANSPARENT SUBSTRATE AND TRANSPARENT SUBSTRATE COMPRISING A HARDENED ANTI-REFLECTION TREATMENT
The invention concerns a method for hardening an anti-reflection treatment (20) deposited on a transparent substrate, the transparent substrate comprising a top surface (22a) and a bottom surface (22b) that extends at a distance from the top surface (22a), the anti-reflection treatment (20) comprising the step that consists in depositing at least one anti-reflection layer of at least one material on at least one of the top (22a) and bottom (22b) surfaces of the transparent substrate, the hardening method comprising the step that consists in bombarding the at least one top (22a) or bottom (22b) surface on which the at least one anti-reflection layer has been deposited by means of a mono-charged and/or multi-charged ion beam (14) produced by a mono-charged and/or multi-charged electron cyclotron resonance (ECR) ion source (1). The invention also concerns a transparent substrate that has undergone an anti-reflection treatment, at least one of the top (22a) and bottom (22b) surfaces of the transparent substrate being coated with at least one anti-reflection layer of at least one material, ions being implanted in the at least one anti-reflection layer.
A method for assembling at least a first element and a second element to form, once assembled, an external component for a portable device, including the steps of: a) making the first element; b) making the second element; c) arranging at least a first groove in the first element and at least a second groove in the second element; d) placing and holding the first and second element end-to-end with at least a third connecting element which is inserted and locked in the first and second grooves.
The machining tool is used for grinding a workpiece in a machine tool. The tool includes at least a first machining portion having particles of a harder material than the material of the workpiece to be machined, the particles being arranged in a binder, and at least a second machining portion having particles of smaller diameter than the first machining portion, and of a harder material than the material of the workpiece to be machined, the particles of the second portion being arranged in an identical binder to that of the first portion or in a different binder.
The invention relates to a method for producing a part (1) comprising a support (2) made of a non-electroconductive material, said support (2) being provided with at least one cavity (4) filled with an aesthetic element (3) made of an electroconductive material, said aesthetic element (3) forming a decoration on a face (2a) of the part (1), which is intended to be visible, the method comprising: a step of inlaying by pressing a preform intended to form the aesthetic element (3) into said at least one cavity (4) of the support (2); and a step of electrochemical surface treatment of the aesthetic element (3), said at least one cavity (4) leading to at least one area on a face (2b) of the part (1), which is intended not to be visible, in order to respectively form at least one contact point (4b) allowing the application of current during the surface treatment on the aesthetic element (3).
The invention relates to a method for producing a part (1) comprising a support (2) provided with at least one cavity (4) filled with an aesthetic element (3) forming a decoration on a face (2a) of the part (1), which is intended to be visible, said method comprising the steps of: providing the support (2) comprising said at least one cavity (4) and providing a preform intended to form the aesthetic element (3) of the part (1); and inlaying by hot-pressing the preform into said at least one cavity (4) of the support (2), the method being characterised in that the preform is made of a crystalline aluminium alloy, the inlaying step being carried out at a temperature between the Solidus temperature and the Liquidus temperature of the crystalline aluminium alloy. The invention also relates to the part (1) produced by the method.
A binder for an injection moulding composition including: from 40 to 55 volume percent of a polymeric base, from 35 to 45 volume percent of a mixture of waxes or a mixture of wax and palm oil, and at least 5 volume percent of at least one surfactant, wherein the polymeric base is formed of copolymers of ethylene and methacrylic or acrylic acid, copolymers of ethylene and propylene and/or maleic anhydride-grafted polypropylene, and polymers soluble in isopropyl alcohol, propyl alcohol and/or turpentine, and chosen from the group including a cellulose acetate butyrate, a polyvinyl butyral and a copolyamide, the respective quantities of the binder components being such that their sum is equal to 100 volume percent of the binder.
B22F 1/103 - Metallic powder containing lubricating or binding agentsMetallic powder containing organic material containing an organic binding agent comprising a mixture of, or obtained by reaction of, two or more components other than a solvent or a lubricating agent
B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
B22F 1/10 - Metallic powder containing lubricating or binding agentsMetallic powder containing organic material
71.
Method for structuring a decorative of technical pattern in an object made of an at least partially transparent amorphous, semi-crystalline or crystalline material
A method for structuring a decorative or technical pattern in the thickness of an object made of an at least partially transparent amorphous, semi-crystalline or crystalline material, wherein the object is made of an at least partially transparent material including a top surface and a bottom surface which extends away from the top surface. The top or bottom surfaces is provided with a mask defining an opening whose outline corresponds to the profile of the pattern to be structured, the mask covering the top or bottom surface at the positions which are not to be structured. The pattern is structured with a mono- or multicharged ion beam through the opening of the mask, wherein the mechanical properties of the mask are sufficient to prevent the ions of the ion beam from etching the top or bottom surface at the positions where this top or bottom surface is covered by the mask.
A bearing includes a shaft which pivots in the bearing. The shaft includes, at at least one end thereof, a shoulder via which the shaft is in contact with an opposite surface of the bearing. The shoulder is extended by a pivot engaged in a hole provided in the bearing. The opposite surface of contact of the bearing includes at least one hollow in order to reduce the surface of contact between the shoulder of the shaft and the bearing. Application is made to the production of a bearing for a shaft of a horology movement.
F16C 17/08 - Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
A method for manufacturing a hole jewel, including forming a precursor from a mixture of at least one powder material with a binder; pressing the precursor, with upper lower dies, to form a green body of the future hole jewel including a blind cavity having a height between a height of the green body and a height of the future hole jewel, the cavity being provided with upper and lower portions respectively including blanks of a through hole and of a functional element of the future hole jewel; sintering the green body to form a body of the future hole jewel; machining the body, including a first sub-step of shaping a top of the body, during which a height of the upper portion is configured in readiness for an opening in the through hole blank for connecting the functional element to the upper surface, and a second sub-step of shaping a base of the body to form a lower surface of the hole jewel for connecting the functional element to to the lower surface.
Method for cutting crystal boules using diamond wire, wherein this boule is driven about a main axis, a cutting wire is held taut and driven through a temporary drum immobilising each boule in position with respect to the main axis throughout the entire cutting operation, this temporary drum being made by overmoulding a coating material on at least one boule bonded onto a sacrificial core, the cutting being followed by the slicing of cut rings from which are detached, particularly using heat, crystalline plates with parallel faces.
B28D 5/04 - Fine working of gems, jewels, crystals, e.g. of semiconductor materialApparatus therefor by tools other than of rotary type, e.g. reciprocating tools
B28D 5/00 - Fine working of gems, jewels, crystals, e.g. of semiconductor materialApparatus therefor
B23B 27/16 - Cutting tools of which the bits or tips are of special material with exchangeable cutting bits, e.g. able to be clamped
A binder for an injection moulding composition includes: from 35 to 54% by volume of a polymeric base, from 40 to 55% by volume of a mixture of waxes, and approximately 10% by volume of a surfactant, wherein the polymeric base contains copolymers of ethylene and methacrylic or acrylic acid, or copolymers of ethylene and vinyl acetate, or copolymers of ethylene including maleic anhydride or a mixture of these copolymers, as well as polyethylene, polypropylene and acrylic resin.
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
C04B 35/56 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides
C04B 35/584 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on silicon nitride
B22F 3/22 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor for producing castings from a slip
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
C04B 111/00 - Function, property or use of the mortars, concrete or artificial stone
The invention relates to a bearing in which a shaft (30) pivots, the shaft (30) comprising, at least at one end, a bearing surface (31a, 31b) via which the shaft (30) is in contact with a facing surface (12) of the bearing (10a, 10b), the bearing surface (31a, 31b) being extended by a pivot (32a, 32b) engaged in a hole (11) formed in the bearing (10a, 10b), the bearing (10a, 10b) being characterized in that the facing contact surface (12) of the bearing (10a, 10b) comprises at least one recess (14) so as to reduce the area of contact between the bearing surface (31a, 31b) of the shaft (30) and the bearing (10a, 10 10b). Application to the creation of a bearing for a clock movement shaft.
Binder for injection molding composition comprising: - from 45% to 50% by volume of a polymer base, - at least 34% by volume of a mixture of waxes or a mixture of wax and palm oil, - and from 11% to 16% by volume of a surfactant, wherein the polymer base contains copolymers of ethylene and methacrylic or acrylic acid, or copolymers of ethylene comprising a maleic anhydride or a mixture of these copolymers, and also polyethylene, polypropylene and an acrylic resin, the respective amounts of the components of the binder being such that, added together, they do not exceed 100% by volume.
B22F 3/22 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor for producing castings from a slip
G04D 3/00 - Watchmakers' or watch-repairers' machines or tools for working materials
G04B 37/22 - Materials or processes of manufacturing pocket watch or wrist watch cases
78.
Mixer, method of mixing raw material for powder metallurgy binder for injection moulding composition
A mixer for ceramic feedstock pellets includes a tank, a mixing device within the tank, and a heat exchanger including a cooler for cooling of the content of this tank. A controller controls the heat exchanger which includes a heater arranged to heat the content of this tank to a temperature comprised between a lower temperature (TINF) and a higher temperature (TSUP) stored in a memory for a specific mixture. The heater exchanges energy with a heat exchanger and mixing temperature maintenance circuit, external to this tank. The thermal inertia of this circuit is higher than that of this fully loaded tank.
B28C 5/00 - Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
B28C 5/16 - Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials the stirrers having motion about a vertical or steeply inclined axis
B01F 7/00 - Mixers with rotary stirring devices in fixed receptacles; Kneaders
B01F 7/18 - Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a vertical axis with paddles or arms
B01F 3/12 - Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed liquids with solids
B01F 3/14 - Mixing very viscous liquids with solids
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
C04B 35/56 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides
C04B 35/584 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on silicon nitride
C04B 35/626 - Preparing or treating the powders individually or as batches
B28C 5/46 - Arrangements for applying super- or sub-atmospheric pressure during mixingArrangements for cooling or heating during mixing
B28C 7/02 - Controlling the operation of the mixing
B01F 7/20 - Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a vertical axis with paddles or arms with fixed axis
B28B 3/22 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein the material is extruded by screw or worm
79.
Process for the production of a zirconia-based, coloured, in particular grey, article and a zirconia-based coloured decorative article obtained using this process
2); making a second mixture including the first mixture and a binder; making a granulated mixture by conducting a granulation of the second mixture; forming a blank by giving this second granulated mixture the shape of the desired article; sintering the blank in air for at least thirty minutes at a temperature in the range of between 1250° and 1550° C.
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
wherein the polymeric base contains copolymers of ethylene and methacrylic or acrylic acid, or copolymers of ethylene and vinyl acetate, or copolymers of ethylene including maleic anhydride or a mixture of these copolymers, as well as polyethylene, polypropylene and acrylic resin.
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
C04B 35/56 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides
C04B 35/584 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on silicon nitride
B22F 3/22 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor for producing castings from a slip
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
C04B 111/00 - Function, property or use of the mortars, concrete or artificial stone
Method for fabricating a coloured, zirconia-based article; in particular an orange coloured article; and a coloured, zirconia-based article obtained according to the method
The invention concerns a method for fabricating an orange, zirconia-based article, characterized in that it includes the series of steps consisting in creating a first mixture comprising a zirconia powder, 3 to 20% by weight of at least one stabilizer chosen from the group of oxides comprising yttrium oxide, magnesium oxide, and calcium oxide, alone or in combination, 0.1% to 5% by weight of at least one element intended to form a vitreous phase, and chosen from the group comprising silicon oxide, aluminum oxide, lithium oxide and yttrium oxide, alone or in combination, 1% to 6% by weight of a cerium oxide powder; creating a second mixture including said first mixture and a binder; creating a granulated mixture by granulating said second mixture; forming a green body by giving said second granulated mixture the shape of the desired article; air sintering for at least thirty minutes at a temperature comprised between 1,250 and 1,500° C. and annealing the desired article at a temperature comprised between 700° C. and 1,350° C. for a period comprised between 30 minutes and 20 hours in a reducing atmosphere, and polishing said sintered green body.
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
C04B 35/626 - Preparing or treating the powders individually or as batches
C04B 35/63 - Preparing or treating the powders individually or as batches using additives specially adapted for forming the products
The invention relates to a binder for an injection-moulding composition, comprising: between 35 and 54% vol. of a polymer base; between 40 and 55% vol. of a mixture of waxes; and approximately 10% vol. of a surfactant, wherein the polymer base contains copolymers of ethylene and methacrylic or acrylic acid, or copolymers of ethylene and vinyl acetate, or copolymers of ethylene comprising a maleic anhydride, or a mixture of said copolymers, in addition to polyethylene, polypropylene and an acrylic resin.
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
C04B 35/56 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides
B22F 3/22 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor for producing castings from a slip
C04B 35/584 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on silicon nitride
The invention relates to an assembly system including first and second parts each including a blind recess and at least one third part including a through hole. According to the invention, the assembly system further includes a permanent securing device including a pin mounted in the through hole of the at least one third part, the pin including, at a first end, a first means of locking one of the first and second parts in its blind recess, and a socket whose external wall includes a second means of locking the other of the first and second parts in its blind recess, and whose internal wall is welded to the second end of the pin in order to join the first, second and at least one third parts to each other with no plastic deformation of the first and second parts.
A mixer for ceramic feedstock pellets with a tank, a mixing shaft, and a heat exchanger including a cooler for the cooling of the content of this tank is provided. A controller controls the heat exchanger which includes a heater arranged to heat the content of this tank to a temperature comprised between a lower temperature (TINF) and a higher temperature (TSUP) stored in a memory for a specific mixture, and the heater exchanges energy with a heat exchange and mixing temperature maintenance circuit, external to this tank, and wherein the thermal inertia of this circuit is higher than that of this fully loaded tank. The invention also concerns a method for mixing raw material for powder metallurgy, implementing a specific injection molding composition and a specific binder.
B28C 5/16 - Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials the stirrers having motion about a vertical or steeply inclined axis
B01F 7/00 - Mixers with rotary stirring devices in fixed receptacles; Kneaders
B01F 3/12 - Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed liquids with solids
B01F 3/14 - Mixing very viscous liquids with solids
C04B 35/10 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on aluminium oxide
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
C04B 35/56 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides
C04B 35/584 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on silicon nitride
C04B 35/626 - Preparing or treating the powders individually or as batches
B28C 5/46 - Arrangements for applying super- or sub-atmospheric pressure during mixingArrangements for cooling or heating during mixing
B28C 7/02 - Controlling the operation of the mixing
B01F 7/20 - Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a vertical axis with paddles or arms with fixed axis
B28B 3/22 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein the material is extruded by screw or worm
85.
METHOD FOR FABRICATING A COLOURED, ZIRCONIA-BASED ARTICLE; IN PARTICULAR AN ORANGE COLOURED ARTICLE; AND A COLOURED, ZIRCONIA-BASED ARTICLE OBTAINED ACCORDING TO THE METHOD
The invention concerns a method for producing an orange item made from zirconia characterised by the fact that it comprises the successive steps consisting of producing a first mixture comprising zirconia powder, 3 to 20% by weight of at least one stabiliser chosen from the group of oxides comprising yttrium oxide, magnesium oxide, and calcium oxide alone or in combination, 0.1% to 5% by weight of at least one element intended to produce a vitreous phase, and chosen from the group comprising silicon oxide, aluminium oxide, lithium oxide and yttrium oxide alone or in combination, 1% to 6% by weight of a cerium oxide powder; producing a second mixture comprising said first mixture and a binder; producing a granulated mixture by granulating said second mixture; forming a blank by giving this granulated second mixture the shape of the desired item; sintering in air for at least thirty minutes at a temperature of between 1,250 and 1,500 degrees C, and annealing the desired item at a temperature of between 700 degrees C and 1,350 degrees C for a period of between 30 minutes and 20 hours in a reducing atmosphere, and polishing said sintered blank.
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
86.
METHOD FOR PRODUCING A COLOURED ITEM, IN PARTICULAR ORANGE, MADE FROM ZIRCONIA, AND COLOURED DECORATIVE ITEM MADE FROM ZIRCONIA OBTAINED ACCORDING TO THIS METHOD
The invention concerns a method for producing an orange item made from zirconia characterised by the fact that it comprises the successive steps consisting of producing a first mixture comprising zirconia powder, 3 to 20% by weight of at least one stabiliser chosen from the group of oxides comprising yttrium oxide, magnesium oxide, and calcium oxide alone or in combination, 0.1% to 5% by weight of at least one element intended to produce a vitreous phase, and chosen from the group comprising silicon oxide, aluminium oxide, lithium oxide and yttrium oxide alone or in combination, 1% to 6% by weight of a cerium oxide powder; producing a second mixture comprising said first mixture and a binder; producing a granulated mixture by granulating said second mixture; forming a blank by giving this granulated second mixture the shape of the desired item; sintering in air for at least thirty minutes at a temperature of between 1,250 and 1,500 degrees C, and annealing the desired item at a temperature of between 700 degrees C and 1,350 degrees C for a period of between 30 minutes and 20 hours in a reducing atmosphere, and polishing said sintered blank.
C04B 35/48 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
87.
Bearing including first and second functional elements on two distinct faces
The invention relates to a bearing comprising a sintered ceramic body traversed by a hole. According to the invention, the body includes a top surface and a bottom surface each of which includes a functional element communicating with said hole.
B28B 3/02 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein a ram exerts pressure on the material in a moulding spaceRam heads of special form
A system of polishing a concave surface of an external piece for a timepiece, including a securing device including a support that carries the piece, and a grinding device including an abrasive mechanism rotatably mounted along a first axis and configured to polish the piece along a first curvature. The securing device further includes a moving mechanism of the support so that the support imparts a back-and-forth motion along a second axis and a contact surface of the abrasive mechanism is curved to polish the piece along a second curvature in addition to the first curvature. The system can be applied to the field of crystals for a timepiece.
B24B 13/02 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
B24B 13/04 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses involving grinding wheels controlled by gearing
B24B 29/00 - Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
B24B 47/02 - Drives or gearings for grinding machines or devicesEquipment therefor for performing a reciprocating movement of carriages or work-tables
G04D 3/06 - Devices for shaping or setting watch glasses
B24B 47/04 - Drives or gearings for grinding machines or devicesEquipment therefor for performing a reciprocating movement of carriages or work-tables by mechanical gearing only
89.
External piece for a timepiece and system of manufacturing the same
An external piece for a time piece and a method of manufacturing the same, including a top surface and a bottom surface. At least one of the faces includes a longitudinal curvature and a transverse curvature that are different.
G04B 39/00 - Watch crystalsFastening or sealing crystalsClock glasses
G04D 3/06 - Devices for shaping or setting watch glasses
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
B24B 41/06 - Work supports, e.g. adjustable steadies
B24B 13/06 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes
90.
System of finishing a part formed of several materials
A system of finishing a part includes at least two materials of different hardness, the system including at least one accommodating device, used as a container for an abrasive element and a support device including a structure to secure the part. The system further includes a mechanism to move the part closer against the abrasive element and a mechanism to move the part relative to the accommodating device along satin finish lines. The part, in one example, is a part of a timepiece.
B24B 31/116 - Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work or the abrasive material is looseAccessories therefor involving other means for tumbling of work using plastically deformable grinding compound, moved relatively to the workpiece under the influence of pressure
B24B 31/06 - Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work or the abrasive material is looseAccessories therefor involving oscillating or vibrating containers
B24B 31/00 - Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work or the abrasive material is looseAccessories therefor
B24B 31/12 - AccessoriesProtective equipment or safety devicesInstallations for exhaustion of dust or for sound absorption specially adapted for machines covered by group
B24B 41/00 - Component parts of grinding machines or devices, such as frames, beds, carriages or headstocks
The invention relates to a member (1) comprising a ceramic element (3) intended to be fitted against a body (5). According to the invention, the member includes a cooperation device (7) comprising a deformable insert (2) for locking the fit between the ceramic element (3) and the body (5), and a means of adherence (13) between the insert (2) and the ceramic element (3), in order to decrease the relative movement between said ceramic element (3) and said insert (2).
The invention concerns the field of external elements for timepieces.
b) sand blasting (7) portions of the ceramic part to make them matt;
c) lapping (9) the matt portions in order to level out the surface of the matt portions.
The invention concerns the field of timepieces.
B28B 11/08 - Apparatus or processes for treating or working the shaped articles for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads
C04B 41/00 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone
C04B 41/53 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone involving the removal of part of the materials of the treated article
C04B 41/91 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
G04B 37/22 - Materials or processes of manufacturing pocket watch or wrist watch cases
A system for machining a bevel on a disk shaped part including a grinding device having an abrasive, a device for securing the part including a support to which the part is fitted and which is integral with an axis of rotation. The securing device further includes a system for orienting the axis of rotation to define the angle of the bevel and a system for moving the support closer to the abrasive in order to machining the part under stress. The invention concerns the field of crystals for timepieces.
B24B 9/00 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor
B24B 9/08 - Machines or devices designed for grinding edges or bevels on work or for removing burrsAccessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
B24B 21/00 - Machines or devices using grinding or polishing beltsAccessories therefor
G04D 3/06 - Devices for shaping or setting watch glasses
94.
PIECE OF CASING FOR A TIME PIECE AND SYSTEM FOR MANUFACTURING SAME
The invention relates to a piece of casing (3, 23, 43, 63, 83, 103) comprising an upper surface (82, 102) and a lower surface (84, 104). According to the invention, at least one of the faces (82, 84, 102, 104) has a longitudinal curvature (C2, C4) and a transverse curvature (C1, C3) which are different. The invention relates to the field of pieces of casing for a time piece.
B24B 13/04 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses involving grinding wheels controlled by gearing
B24B 13/06 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes
C03B 33/04 - Cutting or splitting in curves, especially for making spectacle lenses
G04D 3/06 - Devices for shaping or setting watch glasses
95.
SYSTEM FOR POLISHING AN EXTERIOR PART FOR A TIMEPIECE
The invention relates to a system (21) for polishing a concave surface of an exterior part (3) for a timepiece, comprising an immobilizing device (25) including a support (31) for holding said part, and a grinding device (27) comprising abrasive means (33) rotatably mounted about a first axis (A3) and intended for polishing said part along a first curvature (C1). According to the invention, the immobilizing device (25) further comprises a means (35) for moving the support (31), such that the support (31) carries out a reciprocating movement (B) along a second axis, and the contact surface of the abrasive means (33) is curved so as to polish said part along a second curvature (C2) in addition to the first curvature. The invention relates to the field of crystals for timepieces.
B24B 13/04 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses involving grinding wheels controlled by gearing
B24B 29/00 - Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
B24B 47/02 - Drives or gearings for grinding machines or devicesEquipment therefor for performing a reciprocating movement of carriages or work-tables
B24B 47/04 - Drives or gearings for grinding machines or devicesEquipment therefor for performing a reciprocating movement of carriages or work-tables by mechanical gearing only
G04D 3/06 - Devices for shaping or setting watch glasses
Housing insert for a spacer of a ceramic link for a bracelet, including a housing for receiving a spacer having one end. It includes an external machined portion arranged to cooperate with this housing and an internal machined portion including a substantially cylindrical bearing area, arranged to closely receive this end and having a smaller diameter than that of this end. An equipped link includes such a link and such an insert of this type fixed in this housing. A bracelet including includes a plurality of equipped lateral links into which removably mounted spacers are driven. This bracelet includes intermediate links assembled to pivot freely relative to these spacers or relative to pins pivotably mounted in these equipped links.
The invention proposes a method of locally colouring a part made of ceramic material of the metallic oxide type mainly including the following steps of taking a support for the part and a laser, able to move relative to each other in an XY plane, performing a plasma treatment of the part using a gas containing one element selected from among nitrogen an carbon, so as to convert a surface layer of metallic oxide, into a substantially stoichiometric ceramic chosen from among metal nitrides and carloides, locally illuminating the part with the laser beam so as to provide sufficient energy to cause a local change in colour by altering the stoichiometry of the surface layer, and scanning the surface of the part using the laser beam so as to form a determined pattern.
B23K 26/14 - Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beamNozzles therefor
B23K 26/08 - Devices involving relative movement between laser beam and workpiece
C04B 35/565 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbides based on silicon carbide
patents
