Abstract

A tire comprising at least a rubber composition based on at least a blend of natural rubber, NR, or synthetic polyisoprene, and a styrene-butadiene copolymer, SBR, the SBR having a content greater than or equal to 20 parts per hundred parts of elastomer, phr, a reinforcing filler comprising carbon black, characterized in that the composition comprises a plasticizing resin having a glass transition temperature, Tg, greater than or equal to 20° C. and that the SBR has a Tg greater than or equal to −65° C.

IPC Classes  ?

• C08L 9/06 - Copolymers with styrene
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08L 7/00 - Compositions of natural rubber
• C08K 5/00 - Use of organic ingredients

Abstract

The disclosure is related to a tread for a tire, this tread having a tread surface intended to come into contact with a roadway and comprising at least one groove of width W and depth P delimited by two facing lateral walls, these lateral walls being connected together by a groove bottom. At least one groove has a plurality of closing devices for reducing the running resonance noise generated by this groove, each closing device comprising at least two sets of flexible blades, a first set is connected to the bottom of the groove and is intended to flex around a first axis, and at least one second set connected to a lateral wall delimiting the groove, this second set being intended to flex around a second axis, this second axis being different than the first axis.

IPC Classes  ?

• B60C 11/13 - Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
• B60C 11/04 - Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag

Abstract

The tire has a load index that is at least 118 and two layers of reinforcing elements. Each of the layers has a breaking force per unit width that is higher than 2900 daN/dm. A minimum strength per unit width, measured for an elongation of less than 10%, of the second layer is greater than 20% of the minimum strength per unit width, measured for an elongation of less than 10%, of the first layer. The reinforcing elements of the first layer have a thread count that is higher than 300 tex. The reinforcing elements of the two layers have a thread count of less than 750 tex. The elongation of the reinforcing elements of the second layer are greater than 8% under a force of 20 daN and the secant elastic modulus values under tension at 10% elongation, Mt, Mj, satisfy the relationship Mt/Mj≥1.

IPC Classes  ?

• B60C 9/04 - Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
• B60C 15/06 - Flipper strips, fillers, or chafing strips
• B60C 9/02 - Carcasses
• B60C 15/00 - Tyre beads, e.g. ply turn-up or overlap
• B60C 15/04 - Bead cores

Abstract

Tire with radial carcass reinforcement having a tread of thickness E, this tread having a tread surface and at least one cut opening onto the tread surface to form edge corners. The cut extends into the tread over a total depth H. The cut is in the form of a sipe having a width D. There is also formed, in the vicinity, i.e. at a minimum distance from the said edge corner that is at most equal to five times the width D of the cut, of at least one edge corner of this cut and on the tread surface, at least one cavity having a depth h that is small in comparison with the depth of the cut, i.e. that is at most equal to 30% of the depth H. The at least one cavity reduces the compression rigidity of the tread in the vicinity of the the at least one edge corner.

IPC Classes  ?

• B60C 11/12 - Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
• B60C 11/03 - Tread patterns
• B60C 11/04 - Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
• B60C 11/11 - Tread patterns in which the raised area of the pattern consists only of isolated elements, e.g. blocks
• B60C 11/13 - Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping

Abstract

The invention relates to a process for the synthesis of a polymer bearing one or more pendant hydroxyaryl groups, comprising the reaction of a polymer bearing at least one epoxide functional group with a nucleophilic compound simultaneously bearing the hydroxyaryl group and a nucleophilic functional group selected from the group consisting of the phosphonic acid functional group and its ionic form.

IPC Classes  ?

• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08F 36/04 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
• C08L 19/00 - Compositions of rubbers not provided for in groups
• C08L 53/02 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
• C08F 36/14 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated containing elements other than carbon and hydrogen
• C08F 36/20 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds unconjugated
• C08F 30/02 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus
• C08C 19/06 - Epoxidation
• C08F 136/08 - Isoprene
• C08C 19/24 - Incorporating phosphorus atoms into the molecule
• C08C 19/40 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with oxygen or oxygen-containing groups with epoxy radicals
• C08F 36/06 - Butadiene
• C08F 36/08 - Isoprene

Abstract

A method for retreading a tire casing is disclosed herein. The method includes a tread is disposed on a casing carcass with a bonding layer being interposed in between, and a strip is tensioned through several circuits on the tread. Also disclosed herein is a tire employing the a method of retreading disclosed herein.

IPC Classes  ?

• B29D 30/54 - Retreading

Abstract

An aerodynamic system for a truck (12) is provided that has a faring (14) carried by the truck with an outer surface (24) that is an air flow surface across which air flows when the truck is moving forward. The faring has a tailing end with a first kick out (22) that has a first kick out exit surface (24) oriented at a first angle with respect to the air flow surface. The tailing end has a second kick out (28) with a second kick out exit surface (30) oriented at a second angle with respect to the air flow surface. The first angle is different than the second angle. The truck has a longitudinal axis, a longitudinal direction and a vertical direction. The air flow surface is located forward from the tailing end in the longitudinal direction, and the first kick out is located higher than the second kick out in the vertical direction.

IPC Classes  ?

• B62D 35/00 - Vehicle bodies characterised by streamlining

Abstract

A method of mounting a non-pneumatic tire (102) onto a hub (300) to provide a non-pneumatic wheel (100). Certain portions of spokes (106) of the non-pneumatic tire (102) are connected to grooves (318) along the hub (300). The tire (102) is repeatedly rotated and deformed to allow the remaining portions of the spokes (106) to be connected with the grooves (318) in order to fully mount the non- pneumatic tire (102) onto the hub (300).

IPC Classes  ?

• B60B 1/04 - Attaching spokes to rim or hub
• B60C 7/18 - Non-inflatable or solid tyres characterised by means for increasing resiliency using springs of helical or flat coil form disposed radially relative to wheel axis
• B60C 7/10 - Non-inflatable or solid tyres characterised by means for increasing resiliency
• B60C 7/14 - Non-inflatable or solid tyres characterised by means for increasing resiliency using springs
• B60B 21/06 - Rims characterised by means for attaching spokes
• B60B 9/04 - Wheels of high resiliency using springs in leaf form
• B60B 9/26 - Wheels of high resiliency comprising resilient spokes

Abstract

A non-pneumatic wheel (100) including a hub (300) and a non- pneumatic tire (102), as well as a method for mounting the non- pneumatic tire (102) onto the hub (300). The hub (300) is formed, with grooves (318) that receive the radially-inner ends (110) of spokes (106) of the non-pneumatic tire (102). To secure the tire (102) onto the hub (300) during assembly, the grooves (318) with the radially inner ends (110) of the spokes (106) received therein are pulled radially inward to decrease the diameter of the hub (300) and increase tension in the spokes (106).

IPC Classes  ?

• B60B 1/04 - Attaching spokes to rim or hub
• B60C 7/24 - Non-inflatable or solid tyres characterised by means for securing tyres on rim or wheel body

Abstract

A hub (300) for a non-pneumatic wheel (102) and the non-pneumatic wheel (102) incorporating such hub (300). The hub (300) includes an annular receiver (302) with a plurality of projections (312) and grooves (318) arranged in an alternating manner along the circumferential direction of the hub (300). The grooves (318) are configured to receive tension-transmitting elements or spokes (106) of the non-pneumatic wheel (102). The annular receiver (302) may be manufactured from a single sheet of metal that is folded and welded to create the projections (312) and grooves (318).

IPC Classes  ?

• B60B 1/04 - Attaching spokes to rim or hub
• B60C 7/24 - Non-inflatable or solid tyres characterised by means for securing tyres on rim or wheel body

Abstract

The tire tread having a tread surface and a total thickness E and at least one main groove which opens when new onto a tread surface. In the vicinity of this main groove, at least one discontinuous secondary groove has a plurality of hidden parts and a plurality of open parts. The open parts are open onto the tread surface when new. The main groove and the discontinuous secondary groove have roughly identical main directions. The mean distance L1, which is a distance measured at the open parts between the mean surface of the main groove and the mean surface of the discontinuous groove, is less than the mean distance L2 measured between the mean surface of the main groove and the mean surface of the discontinuous groove in the regions of the discontinuous groove that do not have open parts.

IPC Classes  ?

• B60C 11/03 - Tread patterns

Abstract

An apparatus for a vehicle is provided that includes a spindle sleeve with a spindle sleeve inner surface axis. The spindle sleeve has a spindle sleeve outer surface axis that is not coaxial with the spindle sleeve inner surface axis. A hub with a hub axis coaxial with the spindle sleeve outer surface axis is also present. Also included are first and second bearings within the hub, and a containment seal that engages the hub and the spindle sleeve. A sleeve washer is included, and the containment seal is located between the first bearing and the sleeve washer in an axial direction of the hub.

IPC Classes  ?

• B60B 27/00 - Hubs
• B62D 17/00 - Means on vehicle for adjusting camber, castor, or toe-in

Abstract

An elastomeric laminate is provided. The elastomeric laminate comprises a layer A consisting of a diene rubber composition, a layer B comprising a highly unsaturated diene elastomer B, n layers Ci arranged between the layer A and the layer B, n being an integer ≥2, i being an integer ranging from 1 to n, the layer C1 being arranged between the layer A and the layer C2, the layer Cn being arranged between the layer B and the layer Cn−1, the layer Ci being arranged between the layer Ci−1 and the layer Ci+1 for values of i ranging from 2 to n−1 when n>2. Such a laminate has good resistance to separation of the layers which constitute it.

IPC Classes  ?

• B32B 25/00 - Layered products essentially comprising natural or synthetic rubber
• B32B 25/08 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resin
• B32B 25/16 - Layered products essentially comprising natural or synthetic rubber comprising polydienes or poly-halodienes
• B32B 7/12 - Interconnection of layers using interposed adhesives or interposed materials with bonding properties
• B32B 25/14 - Layered products essentially comprising natural or synthetic rubber comprising copolymers in which synthetic rubber constituents predominate
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition

Abstract

A process for the production of butadiene from an ethanol feed having at least 80% by weight of ethanol, A) converting ethanol into acetaldehyde B) converting an ethanol/acetaldehyde mixture into butadiene, C1) hydrogen treatment, D1) butadiene extraction, a first butadiene purification D2), a subsequent butadiene purification D3), an effluent treatment E1), E2) eliminating impurities and brown oils and F) scrubbing with water.

IPC Classes  ?

• C07C 1/207 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms from carbonyl compounds
• C07C 1/20 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms
• C07C 7/11 - Purification, separation or stabilisation of hydrocarbonsUse of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids
• C07C 7/00 - Purification, separation or stabilisation of hydrocarbonsUse of additives
• C07C 45/00 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds

Abstract

The invention concerns a process for the production of butadiene from an ethanol feed comprising at least 80% by weight of ethanol, comprising a step for conversion of ethanol to acetaldehyde, a step for the extraction of butadiene, a step for scrubbing gaseous by-products with water, a step for eliminating impurities and brown oils, a step for treating effluents, a first butadiene purification step, and a subsequent butadiene purification step, said ethanol feed being supplied to said butadiene extraction step, the arrangement of the steps and recycles allowing the recycles to be maximized and allowing the water and energy consumption to be minimized.

IPC Classes  ?

• C07C 1/20 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms
• C07C 2/40 - Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition between unsaturated hydrocarbons by oligomerisation of well-defined unsaturated hydrocarbons without ring formation of dienes or alkynes of conjugated dienes
• B01D 11/04 - Solvent extraction of solutions which are liquid
• B01D 3/14 - Fractional distillation
• C07C 2/86 - Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by condensation between a hydrocarbon and a non-hydrocarbon
• F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes

Abstract

p being an integer from 0 to 50.

IPC Classes  ?

• C07F 7/08 - Compounds having one or more C—Si linkages
• C08F 10/02 - Ethene

Abstract

The tire vulcanizing mould includes a plurality of segments for molding the outside of the tire tread. The segments are able to move radially between a position in which the mold is open and a position in which the mold is closed. The segments have frustoconical bearing surfaces that are placed radially on the outside. An axially mobile external ring, which acts on the frustoconical bearing surfaces, is placed radially on the outside of the segments in order to cause them to close and to move back from their position of closure in the mold. The external ring is radially preloaded towards the inside when the mold is in the open position.

IPC Classes  ?

• B29D 30/06 - Pneumatic tyres or parts thereof

Abstract

The tread has a total width W and two main grooves. The main grooves divide the tread into a middle region and edge regions. The middle region has an axial width Lm that is 45% to 70% of the total width W. The volume void ratio of the tread when new is less than 17%. An internal surface extends parallel to the tread surface when new and is in contact radially with the innermost points of the deepest main grooves. The middle part has a plurality of transverse sipes, each of which has a depth at least equal to the depth of the main grooves. The transverse sipes open into the main grooves. The middle region has a volume void ratio when new that is less than half the total volume void ratio of the tread, and at least one circumferential channel appears when the tread becomes part worn.

IPC Classes  ?

• B60C 11/03 - Tread patterns
• B60C 11/12 - Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
• B60C 11/04 - Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
• B60C 11/11 - Tread patterns in which the raised area of the pattern consists only of isolated elements, e.g. blocks
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition

Abstract

d that are able to at least partially face an outlet orifice 54 of said chamber. The intake and exhaust members are situated axially on either side of an internal partition 42 of the sleeve and are each mounted so as to bear axially against said partition.

IPC Classes  ?

• F04B 7/00 - Piston machines or pumps characterised by having positively-driven valving
• F04B 19/04 - Pumps for special use
• F04B 53/10 - ValvesArrangement of valves
• F04B 17/00 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors
• F04B 13/00 - Pumps specially modified to deliver fixed or variable measured quantities
• F04B 15/02 - Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
• F04B 19/22 - Other positive-displacement pumps of reciprocating-piston type

Abstract

A method and device for producing metal wire by sheathing a wire with an elastomer compound coming from an extruder is described herein. The aspects disclosed herein may include a feed canal for feeding a sheathing die, through which the wire is made to pass at a pre-established nominal speed. Various temperatures are controlled during the method based on a variety of parameters such as the measured speed at which the wire is moving is other than the nominal speed.

IPC Classes  ?

• B29C 48/154 - Coating solid articles, i.e. non-hollow articles
• B29C 48/25 - Component parts, details or accessoriesAuxiliary operations
• B29C 48/92 - Measuring, controlling or regulating
• B29C 48/285 - Feeding the extrusion material to the extruder
• B29C 48/86 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
• B29D 30/38 - Textile inserts, e.g. cord or canvas layers, for tyresTreatment of inserts prior to building the tyre
• B29B 15/12 - Coating or impregnating of reinforcements of indefinite length
• B29C 48/34 - Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
• B29C 48/88 - Thermal treatment of the stream of extruded material, e.g. cooling
• B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
• B29L 31/34 - Electrical apparatus, e.g. sparking plugs or parts thereof
• B29C 48/05 - Filamentary, e.g. strands
• B29K 21/00 - Use of unspecified rubbers as moulding material
• B29K 705/00 - Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
• B29L 30/00 - Pneumatic or solid tyres or parts thereof

Abstract

2/g, wherein the composition comprises an aromatic dicyclopentadiene plasticizing resin comprising essentially styrene, ethylene and dicyclopentadiene units, at a content ranging from 2 to 40 phr, the composition containing less than 5 phr of another plasticizer.

IPC Classes  ?

• C08L 9/06 - Copolymers with styrene
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 3/04 - Carbon
• C08L 57/02 - Copolymers of mineral oil hydrocarbons
• C08K 5/00 - Use of organic ingredients

Abstract

Embodiments of the present invention include a tire tread, a tire including the tire tread, and methods of reducing tread wear on a tire. Particular embodiments of the tread include a plurality of tread elements, where for each of the plurality of tread elements, an average radial inclination angle comprising a combined average of an average radial first-side angle and an average radial second-side angle for all of the plurality of tread elements along the first and second longitudinally-spaced sides is substantially greater than zero. Additionally, as to the plurality of tread elements, an average axial inclination angle comprising a combined average of the average axial first-side angle and an average axial second-side angle for all of the one or more tread elements along the first and second longitudinally-spaced sides is substantially greater than zero.

IPC Classes  ?

• B60C 11/03 - Tread patterns
• B60C 11/13 - Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
• B60C 19/00 - Tyre parts or constructions not otherwise provided for

Abstract

se.

IPC Classes  ?

• B29C 39/36 - Removing moulded articles
• B29C 45/40 - Removing or ejecting moulded articles
• G01M 17/02 - Tyres
• B29D 30/06 - Pneumatic tyres or parts thereof
• B29D 30/00 - Producing pneumatic or solid tyres or parts thereof
• B60C 99/00 - Subject matter not provided for in other groups of this subclass
• B29C 45/57 - Exerting after-pressure on the moulding material
• B29C 37/00 - Component parts, details, accessories or auxiliary operations, not covered by group or
• B29C 33/00 - Moulds or coresDetails thereof or accessories therefor
• B29C 33/42 - Moulds or coresDetails thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves

Abstract

0.

IPC Classes  ?

• B29C 37/00 - Component parts, details, accessories or auxiliary operations, not covered by group or
• B29D 30/06 - Pneumatic tyres or parts thereof

Abstract

The tread has a wearable thickness of material EMU and has raised elements delimited by grooves. Each solid part has a contact face and a cavity with a depth greater than 50% of the wearable thickness. Each cavity opens onto the contact face when new and is delimited by a wall surface and a bottom surface. Each wall surface deliminates a cavity that intersects the contact face along a corner edge contour that has a geometry that has a major axis which is at least 1.5 times the length of a minor axis when new. For any tread surface down to a predefined wear level, the level is at most 30% of the wearable thickness of material EMU, and the angle between the major axis and the circumferential direction is between 0 and 40 degrees. After the wear level, the angle is greater than 40 degrees.

IPC Classes  ?

• B60C 11/11 - Tread patterns in which the raised area of the pattern consists only of isolated elements, e.g. blocks
• B60C 11/24 - Wear-indicating arrangements
• B60C 11/03 - Tread patterns

Abstract

The invention relates to a device (1) for handling tyre casings, which comprises: at least one first actuator (7) capable of pushing a roll (18) comprising tyre casings arranged in series in the roll in a non-vertical general direction, so as to transfer the roll from a first mounting (3, 11) to a second mounting (3, 11); and at least one second actuator (7) capable of retaining the roll during the transfer.

IPC Classes  ?

• B29D 30/00 - Producing pneumatic or solid tyres or parts thereof

Abstract

The invention relates to a tyre (1), the tread (9) of which comprises a peripheral reinforcement (20) consisting of a material of a higher rigidity than that of the rubber mixture of the rest of the tread, the tyre having an outer side E and an inner side I, the peripheral reinforcement (20) comprising a reinforcement layer placed in the tread pattern blocks arranged axially on the outside in relation to one of the first (11) and second (12) peripheral grooves of the tread, from the outside inwards and axially close to said peripheral groove.

IPC Classes  ?

• B60C 11/13 - Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping

Abstract

A, which is preferably divalent, is an atom or a group of atoms connecting Q to B.

IPC Classes  ?

• C08C 19/22 - Incorporating nitrogen atoms into the molecule
• C08L 15/00 - Compositions of rubber derivatives
• C08K 5/00 - Use of organic ingredients
• C08K 3/013 - Fillers, pigments or reinforcing additives

Abstract

A tire the tread of which contains at least three circumferential grooves, having at least three radially superposed layers of elastomeric compounds. A first elastomeric compound constituting the first layer forming the radially outer part of the tread has a maximum value of tan(δ)max, greater than 0.110, a second elastomeric compound constituting the second layer radially on the inside has a tan(δ)max at least 10% lower than the first elastomeric compound, the radially innermost third layer of the tread consists of at least two first parts and of at least three second parts axially, each one in contact with at least one of the at least two first parts, the at least two first parts axially centered on a radial plane passing through one of the at least three circumferential grooves consisting of the second compound and the at least three second parts consisting of a third elastomeric compound having a maximum value of tan(δ), denoted tan(δ)max, at least 10% lower than the second elastomeric compound.

IPC Classes  ?

• B60C 11/00 - Tyre tread bandsTread patternsAnti-skid inserts
• B60C 11/03 - Tread patterns

Abstract

C) hydration of ethylene fed by ethylene effluent and/or water effluent both from separation B, to produce an ethanol hydration effluent then being recycled to separation B.

IPC Classes  ?

• C07C 1/24 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms by elimination of water
• C07C 29/74 - SeparationPurificationStabilisationUse of additives
• C07C 1/20 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms
• C07C 1/207 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as hetero atoms from carbonyl compounds
• C07C 29/04 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by addition of hydroxy groups to unsaturated carbon-to-carbon bonds, e.g. with the aid of H2O2 by hydration of carbon-to-carbon double bonds

Abstract

The present invention relates to a modified diene elastomer predominantly comprising a species coupled via a group bearing a function comprising a silicon atom predominantly hydrolyzed into silanol and a tertiary amine function, linked to the diene elastomer via the silicon atom, and to the process for synthesizing the modified diene elastomer. This elastomer has the particular feature of not undergoing any change in Mooney viscosity during its storage.

IPC Classes  ?

• C08C 19/25 - Incorporating silicon atoms into the molecule
• C08C 19/44 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
• C08L 15/00 - Compositions of rubber derivatives
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
• C08K 3/00 - Use of inorganic substances as compounding ingredients

Abstract

The invention relates to a mould for manufacturing a tyre, said mould comprising a moulding ring, said ring comprising a plurality of sectors, each sector comprising a plurality of interchangeable elements (18), said elements supporting a moulding surface (20) from which at least two raised elements rise on the left and right (22G, 22D) separated by a transverse distance (D22), the mould comprising a blade (24) for transversely placing a reinforcement (10) in the transverse direction (DT) between the two raised elements (22G, 22D) and offering two intermediate bearing points (PIG, PID) separated by a recessed portion, said intermediate bearing points (PIG, PID) being located at a height (HIG, HID) no higher than the height (H22G, H22D) of the raised elements (22G, 22D), the bearing distance (DA) separating said two intermediate bearing points (PIG, PID) being smaller than the transverse distance (D22) separating the two raised elements (22G, 22D), and the recessed portion of the blade not offering any bearing points.

IPC Classes  ?

• B29D 30/06 - Pneumatic tyres or parts thereof
• B29D 30/66 - Moulding treads on to tyre casings, e.g. non-skid treads with spikes

Abstract

An Extruder for shaping a viscous material such as a blend of rubber is disclosed herein. The extruder includes a screw rotationally driven about an axis (XX′) in a barrel and bearing one or more helical flights extending radially outwards from a central shaft of the screw, the extruder comprising a material homogenization zone (H) through which a screw portion comprising interrupted flight elements forming empty annular spaces extends axially, and a barrel portion delimiting the said homogenization zone bearing flight elements extending radially inwards into the said empty annular spaces. According to the disclosure, the barrel portion delimiting the homogenization zone is itself rotationally driven about the axis XX′ to form a rotary barrel.

IPC Classes  ?

• B29C 47/92 - Measuring, controlling or regulating
• B29C 47/50 - using at least two screws, one after the other, e.g. multi-stage plasticisers
• B29B 7/50 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with rotary casing
• B29C 47/36 - Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
• B29C 47/60 - Screws
• B29B 7/42 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
• B29C 47/66 - Barrels or cylinders
• B29K 21/00 - Use of unspecified rubbers as moulding material

Abstract

A mold for a tire is disclosed herein. The mold includes first and second shells mold-able to lateral sidewalls of the tire, and a plurality of sectors that are distributed in the circumferential direction and are mold-able to the tread of said tire. The sectors are radially movable between an open position and a closed position of the mold. The mold also comprises at least one spacing interposed between each sector and each shell in order to keep said sector and the shells spaced apart in the radial direction in the closed position of the mold, such that the shells and the sectors are in contact in the radial direction only by way of the spacing. The spacing is also able to limit the heat transfer between the shells and the sectors in said closed position.

IPC Classes  ?

• B29D 30/06 - Pneumatic tyres or parts thereof

Abstract

A bicycle tire comprising at least one rubber composition based on at least one styrene/butadiene copolymer, SBR, having a Tg of greater than or equal to −65° C., at a content of greater than or equal to 50 parts per hundred parts of elastomer, phr, a reinforcing filler at a content of greater than 100 phr comprising at least carbon black, and a plasticizing system at a content of greater than 100 phris provided. The content of plasticizer is greater than the content of reinforcing filler and the weight fraction of elastomer in the composition is less than or equal to 33%.

IPC Classes  ?

• C08L 9/06 - Copolymers with styrene
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition

Abstract

A method for synthesizing a modified polymer comprising epoxide groups along the polymer chain, by a hydrosilylation reaction of the unsaturations with a hydrosilane bearing an epoxide function in the presence of a suitable catalyst is provided. The method is simple, reproducible and able to be used on an industrial scale, and makes it possible to obtain high grafting yields, since they may reach 100%.

IPC Classes  ?

• C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
• C08C 19/25 - Incorporating silicon atoms into the molecule
• C08L 9/06 - Copolymers with styrene
• C08L 15/00 - Compositions of rubber derivatives

Abstract

A Method for manufacturing molding elements for molds is provided herein. The molds are used for molding tires provided with a tread with a circumferential arrangement of tread pattern elements. The method includes: a step consisting in aligning a plurality of basic linings; a step consisting in generating, from the basic tread circumference portion, an intermediate support; and obtaining an unfinished molding element from the intermediate support.

IPC Classes  ?

• B29D 30/06 - Pneumatic tyres or parts thereof
• B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process
• B29C 33/30 - Mounting, exchanging or centering
• B29L 30/00 - Pneumatic or solid tyres or parts thereof
• B29K 83/00 - Use of polymers having silicon, with or without sulfur, nitrogen, oxygen or carbon only, in the main chain, as moulding material
• B29L 31/00 - Other particular articles

Abstract

Cutting method for cutting a semi-finished molding element to yield segments of a mold for molding and vulcanizing tires is disclosed herein. The said molding element includes a plurality of segments originating from one and the same molding operation, the said molding element also includes at least one pair of male securing members on each side of a molding face to form the tread patterns in the tread of the tire that is to be molded.

IPC Classes  ?

• B29D 30/06 - Pneumatic tyres or parts thereof
• B24C 1/04 - Methods for use of abrasive blasting for producing particular effectsUse of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
• B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process
• B23P 15/24 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies

Abstract

The tread includes over at least a first axial part (M) at least one wavy groove in a first direction and wavy grooves in a second direction. The wavy grooves in the second direction are connected to the wavy groove in the first direction. Over at least a second axial part (B) of the tread, at least one wavy groove continuous in a third direction, and wavy grooves continue in a fourth direction. The wavy grooves in the fourth direction are connected to the wavy groove in the third direction. When new, the open parts of the first axial part (M) are connected to one another, and the open parts of the second axial part (B) are not connected with one another. Beyond a part-wear condition, the open parts of the second axial part (B) are connected to one another, and the open parts of the first axial part (M) are not connected with one another.

IPC Classes  ?

• B60C 11/03 - Tread patterns
• B60C 11/12 - Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes

Abstract

The invention relates to a tyre comprising a tread layer (10), said tread layer comprising at least one elongate block (13) extending over the entire circumference of the tyre. The elongate block (13) is delimited by at least one side wall (15) and a contact face (17), said contact face (17) being intended to come into contact with a roadway. The tyre comprises at least one channel (19) extending in the elongate block (13) and opening out on the side wall (15) of said elongate block. The tyre also comprises an incision (21) extending from the channel (19) towards the contact face (17), said incision (21) opening out onto the side wall (15) of the elongate block (13) at an exit zone of the side wall. The side wall (15) of the elongate block (13) is inclined with respect to a radial direction (Z), at least in the exit zone of the side wall of the incision (21), at an angle θ of between 20 degrees and 60 degrees with respect to said radial direction (Z).

IPC Classes  ?

• B60C 11/03 - Tread patterns
• B60C 11/12 - Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
• B60C 11/13 - Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
• B60C 11/04 - Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag

Abstract

The invention relates to a tyre including a tread (1) comprising a plurality of blocks (3) separated by grooves (5), each block (3) including a contact surface (7) intended for engaging with the ground and at least one complex incision (9) with a depth P and a length L defined by two rubber walls facing one another. Every wall of at least one complex incision (9) comprises an alternation of bumps (11) and recesses (13) extending from the contact surface of the block to a depth Pa lower than the depth P. The alternations of bumps and recesses of the two walls defining the complex incision are complementary so that the space between same is constant overall in said alternation area. The complex incision widens from the depth Pa to form a recess (15) with width W extending in the length L.

IPC Classes  ?

• B60C 11/12 - Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes

Abstract

A tire made of rubbery material having a sidewall includes a pattern formed on this sidewall. The pattern has a plurality of protruding elements, with the protruding elements having the form of spherical-cap portions having a radius, and, within the pattern, each protruding element interpenetrates with several adjacent protruding elements so that the distance between a tip of the protruding element and a tip of another adjacent protruding element is less than the diameter of the protruding element.

IPC Classes  ?

• B60C 13/02 - Arrangement of grooves or ribs
• B60C 13/00 - Tyre sidewallsProtecting, decorating, marking, or the like, thereof

Abstract

Method for evaluating thermal stresses associated with the use of a tyre mounted on a rim, comprising the steps during which: - a temperature of a gaseous fluid contained in an internal cavity of the tyre and a temperature of the rim are measured at regular intervals of time, - a temperature at least in an internal zone of the materials of which the tyre is made is estimated using a pre-established law connecting this temperature to the temperature of the gaseous fluid contained in the internal cavity of the tyre and to the temperature of the rim.

IPC Classes  ?

• B60C 23/04 - Signalling devices actuated by tyre pressure mounted on the wheel or tyre
• B60C 23/20 - Devices for measuring or signalling tyre temperature

Abstract

Method for evaluating thermal constraints related to the use of a tire mounted on a rim to provide an indicator informing a user of the load rating and speed rating maximums. The method includes stages during which are measured, at regular time intervals, the temperature of a carbonated liquid contained in an inner cavity of a tire, and a temperature of the rim, and is estimated a temperature in at least one internal area of the materials making up the tire, with the aid of a pre-established law relating this temperature to the temperature of the carbonated liquid contained in the inner cavity of the tire and to the temperature of the rim.

IPC Classes  ?

• B60C 23/04 - Signalling devices actuated by tyre pressure mounted on the wheel or tyre
• B60C 23/20 - Devices for measuring or signalling tyre temperature

Abstract

The invention relates to a modified diene elastomer comprising predominantly the entity functionalized in the middle of the chain by an alkoxysilane group, optionally partially or completely hydrolyzed to give silanol, bearing an epoxide function and the silicon atom of which bonds the two pieces of the chain, the chain ends of the modified diene elastomer being functionalized to at least 70 mol %, with respect to the number of moles of chain end, by an amine function.

IPC Classes  ?

• C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
• C08C 19/25 - Incorporating silicon atoms into the molecule
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08C 19/44 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
• C08C 19/40 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with oxygen or oxygen-containing groups with epoxy radicals
• C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
• C08K 3/36 - Silica

Abstract

Disclosed herein is a tread for a tire. The tread includes at least one elongate block of rubbery material of width W and length L with L>>W. This elongate block extends in a circumferential direction (X) when the tread is mounted on the tire. The elongate block includes a contact surface intended to come into contact with the ground and a first lateral wall and a second lateral wall delimiting this contact surface. The elongate block includes a plurality of sipes opening onto the contact surface of the elongate block, with each sine extending in an oblique direction opening onto the first lateral wall and onto the second lateral wall. The sipes are distributed over the contact surface of the block in such a way that when one sipe reaches the second lateral wall another sipe starts out from the first lateral wall, at a same circumferential level (N) on the elongate block. With the sipes delimiting sub-blocks in the elongate block, at least two of these sub-blocks are configured differently in the tread.

IPC Classes  ?

• B60C 11/12 - Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
• B60C 11/03 - Tread patterns
• B60C 11/04 - Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag

Abstract

The present invention relates to a rubber composition based at least on a diene elastomer, a reinforcing filler comprising a reinforcing inorganic filler, a 1,3-dipolar compound bearing an imidazole function and a blocked mercaptosilane, the blocked mercaptosilane being a blocked thiol comprising an organooxysilyl or silanol group. Such a composition has improved processing without adversely affecting the dispersion of the reinforcing inorganic filler.

IPC Classes  ?

• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 3/00 - Use of inorganic substances as compounding ingredients
• C08K 3/36 - Silica
• C08K 5/544 - Silicon-containing compounds containing nitrogen
• C08L 21/00 - Compositions of unspecified rubbers
• C08K 5/3445 - Five-membered rings
• C08K 5/548 - Silicon-containing compounds containing sulfur

Abstract

The present invention relates to a tyre, the tread of which includes a rubber composition including at least: a diene elastomer, 50 to 150 parts per hundred elastomer of a reinforcing filler, a cross-linking system, a plasticising system including greater than 15 and at most 80 parts per hundred elastomer of a non-polymeric phenolic compound, the melting temperature of which is less than 170°C. The use of phenolic plasticisers of which the melting temperature is less than 170°C makes it possible to obtain rubber compositions for tyre treads that have improved cohesion properties, and even significantly improved tyre wear properties, while maintaining low, or even negligible, rolling resistance and a good plasticising capacity.

IPC Classes  ?

• C08K 5/13 - PhenolsPhenolates
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 3/04 - Carbon
• C08K 3/36 - Silica
• C08L 7/00 - Compositions of natural rubber
• C08L 9/06 - Copolymers with styrene

Abstract

A device and corresponding method for depositing a powder bed on a surface (1) is provided. The device comprises a deposition module (2) configured in order to scan the surface while delivering the powder onto the surface. The deposition module has at least one electromagnetic-response probe (5) capable of analysing a delivered portion (6) of the powder bed. The invention finds an application in sintering or selective laser melting machines.

IPC Classes  ?

• B33Y 10/00 - Processes of additive manufacturing
• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
• B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor
• B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Abstract

The invention relates to a drum (2) for producing a tyre casing blank, comprising sections (8) forming a circumferential face of the drum, expansion means (40, 36, 28, 30, 32) that can move the sections in the radial direction such that all of the sections extend at the same distance from the shaft at any given moment, and regulating means (12, 22) different from the expansion means and able to move the sections in the radial direction such that all of the sections extend at the same distance from the shaft at any given moment. The expansion means can be used in any position of the sections under the effect of the regulating means.

IPC Classes  ?

• B29D 30/24 - Drums

Abstract

A sensor device is provided for use in tire inspection. The sensor device is configured for removable placement along the inner surface of the tire. The sensor device includes multiple rows of sensors, which are used to provide signals that can compensate for the effect of vibrations or mechanical agitation as the sensors are passed over the inner surface of the tire. The sensor device may have a profile that allows for placement of the multiple rows of sensors in close proximity to the inner surface of the tire.

IPC Classes  ?

• G01M 17/02 - Tyres
• G01N 27/82 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
• G01B 7/32 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring areas

Abstract

A method of using a sensor device for tire inspection is provided. Signals are received from multiples rows of sensors separated by a predetermined distance. The sensors are positioned next to the inner surface of the tire for inspection. Signals from the different rows of sensors are used to identify e.g., breaks in the reinforcements of the tire and also used to identify undesirable signals generated from vibration or jarring of the sensor device.

IPC Classes  ?

• G01M 17/02 - Tyres

Abstract

A sensor device is provided for use in tire inspection. The sensor device is configured for removable placement along the inner surface of the tire. The sensor device includes multiple rows of sensors, which are used to provide signals that can compensate for the effect of vibrations or mechanical agitation as the sensors are passed over the inner surface of the tire. The sensor device may have a profile that allows for placement of the multiple rows of sensors in close proximity to the inner surface of the tire.

IPC Classes  ?

• B60C 23/04 - Signalling devices actuated by tyre pressure mounted on the wheel or tyre

Abstract

A method of using a sensor device for tire inspection is provided. Signals are received from multiples rows of sensors separated by a predetermined distance. The sensors are positioned next to the inner surface of the tire for inspection. Signals from the different rows of sensors are used to identify e.g., breaks in the reinforcements of the tire and also used to identify undesirable signals generated from vibration or jarring of the sensor device.

IPC Classes  ?

• B60C 23/04 - Signalling devices actuated by tyre pressure mounted on the wheel or tyre

Abstract

The invention relates to a matrix element for a tyre mould which includes a body (12) defining a moulding surface (14) intended for at least partially moulding a tread of the tyre, at least one injection nozzle (26) arranged on the body and provided with at least one outlet opening (26a), at least one supply channel extending into the body and the injection nozzle, communicating with said outlet opening, and at least one sealing member (30) which is movable relative to the injection nozzle between a closed position and an open position of said outlet opening. The body (12), the injection nozzle (26) and the sealing member (30) are manufactured by deposition and selective melting of stacked powder layers.

IPC Classes  ?

• B29D 30/06 - Pneumatic tyres or parts thereof
• B29D 30/66 - Moulding treads on to tyre casings, e.g. non-skid treads with spikes
• B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process
• B29C 33/10 - Moulds or coresDetails thereof or accessories therefor with incorporated venting means
• B29C 45/26 - Moulds
• 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

Abstract

A tire tread comprising a rubber composition that is based upon a cross -linkable elastomer composition, the cross-linkable elastomer composition comprising, per 100 parts by weight of rubber (phr) a highly unsaturated rubber and greater than 45 phr of a terpene phenolic resin. The rubber composition may further include a reinforcing filler and a curing system. Optionally the highly unsaturated rubber may be functionalized with an end-chain silanol group and in some embodiments, the entire rubber content of the rubber composition may be such a functionalized rubber, e.g., a silanol end-chain functionalized SBR.

IPC Classes  ?

• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition

Abstract

A mold for vulcanizing and molding a tire is disclosed herein. The tire includes a tread delimited by two sidewalls, and the mold includes a ring for molding the tread of the tire and two shells having tire-molding surface features for molding the sidewalls. At least one of the shells has a removable shell part extending circumferentially on the side of the sidewall of the tire to be molded, with the tire-molding surface features being incorporated into the removable shell part.

IPC Classes  ?

• B29D 30/06 - Pneumatic tyres or parts thereof
• B29C 33/30 - Mounting, exchanging or centering
• B29D 30/72 - Side-walls
• B29L 30/00 - Pneumatic or solid tyres or parts thereof
• B29C 33/42 - Moulds or coresDetails thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves

Abstract

A rubber substrate has a material diffusion barrier, and a method produces the same. In an embodiment, a method for producing a material diffusion barrier on a rubber substrate includes exposing the rubber substrate to a cationic solution to produce a cationic layer on the rubber substrate. The method also includes exposing the cationic layer to an anionic solution 5 to produce an anionic layer on the cationic layer. The anionic layer comprises graphene oxide. The layer includes the cationic layer and the anionic layer. The layer comprises the material diffusion barrier.

IPC Classes  ?

• B05D 5/12 - Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a coating with specific electrical properties
• B05D 7/02 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
• H01B 1/12 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances organic substances

Abstract

Particular embodiments of the invention include a closed-loop tread strip forming unit (100) and methods for forming tread strips using a closed-loop unit. Embodiments of such forming units include a tread strip extruder (110) located at a pre-cure end of the closed-loop tread strip forming unit. Such units include an uncured tread strip handling assembly (120) configured to transport the first uncured tread strip from the first tread strip extruder and to a first tread strip mold member (130). The unit further includes a curing press (150) having an inlet and an outlet, a pre-cure mold handling assembly (140) configured to insert the loaded tread strip mold member into the curing press, a post-cure mold handling assembly (160) configured to receive the loaded tread strip mold member from the outlet of the curing press, a return assembly (170) configured to transfer the first tread strip mold member to the pre-cure end to complete a closed-loop.

IPC Classes  ?

• B29D 30/00 - Producing pneumatic or solid tyres or parts thereof
• B29D 30/06 - Pneumatic tyres or parts thereof

Abstract

Particular embodiments of the invention include apparatus and methods for compensating for shrinkage of a polymeric material in a mold during curing operations. Embodiments of the method include providing a mold comprising a molding cavity defining an interior mold volume separated from an exterior environment and introducing a volume of polymeric material into the molding cavity. Such methods further include impeding the development of a void in the volume of polymeric material by, either: isolating the volume of polymeric material within the molding cavity from the exterior environment, or reducing the interior mold volume of the molding cavity to at least substantially consume a volume of polymeric material shrinkage. Such methods further include curing the polymeric material to form a molded polymeric form.

IPC Classes  ?

• B29C 39/00 - Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressureApparatus therefor
• B29C 37/00 - Component parts, details, accessories or auxiliary operations, not covered by group or
• B29C 39/26 - Moulds or cores
• B29C 39/40 - Compensating volume change, e.g. retraction

Abstract

Embodiments of the invention include a method for balancing a pneumatic tire including the following steps: determining that a tire is imbalanced, the tire having an interior side including an undertread region spaced apart by a thickness of the tire from a tread of the tire; identifying a balancing weight amount for application to the interior side of the tire at a balancing location; applying a sealant coating annularly around the tire along the undertread region, the coating formed of a sealant material having a thickness that is variable in an annular direction of the tire, the variation in thickness providing a balancing mass arranged at a balancing location to substantially reduce the imbalance, the balancing mass substantially comprising the balancing weight amount. Embodiments also include a tire having a coating formed by the method and an apparatus for performing the method.

IPC Classes  ?

• B60C 19/12 - Puncture preventing arrangements
• B60C 19/00 - Tyre parts or constructions not otherwise provided for
• B29C 73/16 - Auto-repairing or self-sealing arrangements or agents
• B29D 30/06 - Pneumatic tyres or parts thereof

Abstract

The invention relates to a device for coating a wire with a coating material, including: a housing (2) which includes a holder (4) and a cover (5) mounted on the holder, defining a chamber (6), and a die body (18) installed in said chamber, between the holder and the cover. An inlet passage (41) and an outlet passage (42) are arranged between the holder and the cover, the die body comprising a lower part and an upper part (18a, 18b), a sized die channel (35) being arranged therebetween, said inlet and outlet passages and said sized die channel being aligned such that the wire (2) can pass longitudinally therethrough. The device includes a duct (43) for transporting the coating product, having a lower outlet end located near the wire (2), between the upstream through-passage and the die channel.

IPC Classes  ?

• B29B 15/12 - Coating or impregnating of reinforcements of indefinite length
• B29B 15/14 - Coating or impregnating of reinforcements of indefinite length of filaments or wires

Abstract

The invention relates to a tyre comprising a rubber composition based on at least one diene elastomer, a reinforcing filler, a specific polyfunctional acrylate derivative, silica as predominant reinforcing filler, a guanidine derivative, and a peroxide, the polyfunctional acrylate derivative and peroxide contents being such that the ratio of the polyfunctional acrylate derivative content to the peroxide content is greater than or equal to 6.

IPC Classes  ?

• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 5/103 - EstersEther-esters of monocarboxylic acids with polyalcohols
• C08K 5/14 - Peroxides
• C08K 5/31 - GuanidineDerivatives thereof
• C08L 7/00 - Compositions of natural rubber
• C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons

Abstract

The invention concerns a deposition device (10) for depositing a crimped wire (12) on a receiving surface (14), the deposition device (10) being characterised in that it comprises a support (16) and a depositing head (18) for depositing the crimped wire (12) on the receiving surface (14), said depositing head (18) comprising a right-hand conveyor (20D) and a left-hand conveyor (20G), each conveyor (20D,20G) transporting a plurality of elements (22) for gripping the wire (12), giving the wire (12) a crimped shape and bringing the crimped wire (12) to the receiving surface (14), the elements (22) of each conveyor (20D,20G) being aligned along a closed circuit unique to each conveyor, the elements (22) of each conveyor (20D,20G) extending towards the outside of the closed circuit of same, the elements (22) of each conveyor (20D,20G) being moved along the closed circuit of same, the right-hand conveyor (20D) and left-hand conveyor (20G) being mounted facing each other on the support (16) such that each element (22) of one of the conveyors (20D,20G) intersects the closed circuit in two locations followed by the elements (22) of the other conveyor (20D,20G) when said element (22) performs a complete turn of the closed circuit of the conveyor of same, and the moving of the elements (22) of one conveyor (20D,20G) being synchronised with the moving of the elements (22) of the other conveyor (20D,20G).

IPC Classes  ?

• B60C 9/02 - Carcasses
• B29D 30/38 - Textile inserts, e.g. cord or canvas layers, for tyresTreatment of inserts prior to building the tyre
• B29C 70/16 - Fibrous reinforcements only characterised by the structure of fibrous reinforcements using fibres of substantial or continuous length
• B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel

Abstract

The invention concerns, in particular, a device (1) for preparing an undulating reinforcing strip intended for the production of a tyre, said device (20) comprising: - a carousel (4) capable of guiding a plurality of fingers (5) in a generally circular motion about a carousel axis (AC), - a rotary star wheel (6) rotatable about a star wheel axis (AE), said rotary star wheel carrying a plurality of rotary rollers (7) having axes parallel to the star wheel axis, said rollers being distributed on a circle (61) concentric to the star wheel axis, - means for synchronising the generally circular motion of the fingers and the rotation of the star wheel, - guide means (9, 10) for guiding the flat reinforcement strip entering the device.

IPC Classes  ?

• B29D 30/22 - Breaker plies being applied in the unexpanded state
• B29D 30/38 - Textile inserts, e.g. cord or canvas layers, for tyresTreatment of inserts prior to building the tyre
• B29D 30/30 - Applying the layersGuiding or stretching the layers during application

Abstract

The invention concerns, in particular, a method for producing a tyre comprising a step consisting of assembling a blank (1) on a shouldered drum (2), said blank comprising at least one carcass ply (3) and circumferential bead reinforcements (11, 12), said method being characterised in that: - the shouldered drum comprises shoulders (21) having a height (H) at least equal to 25 mm, - the circumferential bead reinforcements are reinforcements wound in several turns around the blank, - the circumferential bead reinforcements are positioned spirally against the shoulder of the drum, the circumferential bead reinforcements being positioned in said blank in a substantially definitive arrangement, - the carcass ply does not comprise a fold around the circumferential bead reinforcements. The invention further concerns a tyre obtained according to said method.

IPC Classes  ?

• B60C 15/00 - Tyre beads, e.g. ply turn-up or overlap
• B29D 30/12 - Cores
• B29D 30/58 - Applying bands of rubber treads, i.e. applying camel backs
• B29D 30/16 - Applying the layersGuiding or stretching the layers during application
• B29D 30/48 - Bead-rings or bead-coresTreatment thereof prior to building the tyre
• B29D 30/18 - Fitting the bead-rings or bead-coresFolding the textile layers around the rings or cores

Abstract

A tire has a material diffusion barrier, and a method produces the same. In an embodiment, a method for producing a material diffusion barrier on a tire comprises exposing a surface of the tire to a cationic solution to produce a cationic layer on the surface. The method further comprises exposing the cationic layer to an anionic solution to produce an anionic layer on the cationic layer, wherein a layer comprises the cationic layer and the anionic layer. The layer comprises the material diffusion barrier.

IPC Classes  ?

• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08L 71/02 - Polyalkylene oxides
• C08L 79/02 - Polyamines

Abstract

Embodiments of the invention provide a tire tread and a tire including the tread, the tread having an improved sacrificial groove arranged along each of one or both opposing lateral sides of the tread. A sacrificial groove is referred to as an intervening longitudinal groove extending into a thickness of the tread from an outer, ground-engaging side of the tread along a depthwise path initiating at an entry location and extending along a first portion of the path to a widthwise extent of the path offset laterally from the entry location towards the first lateral side by a distance substantially equal to 1 mm to 6 mm, and where the depthwise path extends further into the thickness to the terminal end along a second portion of the path, the terminal end being offset laterally from the widthwise extent towards the lateral centerline of the tread.

IPC Classes  ?

• B60C 11/01 - Shape of the shoulders between tread and sidewall, e.g. rounded, stepped or cantilevered
• B60C 11/03 - Tread patterns

Abstract

The present invention includes methods and apparatus for curing retreaded tires, which includes restricting the transfer of polymeric material within a tread strip mold (10). The steps of the method include placing a volume of polymeric material within a tread strip mold comprising a tread cavity (30) and a demolding member cavity (40). The demolding member cavity includes a buffer (50) and a demolding tongue cavity (60). The demolding cavity is connected to one end of the tread cavity with the buffer cavity between. A barrier (100) partially separates the demolding member cavity and the tread cavity. The steps of the method further include distributing the volume of polymeric material at least partially within the molding cavity wherein an excess volume of polymeric material in the demolding member cavity is substantially restricted from transferring into the tread cavity by the barrier.

IPC Classes  ?

• B29C 33/00 - Moulds or coresDetails thereof or accessories therefor
• B29D 30/06 - Pneumatic tyres or parts thereof
• B29C 33/44 - Moulds or coresDetails thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
• B29D 30/08 - Building tyres

Abstract

The invention relates to a rubber composition based on at least one diene elastomer, a reinforcing filler, a cross-linking system and a hydrocarbonated resin, said hydrocarbonated resin having a number average molecular weight (Mn) of between 700 and 1000 g/mol, an average molecular weight Mz of more than 6000 g/mol, and a polymolecularity index (PI) higher than 2.4.

IPC Classes  ?

• C08L 7/00 - Compositions of natural rubber
• C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
• C08L 45/00 - Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring systemCompositions of derivatives of such polymers
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition

Abstract

A tread (10) for a heavy truck tyre, said tread comprising four grooves (21, 22) of general circumferential orientation delimiting a central region (30), intermediate regions (40) and edge regions (50), each of the intermediate regions (40) being divided into a plurality of elongate relief elements (41), said elongate relief elements (41) delimiting oblique grooves (44) opening into the circumferential grooves (21, 22) and being inclined at an average angle of between 30 degrees and 60 degrees relative to the circumferential direction, said elongate relief elements (40) having an average length in the circumferential direction of between 50 and 70 mm, the depth of the oblique grooves (44) being at least equal to 30% of the depth of the circumferential grooves (21, 22), each elongate relief element (41) comprising a plurality of incisions (45) opening into the oblique grooves (44). This tread is designed such that each elongate relief element (41) further comprises an oblique internal cutout (46) having a total depth at least equal to 75% of the thickness of material to be worn PMU, said oblique cutout comprising a wide portion and a portion forming an incision, said incision being extended by a channel intended to form a new groove after wear.

IPC Classes  ?

• B60C 11/03 - Tread patterns
• B60C 11/12 - Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes

Abstract

The invention relates to a tyre comprising a rubber composition containing at least one diene elastomer, a reinforcing filler, a specific polyfunctional acrylate derivative and a peroxide, the polyfunctional acrylate derivative and peroxide contents being such that the ratio of the polyfunctional acrylate derivative content to the peroxide content is higher than or equal to 6.

IPC Classes  ?

• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 5/103 - EstersEther-esters of monocarboxylic acids with polyalcohols
• C08K 5/14 - Peroxides

Abstract

The invention concerns a deposition device (10) for depositing a crimped wire on a receiving surface, the deposition device (10) depositing the wire such that the crimps of the wire extend in the width of the receiving surface, the deposition device (10) comprising a support and a depositing head (18) for depositing the crimped wire, said depositing head (18) comprising a right-hand conveyor (20D) and a left-hand conveyor (20G), each conveyor (20D,20G) transporting a plurality of elements (22) for gripping the wire, giving the wire a crimped shape and bringing the crimped wire to the receiving surface, and at least one conveyor (20D,20G) being mounted movable relative to the other conveyor such that the movement of one conveyor relative to the other makes it possible to modify the amplitude of the crimps of the deposited wire.

IPC Classes  ?

• B29D 30/30 - Applying the layersGuiding or stretching the layers during application

Abstract

Present invention provide a tread (1) for a tire having a plurality of grooves (3) formed in the tread, a plurality of contact elements (4) delimited by a plurality of grooves (3) and having circumferential surfaces, transverse surfaces (41, 42) and a contact surface (2) intended to come into contact with ground during rolling, the contact element (4) having a height H, and at least one connecting member (5) connecting the transverse surface (41, 42) of the contact element to the transverse surface (41, 42) of the circumferentially adjacent contact element, a distance h between one of the connecting members and the contact face (2) is at most equal to 30% of the height H, and a material of the connecting member (5) is different from a material of the contact element (4), and a Young modulus of the material of the connecting member (5) is higher than a Young modulus of the material of the contact element (4).

IPC Classes  ?

• B60C 11/03 - Tread patterns
• B60C 11/00 - Tyre tread bandsTread patternsAnti-skid inserts
• B60C 11/13 - Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping

Abstract

Present invention provides a tire (1) intended to be mounted on a mounting rim, the tire comprising a summit (2) surrounded on both sides by sidewalls (3) terminating in beads (4) provided to cooperate with the mounting rim of the tire, the tire comprising a carcass reinforcement (5) extending in the summit and the sidewalls, and anchored at its two ends in the beads, the carcass reinforcement being surmounted radially on the outside by a summit reinforcement (6) composed of a plurality of reinforcing plies (61, 62, 63), said summit reinforcement being surmounted radially on the outside by a tread (10) intended to come into contact with a ground during use of the tire, the tire comprising in its summit, at least one cavity (1 1) acting as a resonator and in fluid communication with the outside of the tire, when the tire is mounted onto a mounting rim each cavity (1 1) having an appropriate volume to form a calibrated resonator to attenuate the noise in a frequency range between 500 and 2000 Hz, the tire being characterized in that each cavity (11) is arranged substantially uniformly in the circumferential direction and is filled with a fibrous or a filamentary material.

IPC Classes  ?

• B60C 11/00 - Tyre tread bandsTread patternsAnti-skid inserts

Abstract

A tire with an improved grip on, preferably, snow ground includes a tread formed of a rubber composition. The rubber composition comprises at least, a diene elastomer, 0 to less than 45 phr of a reinforcing filler, between 30 and 180 phr of a plasticizer chosen from the group consisting of liquid plasticizers, hydrocarbon resins and the mixtures thereof, and between 2 and 50 phr of short fibers.

IPC Classes  ?

• C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 7/02 - Fibres or whiskers

Abstract

A snow tire with an improved grip on snow ground includes a tread formed of a rubber composition. The rubber composition comprises at least, more than 50 and up to 100 phr of a first diene elastomer chosen from the group consisting of natural rubber, synthetic polyisoprenes, polybutadienes and the mixtures thereof, optionally, 0 to less than 50 phr of another diene elastomer, 40 to 200 phr of a reinforcing filler comprising an inorganic filler, a carbon black or the mixture thereof, wherein a content of the carbon black is less than 20 phr, more than 10 phr and less than 100 phr of a liquid phosphate plasticizer having a glass transition temperature less than -80°C.

IPC Classes  ?

• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 3/04 - Carbon
• C08K 3/36 - Silica
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4
• C08L 7/00 - Compositions of natural rubber
• C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons

Abstract

A method and apparatus for molding non-pneumatic wheels is provided. The exemplary method and apparatus allow for the use of the same molding system to manufacture wheels with different hub constructions. Different configurations of removable mold elements are utilized within the same molding system to provide wheels with different hub constructions.

IPC Classes  ?

• B29D 30/02 - Solid tyres

Abstract

A method and apparatus for molding non-pneumatic wheels is provided. The exemplary method and apparatus allow for the use of the same molding system to manufacture wheels with different hub constructions. Different configurations of removable mold elements are utilized within the same molding system to provide wheels with different hub constructions.

IPC Classes  ?

• B29D 30/02 - Solid tyres

Abstract

Methods of forming rubber-based composites and tire components that can incorporate the rubber-based composites are described. The methods can be utilized to form composites in which one or more formation materials incorporated in the composite can have a structure on the microscopic level. The materials that form the composite can be provided in the microstructured composite in a layered arrangement with one another, and can include at least about 20 layers, and the composite can include a large average number of layers, generally more than 20, per millimeter of composite thickness.

IPC Classes  ?

• B32B 25/04 - Layered products essentially comprising natural or synthetic rubber comprising rubber as the main or only constituent of a layer, next to another layer of a specific substance
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition

Abstract

A method and apparatus for molding non-pneumatic wheels is provided. The exemplary method and apparatus allow for the use of the same molding system to manufacture wheels with different hub constructions. Different configurations of removable mold elements are utilized within the same molding system to provide wheels with different hub constructions.

IPC Classes  ?

• B29D 30/02 - Solid tyres
• B60C 7/00 - Non-inflatable or solid tyres
• B60C 7/10 - Non-inflatable or solid tyres characterised by means for increasing resiliency

Abstract

The invention relates to a method for detecting a defect on a surface of a tyre (4), in which automated means calculate values of a gradient of a plurality of texture parameters from an image of the surface (18) of the tyre (4), determine an image of the gradient (20), and threshold the image of the gradient in order to obtain a thresholded image (22).

IPC Classes  ?

• G06T 7/00 - Image analysis
• G06T 7/40 - Analysis of texture

Abstract

The invention relates to a tyre with an inflation pressure no lower than 6 bars, made up of at least two layers (2, 6) of reinforcing elements. The first layer (2) is folded back around the bead wires and the second layer (6) extends from one bead to the other, the ends thereof being axially external to the most axially external of each of the bead wires. According to the invention, each of the carcass reinforcement layers (2, 6) has a breaking strength per unit of width of more than 2250 daN/dm, the minimum rigidity per unit of width, measured for an elongation of less than 10 %, of the second carcass reinforcement layer being strictly greater than a value equal to 20 % of the minimum rigidity per unit of width, measured for an elongation of less than 10 %, of the first carcass reinforcement layer, the reinforcing elements of the two carcass reinforcement layers having a yarn count of less than 750 tex, the elongation of the reinforcement layers of the second carcass reinforcement layer being greater than 4 % under a force of 20 daN, and the secant modulus of elasticity under tension at 10 % elongation Mt, Mj comply with the relation Mt/Mj > 1.

IPC Classes  ?

• B60C 15/00 - Tyre beads, e.g. ply turn-up or overlap
• B60C 15/06 - Flipper strips, fillers, or chafing strips
• B60C 9/02 - Carcasses
• B60C 15/04 - Bead cores

Abstract

The invention relates to a snow tyre with improved grip on dry or wet ground, the tread thereof having a rubber composition comprising at least: between 50 and 100 pce of a butyl rubber; optionally, between 0 and 50 pce of another diene rubber; between 50 and 200 pce of an inorganic reinforcing filler such as silica; and more than 30 phr of a liquid phosphate plasticiser having a glass transition temperature lower than -80°C.

IPC Classes  ?

• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 3/36 - Silica
• C08K 5/521 - Esters of phosphoric acids, e.g. of H3PO4
• C08L 23/22 - Copolymers of isobuteneButyl rubberHomopolymers or copolymers of other iso-olefins
• C08L 23/28 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds

Abstract

The invention relates to a system for evaluating the contact area of a vehicle, said system comprising: a system for evaluating the condition of a tyre, comprising a casing that is positioned on the ground; means for determining at least one instant at which the vehicle passes over a distinct passage point of the casing of the evaluation system; and means for calculating at least one local contact area length of at least one tyre of the vehicle according to the passage of the vehicle and dimensional data of the casing and/or the vehicle and the speed of the vehicle.

IPC Classes  ?

• G01M 17/02 - Tyres
• B60C 11/24 - Wear-indicating arrangements
• G01P 3/64 - Devices characterised by the determination of the time taken to traverse a fixed distance
• B60C 23/06 - Signalling devices actuated by deformation of the tyre

Abstract

The invention relates to a system for evaluating the condition of a tyre, said system comprising a first casing which is positioned on the ground. The system comprises: a first sensor installed in the casing and intended to measure a first characteristic of a tyre travelling over the casing; and a second sensor installed in the casing and intended to measure a second characteristic of a tyre travelling over the casing, said first and second sensors being positioned such that the instants at which a vehicle travels over the casing at each of the sensors are different. The system also comprises an electronic control unit including means for determining the direction of travel of the vehicle on the casing according to the positions of each of the sensors in the casing and the instants at which a vehicle travels over each of the sensors.

IPC Classes  ?

• G01M 17/02 - Tyres

Abstract

The invention relates to a tyre tread having a rubber composition based on at least one natural or synthetic polyisoprene, in a proportion of between 50 pce and 100 pce, a reinforcing filler comprising predominantly in terms of weight of the inorganic filler, a coupling agent, a plasticiser in a proportion lower than or equal to 10 pce and a sulphur cross-linking system, characterised in that the composition contains between 0.7 and 2 pce of zinc.

IPC Classes  ?

• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 3/06 - Sulfur
• C08K 3/22 - OxidesHydroxides of metals
• C08K 3/36 - Silica
• C08L 7/00 - Compositions of natural rubber
• C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons

Abstract

The bead wire (52) for a tyre is substantially rotationally symmetric around an axis comprising several windings of at least one wire arranged axially beside one another over N layers Ci radially superimposed on top of one another. The bead wire (52) for a tyre comprises a base hexagonal bead wire (56) comprising: - radially external and internal layers (C'sup, C'inf) of N1 windings, - two axially and radially external lateral alignments (F1, F2) of N1 windings, - two axially external and radially internal lateral alignments (F3, F4) of N1 windings. The bead wire (52) for a tyre comprising a winding (E3.1, E4.1) for axial continuation of the radially internal layer (C'inf). The bead (52) for a tyre comprising an additional layer (Ca3) of N2 windings forming the radially external layer of the bead (52) for a tyre (10).

IPC Classes  ?

• B60C 15/04 - Bead cores

Abstract

The invention relates to a selective laser sintering method of manufacturing a tread molding element (1), said tread molding element (1) comprising at least a fine lamella (20) adapted to mold a shallow sipe in a tread tyre, the fine lamella having a length (L2). The fine lamella is sintered in a plurality of portions (p2) at different layers (N), in each layer (N) the laser beam sinters the portion (p2) of the fine lamella in only one passage in the length (L2) of the fine lamella (20) without round-trip passage of the laser beam, the direction (D1) of this passage being the same at the different layers (N) for building the different portions (p2) of the fine lamella (20). The thickness (w) of the fine lamella is smaller than 0,2 mm, and the height (h) of the fine lamella 20 is smaller than or equal to 2 mm.

IPC Classes  ?

• B22F 3/105 - Sintering only by using electric current, laser radiation or plasma
• B29D 30/06 - Pneumatic tyres or parts thereof
• B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process
• B29C 67/00 - Shaping techniques not covered by groups , or
• B29C 33/42 - Moulds or coresDetails thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
• B29D 30/66 - Moulding treads on to tyre casings, e.g. non-skid treads with spikes
• B60C 11/03 - Tread patterns
• B22F 5/00 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product

Abstract

Tyre having an inner and/or outer surface comprising a receiving region, an adhesive layer deposited on said receiving region and a protective film deposited on said adhesive layer, characterized in that said adhesive layer is made from a block thermoplastic elastomer (TPE) comprising an elastomer block made from a diene elastomer having a molecular (or mass) unsaturation level greater than 0%.

IPC Classes  ?

• B60C 23/04 - Signalling devices actuated by tyre pressure mounted on the wheel or tyre
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 3/04 - Carbon
• C09J 153/02 - Vinyl aromatic monomers and conjugated dienes
• C08L 53/02 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers of vinyl aromatic monomers and conjugated dienes

Abstract

The invention relates to a tire blank, said method comprising, in sequence, the steps involving: - positioning plies of rubber on a drum (2) consisting of segments (8) which are radially movable between an extended position and a collapsed position of the drum, wherein said segments form the outer circumferential surface (10) of the drum (2) of the main axis (6), - positioning bead wires - raising the edges of the plies extending axially beyond the bead wires toward the ends of the drum using blades (45) extending axially and arranged circumferentially about the main axis (6), - folding the edges of the plies using roller elements (90) separate from the drum (2) and which move in the axial direction across the circumferential surface of the drum to roll the edges of the plies up around the bead wire, - moving said blades (45) into longitudinal slots (40) extending parallel to the axis (6) at the ends of the segments (8) to raise the edges of the plies of rubber placed on the drum before folding same.

IPC Classes  ?

• B29D 30/08 - Building tyres
• B29D 30/32 - Fitting the bead-rings or bead-coresFolding the textile layers around the rings or cores
• B29D 30/48 - Bead-rings or bead-coresTreatment thereof prior to building the tyre

Abstract

The invention relates to a tyre sidewall having a rubber composition based on at least one blend of polyisoprene, natural rubber or synthetic polyisoprene, and polybutadiene BR, a reinforcing filler comprising carbon black and silica, a crosslinking system, characterized in that the reinforcing filler predominantly comprises carbon black, that the content of carbon black ranges from 20 to 30 parts per hundred parts of elastomer, phr, and the content of silica ranges from 1 to 7 phr and that the total content of reinforcing filler is less than or equal to 35 phr, the dispersion of the filler in the elastomeric matrix having a Z value greater than or equal to 75.

IPC Classes  ?

• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08J 3/20 - Compounding polymers with additives, e.g. colouring
• C08L 7/00 - Compositions of natural rubber
• C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons

Abstract

The invention relates to a modified diene elastomer comprising predominantly the entity functionalized in the middle of the chain by an alkoxysilane group, optionally partially or completely hydrolyzed to give silanol, bearing a tertiary amine functional group and the silicon atom of which bonds the two pieces of the chain, the chain ends of the modified diene elastomer being functionalized to at least 70 mol %, with respect to the number of moles of chain end, by an amine functional group.

IPC Classes  ?

• C08C 19/25 - Incorporating silicon atoms into the molecule
• C08C 19/44 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 3/36 - Silica
• C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers

Abstract

The invention relates to a modified diene elastomer comprising predominantly the entity functionalized in the middle of the chain by a silanol group, the silicon atom of which bonds the two pieces of the chain, the chain ends of the modified diene elastomer being functionalized to at least 70 mol %, with respect to the number of moles of chain end, by an amine functional group.

IPC Classes  ?

• C08C 19/25 - Incorporating silicon atoms into the molecule
• C08C 19/22 - Incorporating nitrogen atoms into the molecule
• C08C 19/44 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups of polymers containing metal atoms exclusively at one or both ends of the skeleton
• C08L 15/00 - Compositions of rubber derivatives
• B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
• C08K 3/34 - Silicon-containing compounds
• C08K 3/013 - Fillers, pigments or reinforcing additives

Abstract

A structurally supported, non-pneumatic wheel is provided. The wheel includes a hub constructed from a polymeric material, which can more readily resist deformation during an impact event and provide improvements in noise generation and manufacturing cost. A plurality of tension-transmitting web elements connect the hub with a compliant, load supporting band.

IPC Classes  ?

• B60C 7/00 - Non-inflatable or solid tyres