Patents Examined by Naishadh N Desai
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Patent number: 11909336Abstract: The present disclosure relates to an actuator. The actuator includes at least two iron cores, each iron core including a pole extending in a first direction parallel to a direction of gravity; a permanent magnet disposed between the at least two iron cores so as to generate a magnetic field along a shape of a combination of the at least two iron cores arranged so as to be adjacent to each other in a direction not parallel to the first direction; and a winding wound around the pole of each of the at least two iron cores.Type: GrantFiled: July 13, 2022Date of Patent: February 20, 2024Assignee: UNIVERSITY INDUSTRY FOUNDATION, YONSEI UNIVERSITYInventors: JunYoung Yoon, JaeWoo Jung, EunKyu Kim, HyeongMin Yoon
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Patent number: 11909292Abstract: A moving coil brushless motor including an actuator having a stator and a rotor. The stator includes a cylindrical array of permanent magnets. The rotor includes a coil assembly having a plurality of coils interposed between a stator back plate and the permanent magnet array. The coil assembly rotates relative to the array of permanent magnets. A center shaft is disposed to rotate about a longitudinal axis. A cylindrical transformer is disposed within an interior space circumscribed by the stator back plate and includes a primary side and a secondary side. The primary side includes a primary coil and the secondary side includes a secondary coil magnetically coupled to the primary coil. Primary electronics are in communication with secondary electronics attached to the center shaft. The secondary electronics are configured to receive power from the secondary coil and to provide current to the actuator.Type: GrantFiled: October 8, 2021Date of Patent: February 20, 2024Assignee: Systems, Machines, Automation Components CorporationInventors: Edward A. Neff, Koen Bastiaens, Dave C. J. Krop, Elena A. Lomonova, Toan Minh Vu, Reyhan Zanis
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Patent number: 11909264Abstract: A hybrid switched reluctance motor is provided that reduces torque ripple. A novel rotor design includes flux barriers. The flux barriers are positioned and shaped to create implicit saliency and reluctance torque for the motor. A gradual change in the motor reluctance results which avoids rapid increases in flux density. The rotor also increases efficiency by reducing acoustical and vibrational responses and associated energy loses.Type: GrantFiled: July 14, 2021Date of Patent: February 20, 2024Assignee: Board of Regents, The University of Texas SystemInventors: Babak Fahimi, Seyed Ehsan Movahed Mohammadi, Mehdi Moallem
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Patent number: 11901769Abstract: A stator includes a plurality of same laminations each defining a piloting tab on a perimeter thereof, and stacked to form a stator body and such that the piloting tabs define at least two axially extending serrated edge portions spaced apart from one another around a perimeter of the stator body or at least two sets of axially aligned housing contact pads spaced apart from one another around the perimeter.Type: GrantFiled: January 27, 2022Date of Patent: February 13, 2024Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Franco Leonardi, Brian Christian Orr, Joel Hetrick
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Patent number: 11894740Abstract: System and method for robust sensorless control of permanent magnet assisted synchronous reluctance (PM-SyR) motor. The system and method includes startup control of a motor with known rotor position/speed, but unknown rotor magnetic polarity of a motor exhibiting rotor magnetic anisotropy or saliency. The system and method includes a rotor characteristic detection method for a PM-SyR motor that detects rotor magnetic polarity based on the variation of the inductance that is caused by the leakage flux paths in the rotor barrier bridges and utilizes the detected rotor magnetic polarity for improved motor startup.Type: GrantFiled: August 15, 2023Date of Patent: February 6, 2024Assignee: Wolong Electric Group Ltd.Inventors: Radu Bojoi, Zheng Zhang, Dingsheng Lin, Song Chi, Liyang Sun, Weican Yan
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Patent number: 11894753Abstract: A deceleration mechanism is provided with first and second gears, a first tooth part arranged in the first gear and extending spirally in an axial direction of the first gear, an engagement projected part arranged on the first tooth part, second tooth parts arranged on the second gear, and an engagement recessed part arranged between the adjacent second tooth parts. The engagement projected part is formed in an arc shape in a direction orthogonal to the axial direction of the first gear and has a curvature center eccentric from a rotation center of the first gear. The second tooth parts are inclined with respect to the axial direction of the first gear and arranged in a circumferential direction of the second gear. The engagement projected part is formed in an arc-shape in a direction orthogonal to the axial direction of the first gear and engaged with the engagement projected part.Type: GrantFiled: April 3, 2019Date of Patent: February 6, 2024Assignee: MITSUBA CorporationInventors: Naoki Kojima, Motoaki Kobayashi, Teppei Tokizaki, Yoshichika Kawashima
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Patent number: 11894752Abstract: A brushless direct current motor of an electrical machining device includes a stator, a rotor, a fan and a flywheel. The rotor, the fan and the flywheel are arranged for conjoint rotation on a motor shaft of the brushless direct current motor. The flywheel is at least partly surrounded axially along the motor shaft by the fan. The brushless direct current motor may be incorporated in a hand-held power tool.Type: GrantFiled: January 21, 2020Date of Patent: February 6, 2024Assignee: Robert Bosch GmbHInventors: Joachim Heizmann, Andreas Voelkle, Sebastian Laber
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Patent number: 11894748Abstract: An electric motor vehicle traction motor, including: a liquid-cooled motor stator, a dry-running motor rotor, and a fluid-tight split cage which separates the motor stator and the motor rotor from one another fluidically, the split cage being formed by a fiber composite body, wherein the split cage is axially prestressed in a long-lasting manner by a split cage axial stressing apparatus.Type: GrantFiled: May 25, 2022Date of Patent: February 6, 2024Assignee: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFTInventors: Stefan Oechslen, Christian Koenen
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Patent number: 11894785Abstract: An integrated flexible self-charging power supply for energy harvesting in an agricultural environment and a preparation method thereof are provided, wherein the integrated flexible self-charging power supply for the energy harvesting in the agricultural environment includes polydimethylsiloxane (PDMS) and a graphene electrode entirely encapsulated in the PDMS, where the graphene electrode includes a power generation portion and an interdigital portion; the power generation portion and the interdigital portion are integrally encapsulated in the PDMS; the interdigital portion is covered with a solid electrolyte; two ends of the interdigital portion of the graphene electrode are led out by wires to serve as two output ends of the power supply.Type: GrantFiled: August 13, 2020Date of Patent: February 6, 2024Assignee: ZHEJIANG UNIVERSITYInventors: Jianfeng Ping, Xunjia Li, Yibin Ying
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Patent number: 11888348Abstract: Provided is a stator for an electrical machine including a plurality of segments, wherein in order to reduce torque harmonics and power harmonics due to the interposed circumferential gap between two circumferentially adjacent stator segments, at least one of the two end teeth of each stator segment includes a circumferential protrusion at the respective tooth radial end, the circumferential protrusion protruding from the respective side face towards the respective circumferential end.Type: GrantFiled: October 18, 2019Date of Patent: January 30, 2024Inventors: Ziad Azar, Richard Clark, Alexander Duke, Arwyn Thomas
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Patent number: 11888360Abstract: A brush motor includes: a rotor core provided in a rotor; s teeth provided in the rotor core; s concentrated-winding coils with electric wires being respectively wound around the teeth; a commutator provided on the rotor in a relatively non-rotatable manner; c commutator pieces provided in the commutator and connected to the coils; p pairs of magnet magnetic poles provided on a stator and arranged to face the teeth; and a brush that is brought into sliding contact with the commutator pieces to supply a current to the coils, in which 0.5<p/s<1 and s<c.Type: GrantFiled: April 27, 2022Date of Patent: January 30, 2024Assignee: MABUCHI MOTOR CO., LTD.Inventor: Tadayuki Wakita
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Patent number: 11881745Abstract: A stator of an electric machine includes: a laminated stator core having sheet-metal blanks which have apertures, the apertures being closed radially on an inside thereof by a web when viewed in a cross section extending in a radial direction of the stator; and stator windings, which are accommodated in the apertures of the laminated stator core. The web which closes a respective aperture radially on the inside is plastically deformed so as to introduce a mechanical stress into the web.Type: GrantFiled: May 11, 2022Date of Patent: January 23, 2024Inventors: Michael Reinlein, Thomas Hubert
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Patent number: 11876415Abstract: The present invention relates to an electric machine for an aircraft, comprising a stator and a rotor that is rotationally mobile with respect to the stator, the rotor or the stator comprising a plurality of permanent magnets, the machine comprising a device for demagnetising a permanent magnet, suitable for achieving a temporary increase in the temperature of the permanent magnet, in order to limit, during the temporary increase in temperature, an exciting magnetic flux generated by the permanent magnet. The present invention furthermore relates to an assembly comprising an assembly comprising such an electric machine and a hot-fluid source suitable for delivering hot fluid to the demagnetising device of the electric machine. The hot-fluid source may be a gas stream of a turbine engine.Type: GrantFiled: December 19, 2019Date of Patent: January 16, 2024Assignee: SAFRAN HELICOPTER ENGINESInventors: Camel Serghine, Thomas Klonowski, Loïs Pierre Denis Vive
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Patent number: 11876420Abstract: In a motor, a wire terminal, to which an end at an end of winding of a wire is connected, is held by an insulator that is held by a stator core. The wire terminal comprises: a substrate connection section; plural legs held by a split insulator; a plate section, a thickness direction of which faces a radial direction, between the legs and the substrate connection section; and a wire connection section, a portion of which projected from the plate section is bent to hold the wire on an inner side. An elastic section is a meandering section meandering to turn back in a circumferential direction between the plate section and the substrate connection section, and extends from an end on another side in the circumferential direction of the plate section toward the substrate connection section.Type: GrantFiled: December 23, 2021Date of Patent: January 16, 2024Assignee: NIDEC SANKYO CORPORATIONInventors: Takashi Yamamoto, Takehiko Yazawa
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Patent number: 11876413Abstract: The present disclosure in some embodiment provides a hybrid induction motor including dual stators. According to at least one embodiment, the present disclosure provides a hybrid induction motor including a hollow rotor including a single conductor bar which is annularly disposed and spaced apart from a rotation axis by a predetermined distance, an outer stator having an outer stator winding disposed in parallel with an outer circumferential surface of the hollow rotor, and an inner stator having an inner stator winding disposed in parallel with an inner circumferential surface of the hollow rotor.Type: GrantFiled: February 18, 2022Date of Patent: January 16, 2024Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Myung Seop Lim, Jae Hyun Kim, Sung Woo Hwang, Jin Cheol Park, Jin Ho Choi
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Patent number: 11870322Abstract: A modular motor system and methods wherein at least two dual radial gap motors with attachment points may be joined together in a modular manner for the purpose of providing the capability of incrementally increasing or decreasing the total power output of the modular.Type: GrantFiled: June 29, 2022Date of Patent: January 9, 2024Inventor: Bryan Prucher
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Patent number: 11870318Abstract: Homopolar linear synchronous machines are provided herein that include a mover device. The mover device includes a cold plate with ferromagnetic cores extending through slots in the cold plate. Layers of armature coils are located around the ferromagnetic cores on opposite sides of the cold plate. The mover device further includes at least one field coil.Type: GrantFiled: August 24, 2022Date of Patent: January 9, 2024Assignee: HYPERLOOP TECHNOLOGIES, INC.Inventors: Alexander Jedinger, Arbi Gharakhani Siraki, Erik Johnson, Shahriyar Beizaee, Rachel Ozer, Ju Hyung Kim
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Patent number: 11870307Abstract: The present invention relates to a method for increasing the efficiency of an energy transfer device (100) with which electrical energy is converted contactlessly into electrical energy with the aid of a magnetic field in order to electrically excite a rotor of an electrical machine, comprising the step of: arranging an additional electrically conductive material layer (13) on at least one active part (12, 19, 35, 45) of the energy transfer device (100), wherein an active part of the energy transfer device (100) is a part of the energy transfer device (100) which is at least partially exposed to the magnetic field used for energy transfer, and wherein the electrical conductivity of the additional material layer (13) is greater than the electrical conductivity of the at least one active part (12, 19, 35, 45). Moreover, the invention relates to an energy transfer device (100) and to a use of an electrically conductive material.Type: GrantFiled: June 4, 2021Date of Patent: January 9, 2024Assignee: Universität StuttgartInventors: David Maier, Marcel Maier, Nejila Parspour
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Patent number: 11870314Abstract: A method of controlling a dual wound synchronous machine (DWSM) includes: determining virtual current commands based on a current command associated with each of two winding sets of the DWSM; determining virtual half-motor currents by applying a mathematical transformation on measured output currents; determining half-motor difference currents based on differences between the corresponding virtual current command and the virtual half-motor current; calculating forward path voltage commands based on the corresponding difference currents and using first and second gain factors; determining feedback voltage commands by applying third and fourth gain factors to the virtual half-motor currents; determining virtual final voltage commands based on the corresponding forward path and feedback voltage commands; determining final voltage commands by applying a second mathematical transformation to the virtual final voltage commands; commanding, based on the final voltage commands, inverters to apply corresponding voltagType: GrantFiled: December 28, 2021Date of Patent: January 9, 2024Assignee: Steering Solutions IP Holding CorporationInventor: Prerit Pramod
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Patent number: 11863020Abstract: A rotor core has a magnet insertion hole, an opening formed adjacent to the magnet insertion hole in the circumferential direction, and a thin wall portion formed between the opening and an outer circumference of the rotor core. A stator core has a length in the axial direction shorter than that of the rotor core. The rotor core has a facing region where the rotor core faces the stator core in the radial direction and an overhang region where the rotor core protrudes from the stator core in the axial direction. A distance from the center axis to a portion of the outer circumference located on a radially outer side of the magnet insertion hole is longer in at least part of the overhang region than in the facing region. The minimum width of the thin wall portion in the radial direction is the same in both regions.Type: GrantFiled: February 21, 2019Date of Patent: January 2, 2024Assignee: Mitsubishi Electric CorporationInventors: Masahiro Nigo, Yuji Hirosawa, Emi Tsukamoto