Patents by Inventor Jérôme Cros
Jérôme Cros has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10625819Abstract: A motorization apparatus for a motorized wheel comprises an axle secured to a frame of a vehicle. A rotor unit has poles of magnet material. A stator unit having slots and teeth secured to the axle is inward of said rotor to define a clearance gap therewith such that the rotor unit is rotatable about the stator core. An arrangement of coils is wound around the teeth of the stator unit, the coils adapted to be powered to induce a rotation of the rotor unit relative to the stator unit. A structure comprises hub portions rotatably mounted to the axle, the structure having lateral walls defining an inner volume for the rotor unit and the stator unit, the structure supporting the rotor unit. The structure comprises attachment members connected to spokes of the motorized wheel, located radially inward of the clearance gap between the rotor unit and the stator unit.Type: GrantFiled: December 3, 2018Date of Patent: April 21, 2020Assignee: BIONX CANADA INC.Inventors: Jean-martin Duhamel, Daniel Levesque, Pascal Larose, Jerome Cros
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Publication number: 20190100277Abstract: A motorization apparatus for a motorized wheel comprises an axle secured to a frame of a vehicle. A rotor unit has poles of magnet material. A stator unit having slots and teeth secured to the axle is inward of said rotor to define a clearance gap therewith such that the rotor unit is rotatable about the stator core. An arrangement of coils is wound around the teeth of the stator unit, the coils adapted to be powered to induce a rotation of the rotor unit relative to the stator unit. A structure comprises hub portions rotatably mounted to the axle, the structure having lateral walls defining an inner volume for the rotor unit and the stator unit, the structure supporting the rotor unit. The structure comprises attachment members connected to spokes of the motorized wheel, located radially inward of the clearance gap between the rotor unit and the stator unit.Type: ApplicationFiled: December 3, 2018Publication date: April 4, 2019Inventors: Jean-martin DUHAMEL, Daniel LEVESQUE, Pascal LAROSE, Jerome CROS
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Patent number: 10218249Abstract: A direct-drive brushless DC motorization apparatus is provided. The apparatus includes an outer rotor having poles constructed with segments of forty or forty-four permanent magnets alternatively magnetized north and south. The outer rotor is adapted to be part of a wheel and is rotatable with respect to an axis of the wheel. The outer rotor is mounted about a stator core of ferromagnetic material and is separated from the stator core by a clearance gap. The stator core has forty-two slots, and adjacent slots are separated by teeth. A three-phase winding with coils of insulated wire is wound around the teeth of the stator core. The three-phase winding is divided in two sets of consecutive teeth for each of the three phases, with each of the two sets of a same phase being diametrically opposed in the stator core.Type: GrantFiled: August 31, 2016Date of Patent: February 26, 2019Assignee: BIONIX CANADA INC.Inventors: Daniel Levesque, Jerome Cros
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Patent number: 10155565Abstract: A motorization apparatus for a motorized wheel comprises an axle secured to a frame of a vehicle. A rotor unit has poles of magnet material. A stator unit having slots and teeth secured to the axle is inward of said rotor to define a clearance gap therewith such that the rotor unit is rotatable about the stator core. An arrangement of coils is wound around the teeth of the stator unit, the coils adapted to be powered to induce a rotation of the rotor unit relative to the stator unit. A structure comprises hub portions rotatably mounted to the axle, the structure having lateral walls defining an inner volume for the rotor unit and the stator unit, the structure supporting the rotor unit. The structure comprises attachment members connected to spokes of the motorized wheel, located radially inward of the clearance gap between the rotor unit and the stator unit.Type: GrantFiled: March 13, 2017Date of Patent: December 18, 2018Assignee: BIONX CANADA INC.Inventors: Jean-martin Duhamel, Daniel Levesque, Pascal Larose, Jerome Cros
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Publication number: 20170183058Abstract: A motorization apparatus for a motorized wheel comprises an axle secured to a frame of a vehicle. A rotor unit has poles of magnet material. A stator unit having slots and teeth secured to the axle is inward of said rotor to define a clearance gap therewith such that the rotor unit is rotatable about the stator core. An arrangement of coils is wound around the teeth of the stator unit, the coils adapted to be powered to induce a rotation of the rotor unit relative to the stator unit. A structure comprises hub portions rotatably mounted to the axle, the structure having lateral walls defining an inner volume for the rotor unit and the stator unit, the structure supporting the rotor unit. The structure comprises attachment members connected to spokes of the motorized wheel, located radially inward of the clearance gap between the rotor unit and the stator unit.Type: ApplicationFiled: March 13, 2017Publication date: June 29, 2017Inventors: Jean-martin DUHAMEL, Daniel LEVESQUE, Pascal LAROSE, Jerome CROS
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Patent number: 9595850Abstract: A motorization apparatus for a motorized wheel comprises an axle secured to a frame of a vehicle. A rotor unit has poles of magnet material. A stator unit having slots and teeth secured to the axle is inward of said rotor to define a clearance gap therewith such that the rotor unit is rotatable about the stator core. An arrangement of coils is wound around the teeth of the stator unit, the coils adapted to be powered to induce a rotation of the rotor unit relative to the stator unit. A structure comprises hub portions rotatably mounted to the axle, the structure having lateral walls defining an inner volume for the rotor unit and the stator unit, the structure supporting the rotor unit. The structure comprises attachment members connected to spokes of the motorized wheel, located radially inward of the clearance gap between the rotor unit and the stator unit.Type: GrantFiled: May 6, 2014Date of Patent: March 14, 2017Assignee: BIONX CANADA INC.Inventors: Jena-martin Duhamel, Daniel Lévesque, Pascal Larose, Jérome Cros
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Publication number: 20170040879Abstract: A direct-drive brushless DC motorization apparatus is provided. The apparatus includes an outer rotor having poles constructed with segments of forty or forty-four permanent magnets alternatively magnetized north and south. The outer rotor is adapted to be part of a wheel and is rotatable with respect to an axis of the wheel. The outer rotor is mounted about a stator core of ferromagnetic material and is separated from the stator core by a clearance gap. The stator core has forty-two slots, and adjacent slots are separated by teeth. A three-phase winding with coils of insulated wire is wound around the teeth of the stator core. The three-phase winding is divided in two sets of consecutive teeth for each of the three phases, with each of the two sets of a same phase being diametrically opposed in the stator core.Type: ApplicationFiled: August 31, 2016Publication date: February 9, 2017Inventors: Daniel Levesque, Jerome Cros
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Publication number: 20160087491Abstract: A motorization apparatus for a motorized wheel comprises an axle secured to a frame of a vehicle. A rotor unit has poles of magnet material. A stator unit having slots and teeth secured to the axle is inward of said rotor to define a clearance gap therewith such that the rotor unit is rotatable about the stator core. An arrangement of coils is wound around the teeth of the stator unit, the coils adapted to be powered to induce a rotation of the rotor unit relative to the stator unit. A structure comprises hub portions rotatably mounted to the axle, the structure having lateral walls defining an inner volume for the rotor unit and the stator unit, the structure supporting the rotor unit. The structure comprises attachment members connected to spokes of the motorized wheel, located radially inward of the clearance gap between the rotor unit and the stator unit.Type: ApplicationFiled: May 6, 2014Publication date: March 24, 2016Inventors: Jean-martin DUHAMEL, Daniel LÉVESQUE, Pascal LAROSE, Jérôme CROS
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Publication number: 20130119809Abstract: A direct-drive brushless DC motorization apparatus comprises an outer rotor with poles constructed with segments of permanent magnet material alternatively magnetized north and south. The outer rotor is adapted to be part of a wheel and rotating with the wheel about an axis thereof. A stator core of ferromagnetic material is spaced inwardly of said rotor to define a clearance gap with the rotor such that the rotor is rotatable about the stator core. The stator core has forty-two slots and defines teeth therebetween. A three-phase winding with coils of insulated wire is wound around the teeth of the stator core. The three-phase winding is divided in two sets of consecutive teeth for each of the three phases, with each of the two sets of a same phase being diametrically opposed in the stator core.Type: ApplicationFiled: July 20, 2011Publication date: May 16, 2013Applicant: BIONX INTERNATIONAL INCInventors: Daniel Levesque, Jerome Cros
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Patent number: 7579738Abstract: The invention relates to a rotary multi-phase electrical motor wherein stator teeth corresponding to one same phase are grouped on a distinct and magnetically isolated stator section. The number of teeth per stator section is an odd number of a value of at least three and the difference between the total number of stator teeth and the number of rotor permanent magnet poles is one. The teeth are preferably equidistantly distributed along the stator. The invention also relates to a wheel motor using the rotary multi-phase electrical motor described above.Type: GrantFiled: October 31, 2005Date of Patent: August 25, 2009Assignee: Greenee Energy Inc.Inventors: Jérôme Cros, Denis Matte, Philippe Viarouge
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Publication number: 20080093950Abstract: A polyphase claw-pole armature for an electrical machine is made with several identical segments regularly distributed along the direction of motion and spaced by a magnetic air gap. The number of segments is equal or a multiple of the number of winding phases. Each segment includes a magnetic circuit with a plurality of claws arranged in a plurality of rows, with the base of each claw connected to a common yoke. One or a plurality of non-interlaced coils are included inside each segment, with the coils being wound around the bases of corresponding claws.Type: ApplicationFiled: December 9, 2004Publication date: April 24, 2008Applicant: ELECTROTECHNOLOGIES SELEM. INCInventors: Jerome Cros, Philippe Viarouge
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Publication number: 20080001492Abstract: Structures of direct current motors or ac commutator (Universal) motors which use a concentrated winding on the rotor with coils wound around the teeth. The number of commutator segments is higher than the number of rotor teeth. Several coils are wound around the same tooth. The terminals of the coils are connected to different segments of the commutator. The parallel paths of the armature winding are perfectly balanced. An equal current distribution through the parallel circuits of the armature is maintained and there is no circulation current between these parallel circuits. The problems related to commutation are reduced because the value of the coil inductances is low. The copper volume of the end-windings, the Joule losses and the axial length of the motor armature are lower than a lap or a wave winding with interlocked coils. Two kinds of structures with a concentrated winding are presented: some with rotor teeth with identical dimensions and some with rotor teeth with different dimensions.Type: ApplicationFiled: June 28, 2007Publication date: January 3, 2008Inventors: Jerome Cros, Philippe Viarouge
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Patent number: 7239060Abstract: Structures of direct current motors or ac commutator (Universal) motors which use a concentrated winding on the rotor with coils wound around the teeth. The number of commutator segments is higher than the number of rotor teeth. Several coils are wound around the same tooth. The terminals of the coils are connected to different segments of the commutator. The parallel paths of the armature winding are perfectly balanced. An equal current distribution through the parallel circuits of the armature is maintained and there is no circulation current between these parallel circuits. The problems related to commutation are reduced because the value of the coil inductances is low. The copper volume of the end-windings, the Joule losses and the axial length of the motor armature are lower than a lap or a wave winding with interlocked coils. Two kinds of structures with a concentrated winding are presented: some with rotor teeth with identical dimensions and some with rotor teeth with different dimensions.Type: GrantFiled: April 29, 2005Date of Patent: July 3, 2007Assignee: Quebec Metal Powders LimitedInventors: Jerome Cros, Philippe Viarouge
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Publication number: 20070096586Abstract: The invention relates to a rotary multi-phase electrical motor wherein stator teeth corresponding to one same phase are grouped on a distinct and magnetically isolated stator section. The number of teeth per stator section is an odd number of a value of at least three and the difference between the total number of stator teeth and the number of rotor permanent magnet poles is one. The teeth are preferably equidistantly distributed along the stator. The invention also relates to a wheel motor using the rotary multi-phase electrical motor described above.Type: ApplicationFiled: October 31, 2005Publication date: May 3, 2007Inventors: Jerome Cros, Denis Matte, Philippe Viarouge
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Patent number: 6946771Abstract: A magnetic circuit component having a plurality of claws arranged in a plurality of rows, with the base of each claw connected to a common yoke. A plurality of non-interlaced coils constituting a multi-phase winding are included, with the coils being wound around the bases of corresponding claws, and being distributed uniformly in the direction of motion.Type: GrantFiled: July 10, 2002Date of Patent: September 20, 2005Assignee: Quebec Metal Powders LimitedInventors: Jerôme Cros, Philippe Viarouge
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Publication number: 20050184612Abstract: Structures of direct current motors or ac commutator (Universal) motors which use a concentrated winding on the rotor with coils wound around the teeth. The number of commutator segments is higher than the number of rotor teeth. Several coils are wound around the same tooth. The terminals of the coils are connected to different segments of the commutator. The parallel paths of the armature winding are perfectly balanced. An equal current distribution through the parallel circuits of the armature is maintained and there is no circulation current between these parallel circuits. The problems related to commutation are reduced because the value of the coil inductances is low. The copper volume of the end-windings, the Joule losses and the axial length of the motor armature are lower than a lap or a wave winding with interlocked coils. Two kinds of structures with a concentrated winding are presented: some with rotor teeth with identical dimensions and some with rotor teeth with different dimensions.Type: ApplicationFiled: April 29, 2005Publication date: August 25, 2005Inventors: Jerome Cros, Philippe Viarouge
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Patent number: 6891304Abstract: Structures of direct current motors or ac commutator (Universal) motors which use a concentrated winding on the rotor with coils wound around the teeth. The number of commutator segments is higher than the number of rotor teeth. Several coils are wound around the same tooth. The terminals of the coils are connected to different segments of the commutator. The parallel paths of the armature winding are perfectly balanced. An equal current distribution through the parallel circuits of the armature is maintained and there is no circulation current between these parallel circuits. The problems related to commutation are reduced because the value of the coil inductances is low. The copper volume of the end-windings, the Joule losses and the axial length of the motor armature are lower than a lap or a wave winding with interlocked coils. Two kinds of structures with a concentrated winding are presented: some with rotor teeth with identical dimensions and some with rotor teeth with different dimensions.Type: GrantFiled: September 6, 2000Date of Patent: May 10, 2005Assignee: Quebec Metal Powders LimitedInventors: Jerôme Cros, Philippe Viarouge
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Patent number: 6888280Abstract: The system includes a permanent magnet three-phase motor and an electronic current controlled inverter by pulse width modulation. The motor has twenty-two poles and twenty-four slots, three phases and a cylindrical outer rotor. This structure minimizes torque ripple and maximizes energy efficiently. All coil windings are wound around the stator teeth. A winding configuration is proposed. The motor phases are supplied by alternating rectangular current waveforms. A specific inverter control system is described to maximize efficiency and reduce current ripple and electromagnetic interference under motorizing or generating operations. The current control is realized by using the MOSFETs voltage for the current measurement.Type: GrantFiled: August 26, 2003Date of Patent: May 3, 2005Inventors: Jean-Yves Dubé, Jérôme Cros, Philippe Viarouge
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Patent number: 6879237Abstract: A transformer for low frequency applications of from 50 Hz to 1000 Hz is described. The transformer comprises a core having a cylindrical symmetry around a main revolution axis. The core is formed of a soft isotropic magnetic composite material composed of iron and resin. Windings are enclosed in the magnetic core and disposed about a central column of the magnetic core and magnetically coupled with the inductor for low frequency applications, DC to 1000 Hz of similar construction is also described, the inductor comprises a core having a cylindrical symmetry around a main revolution axis. The core is formed of a soft isotropic magnetic composite material composed of iron and resin. Winding is enclosed in the magnetic core and disposed about a central column of the magnetic core and magnetically coupled with the magnetic core. The core is formed by core sections.Type: GrantFiled: September 14, 2000Date of Patent: April 12, 2005Assignee: Electrotechnologies Selem Inc.Inventors: Philippe Viarouge, Jérôme Cros
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Publication number: 20040104637Abstract: The system includes a permanent magnet three-phase motor and an electronic current controlled inverter by pulse width modulation. The motor has twenty-two poles and twenty-four slots, three phases and a cylindrical outer rotor. This structure minimizes torque ripple and maximizes energy efficiently. All coil windings are wound around the stator teeth. A winding configuration is proposed. The motor phases are supplied by alternating rectangular current waveforms. A specific inverter control system is described to maximize efficiency and reduce current ripple and electromagnetic interference under motorizing or generating operations. The current control is realized by using the MOSFETs voltage for the current measurement.Type: ApplicationFiled: August 26, 2003Publication date: June 3, 2004Applicant: Jean-Yves DubeInventors: Jean-Yves Dube, Jerome Cros, Philippe Viarouge