Mounted On A Sleeve/hub Patents (Class 310/156.12)
  • Patent number: 10973967
    Abstract: Implantable blood pumps and related methods employ a compact rotary motor. The compact rotary motor includes a stator and a rotor. The stator includes a stator core and stator coils. The stator core includes a toroidal portion. Each of the stator coils extends around a respective segment of the toroidal portion. The stator being disposed within the housing circumferentially about the dividing wall such that the blood flow conduit extends through the stator core. The stator core is disposed circumferentially around at least a portion of the rotor.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: April 13, 2021
    Assignee: TC1 LLC
    Inventors: Thomas Nyikos, Bernhard Warberger
  • Patent number: 10924040
    Abstract: One example is a system for controlling a motor during startup. The system includes measurement logic, pattern detection logic, and mode logic. The measurement logic monitors a back-electromotive force (BEMF) signal representing a BEMF of an electric motor and the pattern detection logic monitors this signal to detect instances of the monitored BEMF signal exhibiting a predetermined pattern. The mode logic enables control of the electric motor according to a plurality of modes of control. In some examples, the mode logic initially employs a first mode of control and switches from the first mode of control to a second mode of control in response to the pattern detection logic detecting that a BEMF signal exhibits the predetermined pattern over a plurality of commutation states.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: February 16, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Kristen N. Mogensen
  • Patent number: 10862359
    Abstract: A rotor, a motor, an air-conditioning apparatus, and a method for manufacturing a rotor are provided with high productivity and reliability and with structural stability. The rotor includes a shaft, an inner core into which the shaft is inserted, an outer core provided on a radially outer side of the inner core and composed of a plurality of divided cores formed by stacking a plurality of thin plate materials and connected in an annular shape, and a coupling member made of resin, coupling the inner core and the outer core together, and covering both end faces of the outer core in an axial direction of the shaft. The outer core has radially outer parts of the divided cores brought into close contact with each other.
    Type: Grant
    Filed: November 26, 2015
    Date of Patent: December 8, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hironori Yabuuchi, Shinji Kobayashi
  • Patent number: 10826342
    Abstract: A rotor for a permanent magnet generator includes a rotor body extending between a first end and a second end, having a cylindrical bore and a plurality of flats on an outer peripheral surface. Permanent magnets are positioned at the flats. An outer ring surrounds the permanent magnets and defines an outer diameter. A ratio of the outer diameter to an axial length between the first and second ends is between 3.2 and 3.4. An integrated drive generator and a method are also disclosed.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: November 3, 2020
    Assignee: Hamilton Sunstrand Corporation
    Inventors: Derek R. Hochstetler, Ted A. Martin, Duane C. Johnson, Glenn C. Lemmers, Jr., Diego Rocha
  • Patent number: 10784754
    Abstract: A method for producing a pole housing for an electric motor includes preparing a tube lateral surface from a preferably pre-galvanized sheet metal material and shaping the tube lateral surface to form a cylindrical pole tube from the sheet metal material in such a way that longitudinal edges of the tube lateral surface extended in the tube longitudinal direction face towards one another. The longitudinal edges of the tube lateral surface are joined to one another to form a closed pole tube. A previously-provided cover is form-lockingly and/or force-lockingly fastened as a bearing plate to a front end face of the pole tube and a fluid-impermeable joint is formed between the cover and the pole tube. A pole housing for an electric motor and an electric motor having a pole housing are also provided.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: September 22, 2020
    Assignees: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Wuerzburg, Schuerholz Gmbh & Co. KG Stanztechnik
    Inventors: Norman Braungardt, Christian Kaiser, Alexander Kifer, Angelo Castrignano, Stefan Wortmann
  • Patent number: 10770939
    Abstract: Provided is a rotor for a permanent magnet rotary electric machine, which enables the bonding of a permanent magnet to a rotor core in a skewed manner with respect to an axial direction of the rotor core. The rotor includes a rotor core including a cylindrical portion and a pair of polygonal columnar portions provided to both ends of the cylindrical portion in the axial direction, and a permanent magnet having a bonding surface, which is flat and bonded to the rotor core. The pair of polygonal columnar portions has flat surfaces that are arranged so that center positions are spaced apart from each other as viewed in the axial direction. The bonding surface of the permanent magnet is bonded to the respective flat surfaces of the pair of polygonal columnar portions under a state in which the permanent magnet is skewed with respect to the axial direction.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: September 8, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tomoya Uchimura, Shinichi Yamaguchi
  • Patent number: 10661868
    Abstract: A vessel propulsion apparatus includes a propulsive force generator including a duct and a propeller. The duct includes a stator. The propeller includes a rim that includes a rotor disposed at a position facing the stator, and a blade on an inner side in a radial direction of the rim. The vessel propulsion apparatus further includes a steering shaft that turnably supports the duct, a motor controller that rotationally drives an electric motor including the stator and the propeller in forward and reverse rotation directions, a turning mechanism that turns the duct in a full turning angle range including a range of ±180 degrees, and a turning angle range limiter that limits a turning angle range of the turning mechanism to a reduced turning angle range narrower than the full turning angle range, and when a predetermined limitation cancellation condition is met, cancels the limitation and allows turning in a turning angle range wider than the reduced turning angle range.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: May 26, 2020
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Takayoshi Suzuki, Kohei Yamaguchi
  • Patent number: 10651698
    Abstract: A rotor includes a tubular sleeve member, a plurality of permanent magnets aligned in a peripheral direction on an outer peripheral surface of the sleeve member, and a tubular reinforcing member covering an outer peripheral surface of the permanent magnets. The sleeve member includes first and second end portions, which are spaced apart from each other in an axial direction, and an inner peripheral surface forming a through hole that is parallel to the axial direction and through which a shaft passes. The first end portion is a flange portion. The inner peripheral surface includes a first tapered surface, an inner diameter of which is continuously reduced toward the second end portion from the first end portion, and a tapered surface, an inner diameter of which is continuously reduced toward the end portion from the second end portion.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: May 12, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshiharu Takashima, Yoshiki Okada, Masafumi Ogawa
  • Patent number: 10630132
    Abstract: A rotor and a motor having a rotor are provided. The rotor may include a rotor core, a cover provided on an upper part of the rotor core, a magnet provided on an outer circumferential surface of the rotor core, and a can member that accommodates the rotor core and the magnet therein and is coupled to the cover. The cover may include a groove formed in a circumferential direction with respect to the center of the cover and into which an edge of the can member may be inserted, and the edge of the can member may be inserted into the groove of the cover to be coupled to the cover. Therefore, use of an adhesive when the can member is coupled to the rotor core may be avoided.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: April 21, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Hee Soo Lim, Jae Hyun Park
  • Patent number: 10605623
    Abstract: A rotation measurement system is shown and described herein. In some embodiments, the rotation measurement system comprises a pinion gear comprising an elastic material allowing the pinion gear to deform. The elastic deformation of the pinion gear provides a complete mesh such that there is no backlash between the pinion gear and a main gear when the pinion gear is pressed into the main gear. The pinion gear may be held in place with at least one spring pressing the pinion gear into the main gear. A sensor for measuring the rotation of the pinion gear may be decoupled from the pinion gear assembly by utilizing a Hall effect sensor to detect a magnetic field of a magnet disposed on a shaft coupled to the pinion gear.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: March 31, 2020
    Assignee: Altec Industries, Inc.
    Inventor: Timothy J. Mourlam
  • Patent number: 10601269
    Abstract: Provided is a rotor group for electromechanical components including a substantially cylindrical, magnetic element, defining a main axis, two bases and a side surface, and including a through hole substantially centred on the main axis, defining inner walls and including at least one groove, for the rotational constraint around the main axis of a transmission element with respect to the magnetic element, on the inner walls, and the transmission element including polymeric material, mainly arranged inside the through hole, including coupling tabs, in contact with the inner walls of the through hole, configured for the rotational constraint around the main axis of the transmission element with respect to the magnetic element and including coupling tabs presenting folded free ends in situ, in contact with at least one of the bases, adapted to constrain the translation along the main axis of the transmission element with respect to the magnetic element.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: March 24, 2020
    Assignee: METEOR S.a.s. di Fabio Dell'Oglio & C.
    Inventor: Fabio Dell'Oglio
  • Patent number: 10601279
    Abstract: A permanent magnet synchronous motor with an integrated pump body and its preparation method are provided. The preparation method comprises: 1) performing an injection molding process for the first time on a coil, which is wound on a coil former, to form a coil sealing part for sealing the coil; 2) assembling an iron core in the sealed coil and performing the injection molding process for the second time on them to form a pump body part with a rotor barrel, wherein the rotor barrel is formed by conducting the injection molding process based on the iron core, and an isolating thin layer is formed at a polar arc part of the iron core to isolate the iron core from a rotor cavity in the rotor barrel. A good electromagnetic property of the motor is ensured and the water leakage problem is solved.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: March 24, 2020
    Assignee: Hanyu Group Joint-Stock Co., Ltd.
    Inventors: Huashan Shi, Likai Zheng, Hongbiao Wang, Shigang Dong, Changjian Li
  • Patent number: 10587158
    Abstract: A torque delivering apparatus, including: polygonal cross-section stator body having a plurality of exterior side faces of even number extending between opposite axial end faces, the stator including cylindrical bore extending between the opposite axial ends and centred on central axis of the stator body; a rotor assembly having cylindrical cross-section sized for rotation within the cylindrical bore about the central axis with at least one permanent magnet and shaft coupled to the magnet for rotation; and a plurality of solenoid coils, each coil having plurality of windings and routed to have sections extending parallel along opposite ones of the plurality of exterior side faces; wherein each of the plurality of coils is configured to selectively receive current and generate magnetic field in the stator that is applied to the rotor magnet, the rotor being subject to magnetic torque within the cylindrical bore for rotating and aligning the magnetic field of the permanent magnet with the generated magnetic fie
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: March 10, 2020
    Assignee: MAGSWITCH TECHNOLOGY INC.
    Inventors: David H. Morton, Michael H. Reed, Thomas R. Whitt, Michael C. Blanchard
  • Patent number: 10581288
    Abstract: A rotor includes: a rotary member; permanent magnets in a plurality of columns which are arranged along the circumferential direction of the rotary member and each of which is divided into a plurality of permanent magnets in a rotary axis direction X of the rotary member; and a sheath tube which is fitted to the outer circumferential side of the permanent magnets, which covers the permanent magnets and which is formed of a fiber-reinforced plastic, and the sheath tube is divided, in the rotary axis direction X of the rotary member, by a division number which exceeds the division number of the permanent magnets.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: March 3, 2020
    Assignee: FANUC CORPORATION
    Inventors: Shinobu Takano, Takafumi Kajiya, Kenji Kawai
  • Patent number: 10566864
    Abstract: The present invention relates to a magnet retainer for use in a bldc motor of an electrical appliance. The bldc electric motor comprises a stator, a shaft and an inner magnet-rotor which comprises a core that includes a plurality of slots each for receiving a permanent magnet and a bore for press-fittingly receiving the shaft and a plurality of permanent magnets that are adapted to be respectively mounted into the slots. The magnet retainer of the present invention comprises a main body which is adapted for installation onto the core and a plurality of outer legs each disposed onto the main body and each adapted to be inserted into the respective slot, to resiliently press the respective permanent magnet radially outwards and to clamp the respective permanent magnet within the slot.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: February 18, 2020
    Assignee: ARCELIK ANONIM SIRKETI
    Inventors: Asuman Firat, Emin Gultekin Sonmez, Pevrul Sarikaya, Gokhan Ergin
  • Patent number: 10559988
    Abstract: A first magnet group provided to a first core member and a second magnet group provided to a second core member are adjacent to each other in an axial direction of a rotor. The first magnet group includes a plurality of first magnets arrayed in a circumferential direction of the rotor. The second magnet group includes a plurality of second magnets arrayed in the circumferential direction. The first magnet and the second magnet, which are adjacent to each other and have the same polarity, are shifted from each other by a certain angle in the circumferential direction. One of the first core member and the second core member has a first recessed portion, and another of the first core member and the second core member has a first protruding portion to be engaged with the first recessed portion in the circumferential direction.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: February 11, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takashi Umeda, Hiroki Kitani
  • Patent number: 10469005
    Abstract: The present teaching relates to a magnetic sensor comprising an input port to be connected to an external power supply, a magnetic field detecting circuit configured to generate a magnet detection signal, an output control circuit configured to control operation of the magnetic sensor in response to the magnet detection signal, and an output port. The magnetic field detecting circuit includes a magnetic sensing element configured to detect an external magnetic field and output a detection signal, a signal processing element configured to amplify the detection signal and removing interference from the detection signal to generate processed detection signal, and an analog-digital conversion element configured to convert the processed detection signal into a magnet detection signal, and the output control circuit is configured to control the magnetic sensor to operate in at least one of a first state and a second state responsive to at least the magnet detection signal.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: November 5, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Hui Min Guo, Shu Zuo Lou, Xiao Ming Chen, Guang Jie Cai, Chun Fai Wong, Yue Li, Chi Ping Sun, Bao Ting Liu, En Hui Wang, Fei Xin, Shing Hin Yeung, Xiu Wen Yang, Li Sheng Liu, Yan Yun Cui, Shu Juan Huang
  • Patent number: 10461590
    Abstract: A single phase permanent magnet motor includes a stator. The stator includes a stator core and windings. The stator core includes a ring portion, tooth bodies extending radially from the ring portion, and a pole shoe extending from a distal end to two circumferential sides of each tooth body. Each pole shoe defines a positioning slot. A center of each positioning slot is offset from a center of symmetry of one adjacent tooth body so that a torque fluctuation of an output torque of the single phase permanent magnet motor during operation is less than 50%. As a result, the motor vibration and noise are small.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: October 29, 2019
    Assignee: Johnson Electric International AG
    Inventors: Yue Li, Jie Chai, Chui You Zhou, Tao Zhang, Yong Wang, Yong Li
  • Patent number: 10454326
    Abstract: A synchronous motor includes a stator with a stator winding, and a rotor on which magnetic poles made of permanent-magnetic material are formed, each pole having a cambered outer contour, especially an outer contour cambered radially outwards, in particular, 2×p individual poles being salient in the circumferential direction, p being the number of pole pairs.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: October 22, 2019
    Assignee: SEW—EURODRIVE GMBH & CO. KG
    Inventor: Helmut Nestler
  • Patent number: 10389187
    Abstract: A motor, a pump and a cleaning apparatus are provided. The motor includes a stator and a rotor rotatable relative to the stator. The stator includes a stator core and stator windings wound around the stator core. The stator core includes a pair of opposing poles and a yoke connected between the poles. Each pole has a pole arc surface facing the rotor, with an air gap formed between the pole arc surface and the rotor. The pair of poles includes opposing circumferential end portions spaced apart from each other, and a ratio of a distance between the circumferential end portions to a minimum width of the air gap between the pole arc surface and the rotor is less than 2.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: August 20, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Yue Li, Min Li, Chui You Zhou, Bao Ting Liu, Yong Wang, Wei Zhang, Xiao Lin Zhang
  • Patent number: 10348143
    Abstract: A multi-pole component for an electric machine includes an upper side, a lower side, a first magnetic pole having a surface on the upper side, a second magnetic pole having a surface in a tangential direction adjacent to the first magnetic pole on the upper side and a soft-magnetic device. The soft-magnetic device has a recess between the first magnetic pole and the second magnetic pole. A vertical direction is directed from the upper side to the lower side at right angle to a tangential direction. The first magnetic pole has a permanent magnet with a magnetization in one direction, and the second magnetic pole does not have a permanent magnet.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: July 9, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ignacio Diaz Diaz, Matthias Dorfner, Zeljko Jajtic
  • Patent number: 10335892
    Abstract: A welding electrode for use in resistance spot welding an assembly of overlying metal workpieces that includes an aluminum alloy workpiece is disclosed. The welding electrode includes a body, a convex weld face at one end of the body, and ringed protrusions that project outwardly from the convex weld face. The ringed protrusions are positioned to make contact with, and indent into, a surface of the aluminum alloy workpiece when the convex weld face is pressed against the aluminum alloy workpiece during a spot welding event. When brought into contact with the surface of the aluminum alloy workpiece, the ringed protrusions disrupt the oxide film present on the aluminum alloy workpiece surface, which improves the spot welding process.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: July 2, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: David R. Sigler, James G. Schroth, Michael J. Karagoulis
  • Patent number: 10340780
    Abstract: According to one embodiment, a transverse flux machine includes a stator and a rotor. The stator includes a winding and a first ferromagnetic unit. The winding is wound along a rotational direction of a rotation axis. The first ferromagnetic unit has L (L is integer number) magnetic poles holding the winding. The rotor is rotatable relatively to the stator around the rotation axis. The rotor includes a second ferromagnetic unit having L magnetic poles facing the first ferromagnetic unit. If an order of harmonic component of torque ripple to be reduced is (N×1), (N×2), . . ., (N×(M?1)) (M and N are integer numbers. ML), among L magnetic poles in the first and second ferromagnetic units, a relative position of M magnetic poles along the rotational direction is shifted by ?1 ((180°/N/M)?1 (540°/N/M)) in order.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: July 2, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuhito Ueda, Hiroshi Takahashi
  • Patent number: 10340759
    Abstract: The ceiling fan motor according to the present invention includes a rotor assembly including a rotor housing installed with a plurality of yoke pieces and a plurality of magnets in the inner side, the rotor housing having a plurality of magnet fixing parts formed between the plurality of magnets, a stator assembly placed in the inner side of the rotor assembly, the stator assembly including a stator core, and an upper insulator and a lower insulator engaged with the upper part and lower part of the stator core, and a shaft fixed being engaged with the center part of the stator core, and the magnet is engaged being forcibly press-fitted between the fixing parts.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: July 2, 2019
    Assignee: NEW MOTECH CO., LTD.
    Inventors: Jeong Cheol Jang, Je Hyung Seo, Hee Sang Kim
  • Patent number: 10293926
    Abstract: A propulsion system for a vehicle includes a supporting structure and a plurality of propellers carried by the supporting structure. Each propeller is associated to an electric motor with a toroid geometry, having an annular rotor rotatable within an annular stator and defining therewithin a central aperture. The blades of the propeller, which are carried by the rotor, extend to the central aperture.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: May 21, 2019
    Assignee: P-GEVS S.R.L.
    Inventors: Pietro Perlo, Pietro Guerrieri
  • Patent number: 10291091
    Abstract: An electric fluid pump, rotor unit therefore, and methods of constructions thereof are provided. The fluid pump includes a stator unit configured to generate a magnetic field in response to a control signal. A rotor unit is received within the stator unit, wherein the rotor unit is configured to rotate about a central rotor axis in response to the magnetic field generated by the stator unit. The rotor unit includes a plurality of magnets contained in through openings of a carrier assembly having first and second carrier members, wherein the first and second carrier members are fixed to one another by bond joints.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: May 14, 2019
    Assignee: MAGNA POWERTRAIN FPC LIMITED PARTNERSHIP
    Inventors: David A. Moritz, Nicholas J. Glowacki, Richard Muizelaar
  • Patent number: 10256679
    Abstract: The rotor for an electric motor includes a central rotor shaft (2) and a permanent-magnetic rotor body fastened on the rotor shaft. The rotor body is provided with a casing (8) which is radially distanced to the rotor shaft (2). A first annular space, which is adjacent the casing (8) and which is molded out with a plastic (10) at least partly containing magnet particles, is formed between the rotor shaft (2) and the casing (8).
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: April 9, 2019
    Assignee: GRUNDFOS HOLDING A/S
    Inventor: Martin Vestermark Vad
  • Patent number: 10205413
    Abstract: A magnetic sensor integrated circuit, a motor assembly and an application device are provided. The integrated circuit includes a housing, a semiconductor substrate, at least one input port and an output port, and an electronic circuit arranged on the semiconductor substrate. The electronic circuit includes a rectifying circuit, a magnetic field detection circuit configured to detect an external magnetic field and output magnetic field detection information, and an output control circuit connected to the rectifying circuit, and configured to control, at least based on the magnetic field detection information, the integrated circuit to operate in at least one of a first state in which a load current flows from the output port to an outside of the integrated circuit and a second state in which a load current flows from the outside of the integrated circuit to the output port. The load current flows through the rectifying circuit.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: February 12, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Chi Ping Sun, Fei Xin, Ken Wong, Shing Hin Yeung, Shu Juan Huang, Yun Long Jiang, Yue Li, Bao Ting Liu, En Hui Wang, Xiu Wen Yang, Li Sheng Liu, Yan Yun Cui
  • Patent number: 10177611
    Abstract: A stator core for a rotating electrical machine includes an annular yoke portion; a tooth group fitted to an inner side of the yoke portion and formed such that both ends in a circumferential direction on an inner circumferential side of adjacent teeth are integrally connected with each other by a thin connection portion; and a slot for accommodating a stator winding. The yoke portion has grooves at regular intervals in an inner circumferential surface thereof and extending in an axial direction of the stator, the grooves each having a V shape such that a cross section thereof perpendicular to the axial direction opens toward an inner side of the stator core. Each tooth has, at an outer-circumferential-side end thereof, a fitting portion whose cross section perpendicular to the axial direction is formed in a wedge shape so as to allow the tooth to be fitted along the corresponding groove.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: January 8, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Sachiko Kawasaki, Atsushi Sakaue, Hisashi Namura, Shinichi Ito, Satoru Akutsu, Masatsugu Nakano, Toyoaki Udo
  • Patent number: 10177617
    Abstract: An external rotor motor includes an inner stator and an external rotor. The external rotor includes a casing and a plurality of magnets. The casing has an annular inner wall. The annular inner wall faces the inner stator and surrounds the inner stator. The magnets are placed along the annular inner wall of the casing. The magnets surround the inner stator. An end of at least one of the magnets has a round edge, a curvature radius of the round edge is R, a thickness of the at least one of the plurality of magnets is T, and the following condition is satisfied: 0.85?R/T?1.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: January 8, 2019
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Shou-Long Yu, Yang-Guang Liu, Yu-Choung Chang
  • Patent number: 10128702
    Abstract: A rotor of a rotary electric machine includes a rotor core. The rotor core has magnet insertion holes which are arranged at first circumferential intervals and in which permanent magnets are disposed. The rotor core includes steel plates, a first core block, and a second core block. The steel plates are stacked in an axial direction of the rotor. The first core block includes first steel plates among the steel plates stacked with rotational stacking at a rotational stacking angle corresponding to a common multiple of a first circumferential interval among the first circumferential intervals and a second circumferential interval among second circumferential intervals. The second core block includes second steel plates among the steel plates stacked with the rotational stacking at the rotational stacking angle from a position shifted by an angle corresponding to the first circumferential interval relative to the first core block.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: November 13, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Manabu Yazaki
  • Patent number: 10112680
    Abstract: Apparatuses and methods relating to hub motors having enhanced thermal characteristics may include a hub motor having a stator comprising steel and a central axle (e.g., a mandrel and shaft) comprising a material with a substantially higher thermal conductivity than the stator (e.g., aluminum). Heat may be transferred from the stator through the axle of the motor to an outside heat sink. Manufacturing of thermally enhanced hub motors may include extrusion and/or cryogenic fitting methods relating to the central mandrel and shaft.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: October 30, 2018
    Assignee: Future Motion, Inc.
    Inventors: Kyle Jonathan Doerksen, Dan Blachinsky, Julian De La Rua, Clyde Hancock
  • Patent number: 10014737
    Abstract: A rotor for an electric machine is mounted for rotation about an axis and includes a plurality of permanent magnets placed on a radial outer surface of the rotor for forming at least one magnetic pole pair. An anisotropically-soft sintered magnetic material having an easy direction and a hard direction is located in at least one section of the rotor radially further inward than the plurality of permanent magnets.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: July 3, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Ralf Fischer, Korbinian Petermaier, Rolf Vollmer
  • Patent number: 9991772
    Abstract: A rotor or stator hub for an electric machine includes a plurality of magnets arranged in a predetermined same pattern on a plurality of uniformly sized carrier plates. A plurality of permanent magnets are uniformly mounted on each of the carrier plates proximate a first edge of the carrier plate and spaced away from a second edge of the carrier plate. The carrier plates may be mounted on a rotor or stator hub in a predetermined configuration to create a plurality of axial array groups.
    Type: Grant
    Filed: May 7, 2016
    Date of Patent: June 5, 2018
    Inventor: Philip Totaro
  • Patent number: 9973121
    Abstract: The present teaching relates to a magnetic sensor residing in a housing. The magnetic sensor includes an input port and an output port, both extending from the housing, wherein the input port is to be connected to an external alternating current (AC) power supply. The magnetic sensor also includes an electric circuit which comprises an output control circuit coupled with the output port and configured to be at least responsive to a magnetic induction signal and the external AC power supply to control the magnetic sensor to operate in a state in which a load current flows through the output port. The magnetic induction signal is indicative of at least one characteristic of an external magnetic field detected by the electrical circuit and the operating frequency of the magnetic sensor is positively proportional to the frequency of the external AC power supply.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: May 15, 2018
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Chi Ping Sun, Fei Xin, Ken Wong, Shing Hin Yeung, Hui Min Guo, Shu Zuo Lou, Xiao Ming Chen, Guang Jie Cai, Chun Fai Wong, Shu Juan Huang, Yun Long Jiang, Yue Li, Bao Ting Liu, En Hui Wang, Xiu Wen Yang, Li Sheng Liu, Yan Yun Cui
  • Patent number: 9966883
    Abstract: The present teaching relates to a method/apparatus for a magnetic sensor. The apparatus of the magnetic sensor resides in a housing and includes an input port and an output port, both extending from the housing. The apparatus also includes an electrical circuit which comprises a magnetic field detecting circuit, configured to detect an external magnetic field and output a magnetic induction signal that is indicative of information related to the external magnetic field, an output control circuit coupled between the magnetic field detecting circuit and the output port, and a state control circuit coupled with the output control circuit and configured to determine whether a predetermined condition is satisfied and signal the same to the output control circuit.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: May 8, 2018
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Chi Ping Sun, Fei Xin, Ken Wong, Shing Hin Yeung, Hui Min Guo, Shu Zuo Lou, Xiao Ming Chen, Guang Jie Cai, Chun Fai Wong, Shu Juan Huang, Yun Long Jiang, Yue Li, Bao Ting Liu, En Hui Wang, Xiu Wen Yang, Li Sheng Liu, Yan Yun Cui
  • Patent number: 9966805
    Abstract: An electric motor includes a stator and a rotor rotatably mounted to the stator. The stator includes a housing having an open end, a plurality of adhesive strips applied on an inner surface of the housing, a plurality of magnets bonded to the inner surface of the housing by the adhesive strips, and an end cap assembly mounted to the opening end of the housing. The adhesive covers at least 70% of the area of the outer surface of each magnet after the magnets are assembled to the housing.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: May 8, 2018
    Assignee: JOHNSON ELECTRIC S.A.
    Inventor: Mei Yee Lee
  • Patent number: 9954469
    Abstract: The present teaching relates to a magnetic sensor that comprises a housing, an input port and an output port, both extending from the housing and the input port being connected to an external alternating current (AC) power supply, and an electrical circuit. The electrical circuit comprises an output control circuit coupled with the output port and configured to be responsive to a magnetic induction signal to control the magnetic sensor to operate in a state in which a load current flows through the output port when a predetermined condition is satisfied, and operate in another state when the predetermined condition is not satisfied. The operating frequency of the magnetic sensor is positively proportional to the frequency of the external AC power supply.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: April 24, 2018
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Chi Ping Sun, Fei Xin, Ken Wong, Shing Hin Yeung, Hui Min Guo, Shu Zuo Lou, Xiao Ming Chen, Guang Jie Cai, Chun Fai Wong, Shu Juan Huang, Yun Long Jiang, Yue Li, Bao Ting Liu, En Hui Wang, Xiu Wen Yang, Li Sheng Liu, Yan Yun Cui
  • Patent number: 9948150
    Abstract: Systems and methods for the construction of components such as laminations for the stator core of an ESP motor wherein particles of different materials are mixed and pressed together at an elevated temperature to form a composite material in the desired lamination shape. The materials are selected to provide characteristics such as high magnetic permeability from one material and high thermal conductivity from the other material. The particles of the different materials are pressed together at a temperature that is sufficiently high to fuse the particles together and form a composite material, but is also sufficiently low that the materials are not sintered. The individual materials therefore retain their original characteristics, and the composite material benefits from the high magnetic permeability of the first material and the high thermal conductivity of the other material.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: April 17, 2018
    Assignee: Baker Hughes Incorporated
    Inventors: Deepak Kumar, Carlos A. Prieto, Zhiyue Xu, Michael H. Johnson
  • Patent number: 9921237
    Abstract: A sensor apparatus for detecting a wheel speed of a vehicle has a rod-shaped sensor carrier and a sensor, which is introduced into the sensor carrier and, in order to detect the wheel speed, senses the rotation of a rotor rotating together with the wheel. The sensor apparatus has a carrier structure for accommodating the sensor and a potting compound for filling the sensor carrier. The surface, in particular the lateral surface, of the sensor carrier is formed by a plurality of interrupted, metal surface areas of the carrier structure and areas filled with the potting compound, wherein at least two metal surface areas are in the form of contact surfaces.
    Type: Grant
    Filed: May 24, 2014
    Date of Patent: March 20, 2018
    Assignee: WABCO GmbH
    Inventor: Klaus Kuster
  • Patent number: 9923422
    Abstract: A rotor assembly comprises a number of rotor segments forming a rotor structure and a central structure connected to the rotor structure and at least partially arranged between at least two of the rotor segments, for example surrounded by the rotor structure. A wind turbine generator comprising a stator assembly and said rotor assembly and a wind turbine comprising such a generator are also provided.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: March 20, 2018
    Assignee: GE Renewable Technologies Wind B.V.
    Inventor: Pere Cortada Acosta
  • Patent number: 9871475
    Abstract: A PWM motor drive device includes: a time counter that counts a time of a polarity of a motor phase signal; a register that retains the time; a zone setting circuit that splits the time into arbitrary zones and generates an arbitrary zone set for which a phase of motor current is adjusted; and a zone correction circuit that compares a motor current phase signal indicating the phase of the motor current with the motor phase signal to correct the zone set.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: January 16, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Katsuyuki Tabata, Tomokazu Furuno, Masayoshi Igarashi, Shinichi Kuroshima
  • Patent number: 9793768
    Abstract: A rotor has a projection part projected from an inner wall of a central hole part toward a central axis and a rib part defined between opening parts adjacent with each other in a circumferential direction. A first imaginary straight line is defined to extend from the central axis outward in a radial direction through a center of the projection part. The projection part is formed so that the first imaginary straight line passes the opening part. A second imaginary straight line is defined to extend from the central axis outward in the radial direction through a center of the rib part. The rib part is formed so that the second imaginary straight line passes a center of a pole part or an intermediate position between pole parts adjacent with each other in the circumferential direction.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: October 17, 2017
    Assignee: DENSO CORPORATION
    Inventors: Asuka Tanaka, Tatsuya Inagaki
  • Patent number: 9780630
    Abstract: A motor rotor and a method for manufacturing a motor rotor, enabling crimping of the resolver rotor at low cost with less influence on the detection accuracy. A motor rotor includes a resolver rotor and a rotor shaft to which the resolver rotor is affixed by crimping. The rotor shaft includes a first stepped section with which a crimping punch makes contact to deform the first stepped section, a second stepped section with which an end surface of the resolver rotor makes contact, and a cutout groove formed in a surface which is located near the first stepped section and with which an inner peripheral hole section of the resolver rotor makes contact. In the crimping operation, the first stepped section of the rotor shaft is bent within the cutout groove to form a crimping protrusion which presses the end surface of the resolver rotor.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: October 3, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki Yasuda, Yasuyuki Satake
  • Patent number: 9767985
    Abstract: Provided is a device for optimizing a diffusion section of an electron beam, comprising two groups of permanent magnets, a magnetic field formed by the four magnetic poles extending the electron beam in a longitudinal direction, and compressing the electron beam in a transverse direction, so that the electron beam becomes an approximate ellipse; another magnetic field formed by the eight magnetic poles optimizing an edge of a dispersed electron-beam bunch into an approximate rectangle; by controlling the four longitudinal connection mechanisms so that the upper magnetic yoke and the lower magnetic yoke of the first group of permanent magnets move synchronously towards the center thereof thereby longitudinally compressing the electron beam in the shape of an approximate ellipse, and the upper magnetic yoke and the lower magnetic yoke of the second group of permanent magnets move synchronously towards the center thereof thereby longitudinally compressing the electron beam in the shape of an approximate rectangl
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: September 19, 2017
    Assignee: Huazhong University of Science and Technology
    Inventors: Jiang Huang, Mingwu Fan, Tiaoqin Yu, Lige Zhang, Chen Zuo, Jun Yang, Yongqian Xiong, Kaifeng Liu, Gerald F. Wu, Lei Cao
  • Patent number: 9726522
    Abstract: A magnetic encoder structure according to an exemplary embodiment of the present invention includes: a back plate; and a magnet rubber which has a ring shape, and is vulcanized and attached to a rear surface of the back plate, in which the magnet rubber has a plurality of protruding portions which protrudes from an adhesive surface that is attached to the back plate, and groove portions which are formed between the protruding portions, and the protruding portions and the groove portions are repetitively disposed in a rotation direction of the magnet rubber.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: August 8, 2017
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventor: Chul Soon Im
  • Patent number: 9712003
    Abstract: A motor of a ceiling fan includes a stator, a shaft, a linking seat, and a rotor. The stator has a core with an assembly hole. The linking seat couples with the core and has an axial hole in alignment with the assembly hole in an axial direction of the shaft firmly resting in the axial hole. The rotor is rotatably arranged around the shaft.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: July 18, 2017
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Tso-Kuo Yin, Duo-Nian Shan
  • Patent number: 9685830
    Abstract: An electric motor (1), comprising a primary part (2a, 2b) having an iron-free winding device (3) that comprises at least two phases (6), wherein one phase (6) comprises at least two phase windings (4) and at least one electrical connecting element (5), a secondary part (7a, 7b) having an even number of magnetic poles (8), which are arranged alternatively on the secondary part (7a, 7b), wherein the winding device (3) is arranged in an air gap (9) between the primary part (2a, 2b) and the secondary part (7a, 7b) relative to an axis (10a, 10b), in such a manner that each phase winding (4) of a phase (6) is arranged opposite a respective magnetic pole (8) and all magnetic poles (8) are usable simultaneously for force formation.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: June 20, 2017
    Assignee: PATENTVERWERTUNGSGESELLSCHAFT PaLiBa GmbH
    Inventors: Roland Kasper, Wolfgang Heinemann, Norman Borchardt
  • Patent number: 9658051
    Abstract: The present invention relates to a resolver having a stator for detecting the rotational position of a rotor rotating at the inner center thereof. The stator includes: a stator core having a cylindrical shape; a plurality of excitation windings attached to the inner surface of the stator core at a predetermined distance in the circumferential direction, each of the plurality of excitation windings being tightly wound; a plurality of sine output windings stacked and attached to the patterns of the excitation windings in the circumferential direction, each of the plurality of sine output windings being loosely wound; and a plurality of cosine output windings stacked and attached to the patterns of the excitation windings in the circumferential direction, the sine output windings and the cosine output windings being alternately attached such that the sine output windings and the cosine output windings have the same winding distribution.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: May 23, 2017
    Assignee: DAESUNG ELECTRIC CO., LTD
    Inventors: Won Young Lee, Byung Cheol Na
  • Patent number: 9525326
    Abstract: A brush-less motor is disclosed, comprising a stator, a rotor, a plurality of field-effect tubes, a commutation circuit board, a control circuit board and a motor end cap, wherein the motor end cap comprises a front end cap and a rear end cap which are mutually fixedly connected to form an integrated motor; the plurality of field-effect tubes is directly fixed at the motor front end cap; the commutation circuit board and the control circuit board are both connected to the motor front end cap. The field-effect tubes of the brush-less motor are directly installed on a housing of the motor, ensuring good heat dissipation, saving heat sinks and cost; the integrated brush-less motor runs more smoothly and imposes requirements which are not as high as those imposed by the split brush-less motor on the accuracy of the housing. Thus, the reject ratio of products during batch production is reduced.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: December 20, 2016
    Assignee: CHANGZHOU GLOBE CO., LTD.
    Inventors: Yin Chen, Ranran Xia, Qiang Wang