Abstract

A slotted, electric radial flux machine includes a stator that has a stator axis and consists of two stator parts connected by a plurality of teeth, some or all of which are surrounded by coils. The stator parts have first and second patterns, respectively, in a plane perpendicular to the stator axis. Each of the teeth surrounded by coils is an extension of one of the patterns and has a front end engaging with a receiving region of the other of the patterns in order to form a point of contact that is constrained within the plane.

IPC Classes  ?

• H02K 5/24 - CasingsEnclosuresSupports specially adapted for suppression or reduction of noise or vibrations

Abstract

A three-phase electric motor, formed by a stator part excited by three electric windings and a rotor comprising a plurality of magnetized poles, the stator part having radially extending teeth, the stator part comprising: three consecutive wound teeth, each carrying a winding, in a first angular sector, and one to three non-wound complementary teeth, in a second angular sector complementary to the first angular sector.

IPC Classes  ?

• H02K 1/14 - Stator cores with salient poles
• H02K 1/2713 - Inner rotors the magnetisation axis of the magnets being axial, e.g. claw-pole type
• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears

Abstract

A direct drive electromagnetic actuator includes a housing and a movable body extended by an actuating head. A resilient member exerts a force on the movable body toward an inoperative position. A coil interacts with the movable body so as to generate a second force on the movable body toward an operative position. The actuator further includes a shock-absorbing block movable with respect to the housing over at least a portion of the travel of the movable body and joined to the resilient member. The shock-absorbing block is compressed when the movable body is in the operative position. The actuator also includes a rigid abutment movable over at least a portion of the travel of the movable body between the inoperative position and the operative position, the rigid abutment coming into contact with a wall secured to the housing when the movable body is in the operative position.

IPC Classes  ?

• H01F 7/08 - ElectromagnetsActuators including electromagnets with armatures
• H01F 7/16 - Rectilinearly-movable armatures

Abstract

A magnetic position sensor comprises at least one magnetically sensitive element capable of moving relative to a permanent magnet producing a magnetic field, the magnet of which is embedded in a support made of soft ferromagnetic material having two pole shoes located on either side of the magnet.

IPC Classes  ?

• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
• G01B 7/00 - Measuring arrangements characterised by the use of electric or magnetic techniques

Abstract

A control device comprising at least one permanent magnet, and a mechanically guided member for enabling a relative movement between a. a first ferromagnetic structure, b. a second ferromagnetic structure comprising at least one electric coil, the electric coil modifying the magnetization state of the second ferromagnetic structure in accordance with the direction and the amplitude of the electric current flowing in the coil, the device furthermore comprising a position detection means for detecting the relative position of the first and second ferromagnetic structures, and a circuit for driving the supply current of the coil, which varies as a function of the signal delivered by the position detection means.

IPC Classes  ?

• G05G 5/03 - Means for enhancing the operator's awareness of the arrival of the controlling member at a command or datum positionProviding feel, e.g. means for creating a counterforce
• F16D 63/00 - Brakes not otherwise provided forBrakes combining more than one of the types of groups
• G05G 1/08 - Controlling members for hand-actuation by rotary movement, e.g. hand wheels
• G05G 5/04 - Stops for limiting movement of members, e.g. adjustable stop
• G05G 5/06 - Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
• G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
• G06F 3/0362 - Pointing devices displaced or positioned by the userAccessories therefor with detection of 1D translations or rotations of an operating part of the device, e.g. scroll wheels, sliders, knobs, rollers or belts
• H01F 7/02 - Permanent magnets
• G06F 3/039 - Accessories therefor, e.g. mouse pads

Abstract

A cycle driving device has a torque sensor, a crankset axle or a hub connected to a plate by a coupling, and a driving and measuring member having a first section secured in rotation with the crankset axle or hub, and a second section connected to the plate. A magnetic field source is supported by one of the sections. The coupling member incorporates a torque detection device. The first and second sections cooperate through an elastically deformable element. The torque detection device comprises a fixed magneto-sensitive element that measures a magnetic field according to the relative angular position of the first and second sections, and is capable of converting the magnetic field into an electrical signal. The magnetic field measurement is performed at a single axial position in the periphery of the first and second sections independently of the rotation of the crankset axle or hub.

IPC Classes  ?

• B62J 45/411 - Torque sensors
• B62M 6/60 - Rider propelled cycles with auxiliary electric motor power-driven at axle parts
• B62M 6/50 - Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
• G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
• B62J 45/421 - Sensor arrangementsMounting thereof characterised by mounting at the pedal crank

Abstract

An electric motor includes a cylindrical wound stator assembly forming a free interior space and a rotor assembly guided inside the interior space. The reduction gear is inside a housing secured to the stator assembly and having a movable gearing assembly. The output of the movable gearing assembly is secured to a movement output shaft. The input element of the movable gearing is driven by the rotor assembly extending inside the housing. The gear motor comprises a guide element of the output shaft. The output shaft is extended inside the motor up to a guide element located at least partly inside the stator assembly having the rotor assembly which is guided by a guide means positioned between the inner surface of the rotor assembly and a surface of the output shaft.

IPC Classes  ?

• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
• H02K 11/33 - Drive circuits, e.g. power electronics
• F16H 1/46 - Systems consisting of a plurality of gear trains, each with orbital gears
• F16H 49/00 - Other gearing
• F16H 57/021 - Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
• F16H 57/023 - Mounting or installation of gears or shafts in gearboxes, e.g. methods or means for assembly

Abstract

The present disclosure relates to a passive haptic device comprising a mechanical member moving with respect to a second mechanical member, one of the mechanical members having a plurality of magnetized zones spaced periodically according to a pitch P1, the other of the mechanical members having a second plurality of magnetized zones spaced periodically according to a pitch P2, a force that varies periodically as a function of the relative position of the mechanical members being created by the magnetic interaction between the mechanical members, the magnetic interaction varying according to a period Pt, wherein all the magnetized zones of at least one of the mechanical members are magnetized in the same sense.

IPC Classes  ?

• G08B 6/00 - Tactile signalling systems, e.g. personal calling systems
• B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism

Abstract

An electric machine comprising a first and a second three-phase winding and comprising a stator formed of a cylindrical yoke made of a soft ferromagnetic material extended radially by a set of teeth, a portion of the set of teeth bearing the windings, the windings being distinct from one another, the first three-phase winding being connected in a delta configuration, the second three-phase winding being connected in a star configuration.

IPC Classes  ?

• H02K 3/28 - Layout of windings or of connections between windings
• H02K 3/12 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
• H02P 25/18 - Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
• H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation

Abstract

A valve for controlling the circulation of a fluid, having a valve body comprising a movable control member, an electrical actuator comprising a stator and a rotor, a sealing cover extending from the valve body to the inside of the stator, the sealing cover being positioned at the interface between the rotor and the stator in such a way that the rotor is inside the cover and submerged in the fluid, the stator being isolated from the fluid, the rotor rotating about a first axis and being secured to a shaft extending along the first axis, the movable control member moving in a linear manner along a second axis or in rotation about the second axis, characterized in that the shaft has an end forming, with a toothed wheel driving the movable control member, a gear pair with non-intersecting or intersecting axes.

IPC Classes  ?

• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
• F25B 41/35 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by rotary motors, e.g. by stepping motors
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Abstract

An electric machine comprises a yoke supporting N toroidal coils and a central rotor comprising a permanent magnet. The yoke has a plurality of stator modules comprising at least one stator core made from a soft ferromagnetic material supporting at least one coil. The stator cores have, at their front ends, complementary coupling surfaces providing magnetic and mechanical continuity. The machine further comprises—a cylindrical outer casing made from a thermally conductive material, —a plurality of continuous and solid longitudinal ribs extending radially and positioned between the cylindrical outer casing and the stator modules, in order to ensure the mechanical positioning of the yoke relative to the outer casing and promote the thermal conduction of heat from the yoke toward the outer casing.

IPC Classes  ?

• H02K 1/14 - Stator cores with salient poles
• H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
• H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
• H02K 21/16 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles

Abstract

A passive haptic interface includes a first element which is rotatably movable about an axis or translatably movable along an axis, the first movable element rotating or moving opposite a second fixed element. The first movable element has a first plurality of magnetic poles spaced periodically at a pole pitch Ps and in the direction of movement, and the second fixed element has a second plurality of magnetic poles periodically spaced at a pole pitch Pr and in the direction of movement, where Ps and Pr are different numbers. A periodic stress is created by the magnetic interaction between the first movable element and the second fixed element in a period Pt. The pole pitches Ps and Pr are chosen such that Pt is strictly less than the smallest of the pitches Ps and Pr.

IPC Classes  ?

• G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
• G05G 1/08 - Controlling members for hand-actuation by rotary movement, e.g. hand wheels
• G05G 5/03 - Means for enhancing the operator's awareness of the arrival of the controlling member at a command or datum positionProviding feel, e.g. means for creating a counterforce
• G05G 5/06 - Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member for holding members in one or a limited number of definite positions only
• G05G 9/047 - Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
• H01H 19/11 - Movable partsContacts mounted thereon with indexing means

Abstract

A gear motor comprising a reduction gear train and a three-phase electric motor comprising a stator formed of a stack of sheets and 3*k electric coils and a rotor having 5 k*N pairs of magnetized poles, with k=1 or 2, the stator having two separate angular sectors alpha 1 and alpha 2, which are centered on the center of rotation of the motor and comprise an alternation of notches and 3*k*N teeth, which are regularly spaced and converge toward the center of rotation and define a cavity in which the rotor is arranged, the gear motor being characterized in that N=4 and in that alpha 1 is less than or equal to 180° and comprises all of the coils of the motor.

IPC Classes  ?

• H02K 37/16 - Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures having horseshoe armature cores
• H02K 37/24 - Structural association with auxiliary mechanical devices
• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears

Abstract

A position sensor, in particular, intended for detecting the torsion of a steering column, includes a first magnetized rotor structure comprising magnets, a second stator structure comprising two rings extended by teeth that are axially oriented and interlocked, and a third stationary collector structure including two flux collection parts that define at least one air gap in which at least one magnet-sensitive element is placed. The flux collection parts and the ring gears define a magnetic permeance independent of the relative radial and angular position of the second stator structure with respect to the third collector structure. The collection parts comprise an angular collection sector and a primary collection zone continued by a prolongation having a secondary collection zone. The secondary collection zones end in flat extensions forming two poles of the air gap. The transverse median plane of the air gap intersects at least one of the prolongations.

IPC Classes  ?

• G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
• G01L 5/22 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
• H02K 1/16 - Stator cores with slots for windings
• H02K 1/27 - Rotor cores with permanent magnets

Abstract

A position sensor, designed, in particular, for detecting torsion in a steering column, includes a first magnetized magnetic rotor structure comprising a plurality of magnets, two flux-collecting components, which define at least one air gap in which at least one magnetically sensitive element is positioned. Each collecting component has at least one primary collecting zone extended by at least one extension having at least one secondary collecting zone. The secondary collecting zones end in flattened shoes that form the two poles of the air gap. The transverse mid-plane of the air gap intersects at least one of the extensions.

IPC Classes  ?

• G01L 5/22 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
• B62D 15/02 - Steering position indicators
• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
• G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
• G01R 33/06 - Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices

Abstract

An adjustable force device comprises a member that is mechanically guided for allowing a displacement according to a predetermined trajectory, and means for magnetically indexing the displacement by the magnetic interaction between a first ferromagnetic structure and a second ferromagnetic structure integral with a magnet, wherein the magnet is at least partially surrounded by an electric coil that modifies the magnetization of the permanent magnet according to the direction and the amplitude of the electric current flowing in the coil.

IPC Classes  ?

• H02K 37/04 - Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of variable reluctance type with rotors situated within the stators
• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
• H02K 37/24 - Structural association with auxiliary mechanical devices
• E05F 5/02 - Braking devices, e.g. checksStopsBuffers specially for preventing the slamming of wings
• E05F 3/00 - Closers or openers with braking devices, e.g. checksConstruction of pneumatic or liquid braking devices

Abstract

An actuator for controlling the movement of an element between two stable positions with pulsed electrical control without a change in polarity comprises: a ferromagnetic mobile mass, at least one electrically controlled wire coil that is fixed with respect to the mobile mass, at least two ferromagnetic poles that are fixed with respect to the mobile mass and on either side of the mobile mass. The actuator comprises at least one permanent magnet that attracts the mobile mass in order to achieve the two stable positions. The mobile mass defines, with the ferromagnetic poles, at least two variable air gaps during the movement of the mobile apparatus. The magnetic flux of the permanent magnet opposes the magnetic flux generated by the at least one coil regardless of the position of the mobile mass.

IPC Classes  ?

• H01F 7/122 - Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnet
• H01F 1/14 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
• H01F 7/14 - Pivoting armatures
• H01F 7/16 - Rectilinearly-movable armatures
• H01F 7/18 - Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings

Abstract

The disclosure relates to a valve for controlling the circulation of a fluid, having a valve body and a housing containing an electric motor composed of a stator and of a rotor, a needle, a sealing bell and also a fixed screw or a fixed nut. The fixed screw or the fixed nut is secured to the valve body, and the stator is secured to the valve body via the housing. The sealing bell is positioned at the interface between the rotor and the stator in such a way that the screw/nut, the rotor and the needle are within this bell and submerged in the fluid, the stator being isolated from the fluid. Furthermore, the rotor has the function of a nut or of a screw, and has a helical movement imposed by the fixed screw or the fixed nut and drives the needle axially. The motor is a brushless polyphase motor with radial principal magnetic flux.

IPC Classes  ?

• H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
• H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
• F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
• H02K 21/16 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles

Abstract

A stator for an electric machine having a plurality of radially extending teeth, supported by an outer annular yoke radial to the teeth, at least part of the teeth supporting a coil and the outer annular yoke having flutes of partially cylindrical shape opening towards the teeth, at least part of the teeth each having, at their end, on the side of the outer annular yoke, a protuberance of partially cylindrical shape, the protuberance being held in the flute by contact points so that at least one part of the teeth performs a relative movement having a degree of rotational and/or translational freedom relative to the annular yoke.

IPC Classes  ?

• H02K 1/14 - Stator cores with salient poles

Abstract

n,i*k.

IPC Classes  ?

• H02K 41/00 - Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
• H02P 8/00 - Arrangements for controlling dynamo-electric motors rotating step by step
• H02P 8/16 - Reducing energy dissipated or supplied

Abstract

A module for detecting a rotating handle intended to be attached on a tube of a handlebar of a vehicle next to the handle includes a cylindrical magnet, a probe for detecting the magnetic field produced by the magnet, a support for the probe, a printed circuit board whereon the probe is secured, a support for the magnet and a flange used as a housing for the module. The magneto-sensitive probe detects rotation of the magnetic field emitted by the magnet and is secured to the handlebar, with the magnet and magnet holder being secured to the handle. The magnet and magnet holder form a cavity so that the inner radial surface of the magnet is positioned outside and opposite the magneto-sensitive probe. The magnet has a continuously variable magnetization direction so that the total rotation of the angle of the magnetic field generated by the magnet at the measuring point during the mechanical rotation of the handle is greater than 180°.

IPC Classes  ?

• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes

Abstract

The disclosure relates to an electric machine having a rotor including a set of permanent magnets and a stator including a stator strip made of a soft ferromagnetic material, the strip supporting a coil body having a single discontinuity, the coil body supporting a plurality of wire coils so as to form a polyphase coil stator assembly of the toroidal type, wherein the strip has a single discontinuity and has at least one partial cut at regular intervals between two consecutive wire coils.

IPC Classes  ?

• H02K 21/12 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets
• H02K 1/14 - Stator cores with salient poles
• H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies

Abstract

The disclosure relates to a rotor for an electrical machine having internal permanent magnets including a yoke consisting of a stack of sheets defining a plurality of recesses for receiving parallelepipedal permanent magnets, the recesses being surrounded by magnetically saturated external transverse isthmuses, by radial isthmuses, lateral isthmuses and oblique isthmuses, wherein the magnets are assembled in pairs of magnets magnetized in the same direction and perpendicular to the radial direction of the radial isthmuses arranged between the coupled magnets, the radial isthmuses having a thickness of less than 5% of the diameter of the rotor, and the perimeter of the cross section of the rotor is formed by a succession of curved profiles, between two consecutive pairs of magnets, and tangential linear profiles at the external transverse isthmuses. The disclosure also relates to the application of such a rotor for creating a motor, in particular a motor for a turbo compressor, or an electrical generator.

IPC Classes  ?

• H02K 1/27 - Rotor cores with permanent magnets
• H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
• H02K 1/14 - Stator cores with salient poles

Goods & Services

Engines and engine blocks (other than for engines for land vehicles); drive motors (other than for land vehicles); driving motors (other than for land vehicles); machine tools; mechanical actuators; non-electric actuators other than for firearms; valve actuators; hydraulic actuators; valves (parts of machines). Scientific, electric, electronic and optical apparatus and instruments, electromechanical indicators; electric actuators other than for firearms; valve actuators (electric controls; electro-valves; sensors, in particular position and speed sensors; electronic circuits for motor control or for exploitation of signals from a sensor; magnets; electromagnetic coils; electronic monitoring and control software for motors and engines; electric cables; magnetic cards; installation for remote control of industrial operations; counters; magnetic encoders; electrical inductors and armatures; interfaces (for computers); integrated circuits; electronic and electromechanical components; apparatus for measuring speed, position and movement; electronic and electro-optical position and speed sensors; inductors. Professional consultations in the field of mechanics and electromechanics; technical project studies; mechanical and electromechanical research; industrial design; software development; testing of materials; physics research; research and development of new products for third parties; programming for computers. Intellectual property licensing; technology licensing.

Goods & Services

Engines and engine blocks (other than for engines for land vehicles); drive motors (other than for land vehicles); driving motors (other than for land vehicles); machine tools; mechanical actuators; non-electric actuators other than for firearms; valve actuators; hydraulic actuators; valves (parts of machines). Scientific, electric, electronic and optical apparatus and instruments, electromechanical indicators; electric actuators other than for firearms; valve actuators (electric controls; electro-valves; sensors, in particular position and speed sensors; electronic circuits for motor control or for exploitation of signals from a sensor; magnets; electromagnetic coils; electronic monitoring and control software for motors and engines; electric cables; magnetic cards; installation for remote control of industrial operations; counters; magnetic encoders; electrical inductors and armatures; interfaces (for computers); integrated circuits; electronic and electromechanical components; apparatus for measuring speed, position and movement; electronic and electro-optical position and speed sensors; inductors. Professional consultations in the field of mechanics and electromechanics; technical project studies; mechanical and electromechanical research; industrial design; software development; testing of materials; physics research; research and development of new products for third parties; programming for computers. Intellectual property licensing; technology licensing.

Goods & Services

Engines and engine blocks (other than for engines for land vehicles); drive motors (other than for land vehicles); driving motors (other than for land vehicles); machine tools; mechanical actuators; non-electric actuators other than for firearms; valve actuators; hydraulic actuators; valves (parts of machines). Scientific, electric, electronic and optical apparatus and instruments, electromechanical indicators; electric actuators other than for firearms; valve actuators (electric controls; electro-valves; sensors, in particular position and speed sensors; electronic circuits for motor control or for exploitation of signals from a sensor; magnets; electromagnetic coils; electronic monitoring and control software for motors and engines; electric cables; magnetic cards; installation for remote control of industrial operations; counters; magnetic encoders; electrical inductors and armatures; interfaces (for computers); integrated circuits; electronic and electromechanical components; apparatus for measuring speed, position and movement; electronic and electro-optical position and speed sensors; inductors. Professional consultations in the field of mechanics and electromechanics; technical project studies; mechanical and electromechanical research; industrial design; software development; testing of materials; physics research; research and development of new products for third parties; programming for computers. Intellectual property licensing; technology licensing.

Abstract

The disclosure relates to a motorised air circulation valve including a gear motor, a valve body, and a rotary shaft provided with a shutter. The rotary shaft is rotated by the gear motor, where gear motor includes a set of reduction gears, a brushless electric motor formed by a rotor having N pairs of magnetised poles connected to a pinion of the set of reduction gears, and the pinion drives an output wheel rigidly connected to the rotary shaft. The electric motor includes a stator part having at least two coils, the stator part having two angular sectors, alpha1 and alpha2, of respective radii R1 and R2, with R1 being greater than R2, and the center of the radii and the angular sectors being defined relative to the center of rotation of the rotor. The angular sector alpha1 is defined by the angular deviation between the axes of the first and last coils considered in a circumferential direction of the motor, the angular sector alpha1 is less than 180° and includes the coils, the sector alpha2 is devoid of a fully fitted coil, an end of the gear motor defines a side of the gear motor, and the angular sector alpha2 of the stator part is positioned facing the side.

IPC Classes  ?

• H02K 21/16 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
• H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
• F16K 1/22 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
• F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
• H02K 1/27 - Rotor cores with permanent magnets
• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
• H02K 21/14 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
• H02K 11/33 - Drive circuits, e.g. power electronics
• F02D 9/10 - Throttle valves specially adapted thereforArrangements of such valves in conduits having pivotally-mounted flaps
• H02K 1/14 - Stator cores with salient poles
• H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
• H02K 37/14 - Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures

Abstract

The disclosure relates to a high-speed electric machine, having a speed higher than 20,000 rpm, including a rotor having 1 or 2 pairs of magnetized poles, and an enhanced stator which has an outer diameter that is larger than 18 millimeters and which has 3 or 6 straight teeth extending radially and borne by a one-piece peripheral annular collar. At least a portion of the teeth bear coils, and the teeth are rigidly connected to one another and together form a one-piece planar assembly. The coiled teeth have a rectangular cross-section of width I and of length L, with formula (I).

IPC Classes  ?

• H02K 3/20 - Windings for salient poles for auxiliary purposes, e.g. damping or commutating
• H02K 1/14 - Stator cores with salient poles
• H02K 29/03 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems

Abstract

The disclosure presents a geared motor unit including a housing having an electric motor formed of a coiled stator assembly and of a magnetized rotor, the housing further including a printed circuit board for connecting and controlling the motor, a movement-reducing gear train, a sensor magnet and a magnetosensitive probe. The gear train includes a toothed movement output gear, the sensor magnet being ring-shaped and being rigidly connected to the output gear. An output gear is extended on either side of the sensor magnet by two guides cooperating with the two opposite walls of the housing; a ring-shaped magnet surrounds the axis of rotation of the output gear; a printed circuit board includes a controller controlling the motor and extends up to the vicinity of the output gear. The printed circuit board includes, in the area located in the vicinity of the output gear, the magnetosensitive probe which is connected directly, electrically and mechanically, to the area and is located axially or radially facing a ring-shaped magnet.

IPC Classes  ?

• H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
• F02D 11/10 - Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
• H02K 11/38 - Control circuits or drive circuits associated with geared commutator motors of the worm-and-wheel type
• F02D 9/10 - Throttle valves specially adapted thereforArrangements of such valves in conduits having pivotally-mounted flaps

Abstract

A rotary actuator with a moving frame includes an electrical coil that moves on an angular travel about an axis of rotation A, the shape of the coil being an elliptical cylinder and the axis of winding B being orthogonal to the axis of rotation A, the coil being placed in the magnetic field of a fixed magnet. The fixed magnet surrounds the coil and includes two semicylindrical portions, the generatrices of which are orthogonal to the axis of rotation A, the first of the semicylindrical portions having a north pole directed toward the coil, orthogonally to the direction of the generatrices and being positioned outside the coil, the second having a south pole directed toward the coil, orthogonally to the direction of the generatrices and also being positioned outside the coil opposite the first portion. The actuator includes a ferromagnetic core inside the coil and an outer ferromagnetic yoke surrounding the fixed magnet, the coil moving in the air gap formed between the magnetized semicylindrical portions and the inner core.

IPC Classes  ?

• H02K 33/18 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
• H02K 11/21 - Devices for sensing speed or position, or actuated thereby

Abstract

A linear electromagnetic actuator has a stroke c, with at least one stable position in one of the ends of the stroke, and includes: an armature made of a soft magnetic material, the armature being movable in an axial direction Y and having a length Hm in the direction Y, the armature having a symmetrical shape at the axis Y, and a stationary stator yoke made of a soft magnetic material and holding at least one electric coil. The actuator also includes at least one stationary permanent magnet that is magnetized along a transverse axis X perpendicular to the direction Y. The magnet is transversely placed between the movable armature and the electric coil. The magnet has a length Ha in the direction Y. The stationary yoke and the movable armature define therebetween at least one axial air gap. Ha+c is of the order of magnitude of Hm. The length Hm is such that 0.9×(Ha+c)

IPC Classes  ?

• H01F 7/08 - ElectromagnetsActuators including electromagnets with armatures
• H01F 7/16 - Rectilinearly-movable armatures
• H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
• H01H 33/666 - Operating arrangements

Abstract

A linear electromagnetic actuator includes a stator excited by at least one electric coil arranged around an axis of symmetry and two ferromagnetic stator poles positioned axially on either side of the coil, as well as at least two independent moving members, each of the moving members being formed of a ferromagnetic material, where the linear electromagnetic actuator includes at least three magnetized poles arranged inside the coil, with respectively a first magnetized pole positioned in the vicinity of the median plane separating the two moving members and containing the axis of the coil, and a second and third magnetized pole arranged laterally on either side of the moving members, between the moving members and the coil.

IPC Classes  ?

• H02K 1/34 - Reciprocating, oscillating or vibrating parts of the magnetic circuit
• H02K 11/00 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
• H02K 33/12 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems
• H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
• H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements

Abstract

An electrical machine includes a tubular rotor magnetised to have circumferential polar alternations, and a stator including a body that is traversed by a channel having an inner transverse section that substantially corresponds to the outer transverse section of the rotor, the body carrying a plurality of windings, the stator being surrounded by an outer ferromagnetic envelope, the body being extended by three, four or six radial projections made from an electrically insulating material having, in the transverse cross section, a longitudinal core for receiving a winding, the core being extended by a peripheral extension having an outer surface that matches the inner surface of the envelope and covers the wound area. A method for producing such an electrical machine is also provided.

IPC Classes  ?

• H02K 3/46 - Fastening of windings on the stator or rotor structure
• H02K 1/14 - Stator cores with salient poles
• H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
• H02K 3/52 - Fastening salient pole windings or connections thereto
• H02K 1/27 - Rotor cores with permanent magnets
• H02K 3/04 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
• H02K 15/00 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
• H02K 15/03 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets

Abstract

The present disclosure relates to a mechatronic assembly for positioning a member including a control unit and an actuator, the control unit including a control algorithm and a power bridge, the algorithm controlling the power bridge, the power bridge outputting a two-wire electric signal, the actuator including a polyphase brushless electric motor having N phases (N being or higher), binary probes for detecting the position of the rotor of the motor, and power switches suitable for supplying the N phases of the motor from the two-wire electric signal, and states of the power switches is controlled directly by a signal emitted by the detection probes.

IPC Classes  ?

• F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
• G05B 1/03 - Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric for comparing digital signals
• G05B 1/02 - Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric for comparing analogue signals
• F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
• G05D 7/06 - Control of flow characterised by the use of electric means
• H02P 6/34 - Modelling or simulation for control purposes
• H02P 6/30 - Arrangements for controlling the direction of rotation
• H02P 6/15 - Controlling commutation time

Abstract

The present disclosure relates to a mono- or polyphase electric motor including a stator carrying at least three coils and consisting of 12×N straight teeth extending radially, N being an integer greater than or equal to 1, and of an equal peak divergence alpha, measured at their end from the center of the motor, and a rotor exhibiting P pairs of magnetized poles such that P=5+2×R, P being a non-multiple of three, R being an integer greater than or equal to 0, alpha lying between 360°(12×N)/3 and 360°(12×N)/2.

IPC Classes  ?

• H02K 1/14 - Stator cores with salient poles
• H02K 29/03 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
• H02K 1/27 - Rotor cores with permanent magnets
• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears

Abstract

L1.

IPC Classes  ?

• H02K 41/00 - Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
• H02K 41/02 - Linear motorsSectional motors
• H02K 41/03 - Synchronous motorsMotors moving step by stepReluctance motors

Abstract

A positioning assembly includes a position sensor and a magnetic actuator, the actuator including a stator assembly formed of at least one ferromagnetic stator bearing at least one electric power supply coil and a yoke able to move relative to the stator assembly, the actuator having a geometry that is of revolution or periodic about an axis referred to as the main axis passing through the yoke, the sensor having at least one permanent magnet secured to the yoke and at least one magneto-sensitive probe that is fixed in relation to the magnet and able to measure the amplitude or direction of the magnetic field emitted by the magnet. The yoke has an interior recess including the main axis of the actuator, and the magnet is positioned inside the recess and secured to the yoke.

IPC Classes  ?

• H02K 41/02 - Linear motorsSectional motors
• H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
• H02K 33/12 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moving in alternate directions by alternate energisation of two coil systems
• H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements

Abstract

An electromagnetic actuator includes a stator unit having N poles having the width LP, and at least one coil surrounding one of the poles, wherein N≦3, and a magnetic portion, which is movable, relative to the stator unit, in a direction of relative movement and over a course of travel C, and including N+1 magnetized areas, the magnetizations of which are perpendicular to the relative movement direction and in alternate directions. The magnetic portion includes a yoke for closing off the magnetic fluxes passing through the magnetized areas, the course of travel C of the magnetic portion being less than or equal to the width LP of each pole, and the thickness of the magnetized areas perpendicular to the direction of movement being less than the course of travel C of the magnetic portion.

IPC Classes  ?

• H02K 33/18 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
• H02K 35/02 - Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
• H02K 7/065 - Electromechanical oscillatorsVibrating magnetic drives
• H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
• B26B 19/38 - Details of, or accessories for, hair clippers or dry shavers, e.g. housings, casings, grips or guards

Abstract

The disclosure relates in particular to a method for parameterizing a system for measuring an absolute position, the system including a permanent magnet, at least one probe that is mobile relative to the magnet over a given path, and a controller providing position information calculated on the basis of the arctangent of the ratio, wherein a correction coefficient G is assigned, between the output signals of the probe, wherein the signals are pseudo-sinusoidal and squared. The method includes an optimization operation that involves selecting the value of the coefficient G that minimizes the errors of the measurement system resulting from the pseudo-sinusoidal character of the signals output from the probe.

IPC Classes  ?

• G01C 9/00 - Measuring inclination, e.g. by clinometers, by levels
• G01B 7/14 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
• G01D 5/244 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains
• G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre

Abstract

The disclosure relates to a magnetic device for detecting the absolute position of an input shaft capable of rotating more than 360°, the device including a main magnetic sensor, a motion reducer, and a secondary magnetic sensor, wherein the main magnetic sensor is connected to a rotor, measures the rotation of the shaft for ranges of angles of less than 360°, and includes a main magnet, the motion reducer converts the rotation of the shaft into a reduced rotation, the maximum amplitude of which is equal to no more than 360°, and the secondary magnetic sensor measures the reduced rotation and includes a secondary magnet. According to the disclosure, the secondary magnet is arranged between the upper and lower planes of the main rotor, and the main magnet has P pairs of poles, where P is greater than 1.

IPC Classes  ?

• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
• G01D 5/245 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
• G01D 5/244 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains
• G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating

Abstract

The disclosure relates to an indicator device that can be used on an instrument panel comprising two electric motors, two concentric shafts, a visual information member moved in translation by one of the shafts in a transverse direction relative to the axis of rotation of the shaft, and a guide member that is rotatably linked to the other shaft, rotates the visual information member with itself, and guides the visual information member in translation in the transverse direction. According to the disclosure, the two shafts are concentric, the visual information member is self-supporting, and the visual information member is longer than the guide member in the transverse direction.

IPC Classes  ?

• G01D 7/00 - Indicating measured values
• G01D 7/10 - Indicating value of two or more variables simultaneously using a common indicating element for two or more variables giving indication in co-ordinate form
• G01D 13/22 - Pointers, e.g. settable pointer

Abstract

The disclosure relates to a magnetic position sensor in at least two directions, the sensor including at least one magnetized element and a probe including at least two magneto-sensitive elements located substantially on the same point and each measuring one of the components of the magnetic field generated by the magnetized element, the magnetized element being movable relative to the magneto-sensitive elements. The probe includes at least one processing circuit capable of carrying out angle and module calculations on the basis of algebraic combinations of the components of the magnetic field and providing at least two independent signals representing the position of the movable element along, respectively, one and the other of the two directions. According to the disclosure, the magnetization vector of the magnetized element is variable in relation to the normal vector on the surface of the magnetized element that is placed opposite the probe in at least one of the dimensions of the magnetized element so as to define a single position of the probe in relation to the magnetized element.

IPC Classes  ?

• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage

Abstract

The invention relates to an angular or linear magnetic position sensor that comprises a mobile member including at least one magnet (1) having a magnetization direction that varies linearly along the movement direction of the magnet in a surface defined by said movement direction and in a normal direction, at least four magneto-sensitive elements (2, 3 and 4, 5) and at least one processing circuit (6) providing a signal based on the absolute position of the mobile member, characterized in that a first set of magneto-sensitive elements (2, 3) and (4, 5) are located at a same point, the first couple of magneto-sensitive elements (2, 3) being spatially offset from a second couple of magneto-sensitive elements (4, 5) along the movement direction, and in that the magneto-sensitive elements (3 and 5) measure the tangential component of the magnetic field while the magneto-sensitive elements (2 and 4) measure the normal component of the magnetic field in order to provide, after algebraic combination of the components taken in pairs, two sinusoidal signals substantially having an electrical phase shift of 90°.

IPC Classes  ?

• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
• G01B 7/14 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures

Abstract

The disclosure relates to a magnetic position sensor including at least one permanent magnet. The disclosure also relates to a magnetic device for detecting a torque between a first shaft and a second shaft that are connected via a torsion bar. The aim of the disclosure is to provide a device for determining the multi-periodic absolute position of a magnetized unit. The subject of the disclosure is therefore a magnetic position sensor including at least the following: a magnetized unit, a first magnetosensitive probe and a second magnetosensitive probe. The second magnetosensitive probe is capable of measuring a number of complete rotations of the magnetic field in an absolute, incremental and reversible manner so as to determine a second datum relating to the position of the magnet, whether or not this second magnetosensitive probe is powered. The sensor further includes a module for calculating the absolute position of the magnet on the basis of the first and second data coming from the first and second probes respectively.

IPC Classes  ?

• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
• G01D 5/249 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using pulse code
• B62D 6/10 - Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to input torque characterised by the means for sensing torque
• B62D 15/02 - Steering position indicators

Abstract

The disclosure relates to a contactless magnetic sensor for measuring the angular or linear movement of a ferromagnetic target. The purpose of the disclosure is to make a position sensor having reduced dimensions and capable of detecting a piece of position information as soon as the sensor is powered without degrading the performance thereof. To this end, the disclosure relates to a mobile sensor that includes at least one permanent magnet, at least one ferromagnetic member at least one magnetically sensitive member, the permanent magnet having an upper surface opposite the ferromagnetic target, wherein the permanent magnet has a substantially cylindrical or parallelepiped shape and includes a cavity, the ferromagnetic member being arranged inside the cavity and the magnetically sensitive member being arranged inside the cavity above the ferromagnetic member and below the upper surface of the magnet.

IPC Classes  ?

• G01B 7/14 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
• G01R 33/06 - Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
• H01L 43/06 - Hall-effect devices
• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage

Abstract

The present disclosure relates to a magnetic position sensor with field direction measurement and a flux collector. The disclosure proposes to measure two magnetic induction components at one and the same point, harmonizing the amplitude of the two magnetic induction components using flux collectors so as to have a ratio of the amplitudes of these two components close to one. For this purpose, the disclosure provides a contactless position sensor including at least one permanent magnet, emitting a magnetic field, at least one detection element sensitive to the direction of the magnetic field, and at least one pair of flux collectors, the permanent magnet being capable of moving in a direction of displacement and having a direction of magnetization that can be continuously varied according to the direction of displacement. Each flux collector has at least one portion, provided with an end, extending substantially along the direction of displacement of the magnet. The ends of a pair of flux collectors define a gap oriented along the direction of displacement of the magnet. The detection element is positioned outside the gap and substantially equidistant from the ends.

IPC Classes  ?

• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage

Abstract

An angular position sensor includes a moving element consisting of at least one essentially cylindrical permanent magnet turning about it axis, at least two magnetosensitive elements and at least one processing circuit furnishing a signal dependent on the absolute position of the moving element The magnetosensitive elements are located essentially at the same point and in that they measure the tangential component of the magnetic field and the radial and/or axial component of the magnetic field for furnishing 2 sinusoidal signals that are essentially 90° out of phase.

IPC Classes  ?

• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes

Abstract

The invention relates to a gear motor including a multiple-phase electric motor formed by a stator portion excited by electric coils and by a rotor having N pairs of poles radially magnetised in alternating directions, the stator portion including two angular sectors alpha-1 and alpha-2 with respective radii R1 and R2, and wide teeth and narrow teeth radially extending from an annular crown, characterized in that the wide teeth have a width higher than or equal to twice the width of the narrow teeth, in that the notch width is higher than the width of a narrow tooth, in that the angular sector alpha-1 is lower than 220° and includes all the coils, and in that the ratio R1/R2 ranges from 1.2 to 2.

IPC Classes  ?

• H02K 37/04 - Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of variable reluctance type with rotors situated within the stators

Abstract

The invention relates to a magnetic position sensor comprising at least one permanent magnet. The invention also relates to a magnetic device for detecting a torque between a first shaft and a second shaft that are connected via a torsion bar. The aim of the invention is to provide a device for determining the multi-periodic absolute position of a magnetized unit. The subject of the invention is therefore a magnetic position sensor (A) comprising at least the following: a magnetized unit (1), a first magnetosensitive probe (2) and a second magnetosensitive probe (3). The second magnetosensitive probe (3) is capable of measuring a number of complete rotations of the magnetic field in an absolute, incremental and reversible manner so as to determine a second datum relating to the position of the magnet (1), whether or not this second magnetosensitive probe (3) is powered. The sensor further includes a module for calculating the absolute position of the magnet (1) on the basis of the first and second data coming from the first and second probes (2, 3) respectively.

IPC Classes  ?

• G01D 5/249 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using pulse code
• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
• B62D 6/10 - Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to input torque characterised by the means for sensing torque

Abstract

The invention relates to a three-phase electric motor that uses high magnetic energy permanent magnets and that has a low detent torque. The motor consists of a rotor (2) with N pairs of poles and of a stator portion (1) with teeth (11 to 16) extending radially from an annular gear (10). The teeth have windings (41 to 43) and the ends thereof comprise an arc of circle (17), the middle of which is located on a radius R1 and two sides (18 and 19) defining an alpha angle, the vertex of which is located on a radius R2. The ratio R2/R1 is substantially equal to (1 +/- 0.26/N), and the alpha angle is between 110 and 135°.

IPC Classes  ?

• H02K 1/14 - Stator cores with salient poles
• H02K 29/03 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems

Abstract

n>1.

IPC Classes  ?

• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
• G01D 5/245 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
• B62D 1/00 - Steering controls, i.e. means for initiating a change of direction of the vehicle
• B62D 15/02 - Steering position indicators
• B62D 21/00 - Understructures, i.e. chassis frame on which a vehicle body may be mounted
• B62D 47/00 - Motor vehicles or trailers predominantly for carrying passengers

Abstract

The present invention relates to a magnetic position sensor with field direction measurement and flux collector. The invention proposes to measure two magnetic induction components at one and the same point, harmonizing the amplitude of the two magnetic induction components using flux collectors so as to have a ratio of the amplitudes of these two components close to one. For this purpose, the invention provides a contactless position sensor comprising at least one permanent magnet (1), emitting a magnetic field, at least one detection element (3) sensitive to the direction of the magnetic field, and at least one pair of flux collectors (2a, 2b), the permanent magnet (1) being capable of moving in a direction of displacement and having a direction of magnetization that can be continuously varied according to the direction of displacement. Each flux collector (2a, 2b) has at least one portion, provided with an end (8, 9), extending substantially along the direction of displacement of the magnet (1). The ends (8, 9) of a pair of flux collectors (2a, 2b) define a gap (7) oriented along the direction of displacement of the magnet (1). The detection element (3) is positioned outside said gap (7) and substantially equidistant from the ends (8) and (9).

IPC Classes  ?

• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage

Abstract

The invention relates to a contactless magnetic sensor for measuring the angular or linear movement of a ferromagnetic target. The purpose of the invention is to make a position sensor having reduced dimensions and capable of detecting a piece of position information as soon as the sensor is powered without degrading the performance thereof. To this end, the invention relates to a mobile sensor (4) that comprises at least one permanent magnet (1), at least one ferromagnetic member (2) at least one magnetically sensitive member (3), the permanent magnet having an upper surface opposite the ferromagnetic target (4), wherein the permanent magnet has a substantially cylindrical or parallelepiped shape and comprises a cavity (5), the ferromagnetic member (2) being arranged inside the cavity (5) and the magnetically sensitive member being arranged inside the cavity (5) above the ferromagnetic member (2) and below the upper surface of the magnet (1).

IPC Classes  ?

• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage

Abstract

The invention relates to a magnetic angular or linear sensor including at least one permanent magnet defined in a cylindrical (r, Q & z) or Cartesian (x, y & z) coordinate system and at least two magneto-sensitive elements, in which the magnet can move in relation to said two magneto-sensitive elements. The invention is characterized in that at least one dimension of the magnet varies as a non-constant function and in that the magnetization of the magnets is oriented in a single direction, i.e. x, y or z in the case of a magnet defined in a Cartesian coordinate system or r, Q or z in the case of a magnet defined in a cylindrical coordinate system.

IPC Classes  ?

• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
• G01B 7/14 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures

Abstract

The invention relates to an angular or linear magnetic position sensor that comprises a mobile member including at least one magnet (1) having a magnetisation direction that varies linearly along the movement direction of the magnet in a surface defined by said movement direction and in a normal direction, at least four magneto-sensitive elements (2, 3 and 4, 5) and at least one processing circuit (6) providing a signal based on the absolute position of the mobile member, characterised in that a first set of magneto-sensitive elements (2, 3) and (4, 5) are located at a same point, the first couple of magneto-sensitive elements (2, 3) being spatially offset from a second couple of magneto-sensitive elements (4, 5) along the movement direction, and in that the magneto-sensitive elements (3 and 5) measure the tangential component of the magnetic field while the magneto-sensitive elements (2 and 4) measure the normal component of the magnetic field in order to provide, after algebraic combination of the components taken in pairs, two sinusoidal signals substantially having an electrical phase shift of 90°.

IPC Classes  ?

• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage

Abstract

The invention relates to an absolute position magnetic sensor for measuring the angular position, on a theta course, of a shaft passing through said sensor and comprising at least two systems for detecting the position of the shaft. Said invention is characterised in that: at least one of the detection systems generates a signal according to a "periodical" function of the theta/n period giving the periodical angular position of said shaft; at least one of the detection systems generates an absolute signal on a theta course of the shaft; and theta and n fit the equation: * theta/n = 360 * n > 1.

IPC Classes  ?

• G01D 5/245 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trainsMechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
• B62D 15/02 - Steering position indicators
• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage

Abstract

The invention relates to a gear motor including a multiple-phase electric motor formed by a stator portion excited by electric coils and by a rotor having N pairs of poles radially magnetised in alternating directions, the stator portion including two angular sectors alpha-1 and alpha-2 with respective radii R1 and R2 comprising wide teeth and narrow teeth radially extending from an annular crown, characterised in that the wide teeth have a width higher than or equal to twice the width of the narrow teeth, in that the notch width is higher than the width of a narrow tooth, in that the angular sector alpha-1 is lower than 220° and includes all the coils, and in that the ratio R1/R2 ranges from 1.2 to 2.

IPC Classes  ?

• H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
• H02K 29/06 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
• H02K 21/16 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles

Abstract

The invention relates to a magnetic angular or linear sensor including at least one permanent magnet (1) defined in a cylindrical (r, Q & z) or Cartesian (x, y & z) coordinate system and at least two magneto-sensitive elements (2 and 3), in which the magnet (1) can move in relation to said two magneto-sensitive elements (2 and 3). The invention is characterised in that at least one dimension of the magnet (1) varies as a non-constant function and in that the magnetisation of the magnets (1) is oriented in a single direction, i.e. x, y or z in the case of a magnet defined in a Cartesian coordinate system or r, Q or z in the case of a magnet defined in a cylindrical coordinate system.

IPC Classes  ?

• G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage

Abstract

The present invention relates to a polyphase motor, especially for applications for driving pumps or ventilators in the automobile industry, formed by a stator part (1) excited by electric coils (41 to 46) and by a rotor (2) exhibiting N pairs of poles that are magnetised radially in alternate senses, the stator part (1) exhibiting wide teeth (11 to 16) and narrow teeth (17 to 22) extending radially from an annular ring (10). The wide teeth carry the coil windings and the distance between a wide tooth and a narrow tooth is greater than the width of a narrow tooth.

IPC Classes  ?

• H02K 29/03 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
• H02K 1/14 - Stator cores with salient poles
• H02K 21/16 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles

Abstract

The present invention relates to a magnetic sensor of rotary, linear or curvilinear displacement using at least one permanent magnet and at least one magnetosensitive element, which can move with respect to one another, characterized in that the magnet exhibits a direction of magnetization that varies continuously along the direction of displacement, with the exclusion of a diametral magnetization in the case of a rotary sensor.

IPC Classes  ?

• G01B 7/00 - Measuring arrangements characterised by the use of electric or magnetic techniques
• G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes

Abstract

The invention relates to a position sensor, in particular for detecting a steering column twist consisting of a first magnetic rotoric structure (10) comprising a plurality of radially oriented magnets and a second statoric structure (20) comprising two concentric gear rings (23, 24) extended by radially oriented teeth (25, 26), wherein said rotoric structure (10) is substantially disc-shaped and consists of a ferromagnetic head supporting said plurality of magnets, the statoric structures (22, 24) are provided with interleaving teeth and the inventive position sensor comprises a third collector structure (30) consisting of two flow closing parts (31,32), one of which is fixed, and which define at least one air gap in which at least one magnetosensitive element (50) is arranged.

IPC Classes  ?

• G01L 5/22 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
• G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating