Patents Examined by Thomas Truong
  • Patent number: 11075557
    Abstract: The present invention relates to a rotor (1) of a rotary electric machine, comprising: a body (3) comprising a cylindrical central core (5) and a circumferential plurality of arms (B1 . . . B18) extending radially out from the cylindrical central core (5), the body (3) being intended to be mounted with the ability to move about an axis of rotation X, a coilset produced by windings of turns and forming at least one series of coils (C1 . . . C9, C1? . . . C9?), a coil (C1 . . . C9, C1? . . . C9?) comprising a predetermined number of turns around at least two arms (B1 . . . B18) of the body (3), two adjacent coils (C1 . . . C9, C1? . . . C9?) of a series being angularly offset from one another with a partial overlap, in which the last coil (C9, C9?), situated radially furthest towards the outside, comprises a predetermined number of turns that is lower than the predetermined number of turns of the other coils of the series (C1 . . . C8, C1? . . . C8?).
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: July 27, 2021
    Assignee: Valeo Systèmes d'Essuyage
    Inventors: Jose-Luis Herrada, Quentin Aubugeau
  • Patent number: 11067090
    Abstract: An apparatus is provided that includes a rotor bore and a bore basket. The bore basket extends axially between a first and second axial ends. The bore basket includes an engagement panel, and cylindrical inner and outer radial panels. The inner and outer radial panels extend substantially between the first and second axial ends. The inner radial panel is disposed radially inside of and separated from the outer radial panel, defining an annular passage disposed there between. The bore basket includes a plurality of inlet apertures in fluid communication with the annular passage at a first axial position, and a plurality of exit apertures in fluid communication with the annular passage at a second axial position. The second axial end of the bore basket is attached to an inner radial hub of the rotor bore, and the rotor bore and bore basket are a unitary structure.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: July 20, 2021
    Assignee: Raytheon Technologies Corporation
    Inventor: Konstantinos P. Giannakopoulos
  • Patent number: 11070104
    Abstract: The invention relates to a stator (16) of an electrical machine (10), to an electrical machine (10), and to a method for producing same, particularly for adjusting movable parts in a motor vehicle, comprising a pole casing (15) to the inner wall (115) of which winding holders (36) carrying electric coils (17) are applied, the winding holders (36) comprising a stator tooth (120) which is formed on a yoke element (118) which is radially applied to the inner wall (115), and an insulating mask (61) is arranged on the winding holder (36), which insulates the electric coil (17) from the winding holder (36), and the insulating mask (61) extends with an axial projection (102) axially over the yoke element (118), the axial projection (102) being radially applied to the inner wall (115) of the pole casing (15) with a shoulder (108) extending in the peripheral direction (2).
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: July 20, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Torsten Gmuend, Armin Stubner, Helmut Meier
  • Patent number: 11070116
    Abstract: A rotating electrical machine of the double stator configuration includes a rotor shaped as a hollow cylinder disposed concentrically between an outer stator and an inner stator. The rotor can include plurality of radially spaced magnet cavities configured to receive permanent magnetic bars. To provide sufficient stiffness and rigidity, the rotor may be made from fiber composite material. To simplify construction, the rotor can be assembled from a plurality of rotor segments radially arranged about an axis line in which the magnet cavities are disposed.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: July 20, 2021
    Assignee: ABB Schweiz AG
    Inventors: Darren D. Tremelling, Colin Tschida, Ghanshyam Shrestha, Bahareh Anvari
  • Patent number: 11070102
    Abstract: A motor using a printed circuit board may include: a first base part forming a first circuit board on which a coil pattern is printed; a second base part forming a second circuit board on which the coil pattern is printed, the second base part spaced apart from the first base part; and a plurality of side parts forming side circuit boards on which the coil pattern is printed, the plurality of side parts connected to the first base part and the second base part, respectively, such that the coil pattern successively connects the first base part, the second base part, and the plurality of side parts.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: July 20, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jun Hwan Park, Seok Won Lee
  • Patent number: 11056937
    Abstract: A rotor core includes: a rotor shaft hole into which a rotor shaft is press-fitted; a first hole group having a plurality of holes; a shaft holding portion; a second hole group having a plurality of holes; a first annular portion; and an electromagnetic portion having a plurality of magnet insertion holes. Each hole of the second hole group is arranged to intersect with an extension line of a rib formed between the adjacent holes of the first hole group. An inner peripheral wall of each hole of the second hole group includes: a first arc point and a second arc point being located on an arc equidistant from a center of the rotor core; and a convex portion having an apex portion on an outer side further than the arc. The apex portion is located between the adjacent holes of the first hole group in the circumferential direction.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: July 6, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Tatsuya Ohzu
  • Patent number: 11047603
    Abstract: A rotor includes a shaft extending in the direction of an axis, and a rotor core including a central hole in which the shaft is inserted. The central hole includes a first central hole, a second central hole, and a third central hole in the direction of the axis. A distance from the axis to an inner circumferential surface of the third central hole is larger than a distance from the axis to an inner circumferential surface of the second central hole. The distance from the axis to the inner circumferential surface of the second central hole is larger than a distance from the axis to an inner circumferential surface of the first central hole.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: June 29, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takaya Shimokawa, Hiroki Aso, Takanori Watanabe, Ryogo Takahashi
  • Patent number: 11043859
    Abstract: A permanent magnet rotating electric machine is provided with: a magnet portion comprising a plurality of permanent magnets forming a plurality of sets each of which is attached annularly and which are disposed along an axial direction of a rotor; and a plurality of anti-scattering rings press-fitted along the axial direction around the outer circumference of the magnet portion forming the plurality of sets. The anti-scattering rings each have: an insulation coating provided on both side surfaces contacting adjacent, other anti-scattering rings; a chamfer provided between the outer circumferential surface and one side surface; and an insulation coating provided on the chamfer.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: June 22, 2021
    Assignee: MEIDENSHA CORPORATION
    Inventors: Takahiro Shimizu, Yosuke Arai, Kenji Kawakubo
  • Patent number: 11043876
    Abstract: A heat pipe assembly includes walls having porous wick linings, an insulating layer coupled with at least one of the walls, and an interior chamber sealed by the walls. The linings hold a liquid phase of a working fluid in the interior chamber. The insulating layer is directly against a conductive component of an electromagnetic power conversion device such that heat from the conductive component vaporizes the working fluid in the porous wick lining of the at least one wall and the working fluid condenses at or within the porous wick lining of at least one other wall to cool the conductive component of the electromagnetic power conversion device. The assembly can be placed in direct contact with the device while the device is operating and/or experiencing time-varying magnetic fields that cause the device to operate.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: June 22, 2021
    Assignee: General Electric Company
    Inventors: Karthik Bodla, Nathaniel Benedict Hawes, Brian Magann Rush, Weijun Yin, Andrew Thomas Cross, Corey Bourassa
  • Patent number: 11038387
    Abstract: A motor includes a stator, a first frame, a second frame, and a fastening member. The stator includes a stator core including a plurality of teeth extending radially inward and an armature winding wound around the teeth. The first frame is arranged to cover one axial end surface side of the stator. The second frame is arranged to cover another axial end surface side of the stator. The fastening member fastens the first frame and the second frame to each other with the stator core held by the first frame and the second frame in the axial direction. The circumference of the stator core and the circumference of at least one of the first frame and the second frame each include a circumferential positioning recess. The circumferential positioning recess is arranged at a circumferential reference position and is outwardly open in the radial direction.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: June 15, 2021
    Assignee: DENSO CORPORATION
    Inventors: Yuuji Yamashita, Takafumi Yamano
  • Patent number: 11038403
    Abstract: A rotary electric machine includes a stator with a stator winding, a rotor with a field winding supported for rotation about a rotation axis relative to the stator, and an excitation winding. The excitation winding is fixed relative to the rotor and is electrically connected to the field winding. The rotor defines a coolant channel having an inlet and an outlet. Liquid coolant enters the inlet and flows outwardly through a portion of the excitation winding to conduct heat away from the excitation winding. Generators, aircraft electrical systems, and methods of cooling rotary electric machines are also described.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: June 15, 2021
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventors: Glenn C. Lemmers, Jr., Brady A. Manogue
  • Patent number: 11028853
    Abstract: An electromagnet unit, a magnetic bearing device, and a vacuum pump with which displacement of a rotating body in a radial direction can be detected with precision. An upper electromagnet unit includes: radial electromagnets for supporting a rotor in a radial direction without contact; radial sensors for detecting displacement of the rotor in the radial direction; and a core around which coils are wound. Two radial electromagnets that are adjacent to each other in a circumferential direction of the core are disposed such that adjacent magnetic poles belonging respectively to the two radial electromagnets are homopolar, and a low magnetic flux interference region is formed between the two radial electromagnets. Each of the radial sensors is disposed in the low magnetic flux interference region.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: June 8, 2021
    Assignee: Edwards Japan Limited
    Inventor: Toshiaki Kawashima
  • Patent number: 11031842
    Abstract: The disclosure relates to a gear motor made of a housing enclosing an electric motor driving a reduction gear train having at least one intermediate gear and an output wheel, including an output wheel made of a single piece having a tooth crown on either side of which extend cylindrical axial extensions which are each held by the housing, each one of the extensions having at its respective end a coupling with an external drive element. The output wheel is coaxial with a toothed wheel constituting one of the intermediate gears, the toothed wheel being able to rotate freely in relation to one of the axial extensions.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: June 8, 2021
    Assignee: MMT AG
    Inventors: Mathieu Watrin, Christophe Adler, Philippe Brossard
  • Patent number: 11018556
    Abstract: A generator includes a stator with a stator winding, a rotor with a field winding supported for rotation relative to the stator, and a housing enclosing the stator and the rotor. The housing has an independent system port that is connected to a shared system port by a selector. The selector fluidly couples the stator and one of the independent system port and the shared system port. The selector also fluidly separates the stator from the other of the independent system port and the shared system port. Generator arrangements and methods of making generators are also described.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: May 25, 2021
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventor: Eric Alan Larson
  • Patent number: 11018558
    Abstract: A drum motor, comprises a drum tube having a cavity formed therein and a longitudinal axis, a shaft, which runs in the longitudinal axis and on which the drum tube is mounted by means of at least one rotary bearing, an electric synchronous drive unit arranged in the cavity of the drum tube, having a stator and a rotor, which are arranged in the longitudinal axis of the drum tube and wherein the rotor is connected to the drum tube and the stator is connected to the shaft, and a control unit for controlling the synchronous drive unit. The control unit of the drum motor has a frequency converter and is fastened directly to the shaft.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: May 25, 2021
    Assignee: INTERROLL HOLDING AG
    Inventor: Stefan Hamacher
  • Patent number: 11011952
    Abstract: A motor driving device includes N units (N is a natural number equal to or greater than 2) of inverters configured to control N units of motors, respectively, a×N units (a is a natural number) of cables configured to allow connection between the N units of inverters and the N units of motors, respectively, and a PWM signal output unit configured to transmit a PWM signal to the N units of inverters. The N units of inverters and the a×N units of cables are divided into M groups (M?N). The PWM signal output unit outputs the PWM signal for driving at least one inverter belonging to each group of the M groups so that the PWM signals have phase differences shifted by 360 degrees/M among the groups.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: May 18, 2021
    Assignee: FANUC CORPORATION
    Inventors: Yasuyuki Matsumoto, Masaya Tateda, Keitarou Inagaki
  • Patent number: 11005322
    Abstract: A rotor assembly for an axial flux machine may include at least one magnet and first and second support structures. The first support structure may be configured to have the at least one magnet attached thereto and to provide a flux return path for the at least one magnet. The second support structure may be configured to be attached to the first support structure so as to allow torque to be transferred between the at least one magnet and the second support structure via the first support structure, and may be further configured (A) to be attached to a rotatable shaft of the axial flux machine, or (B) to function as an output or input flange of the axial flux machine.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: May 11, 2021
    Assignee: E-Circuit Motors, Inc.
    Inventors: George Harder Milheim, Steven Robert Shaw
  • Patent number: 11005331
    Abstract: The invention relates to an enclosed rotary electrical machine including a cooling system comprising two internal fans (181, 182) fixedly mounted on shaft (160) at both ends of rotor (150). The rotor and stator (190) are contained in an enclosure sealed by two flanges. The fans allow dual air circulation in flux barriers surrounding the rotor magnets and formed by axial recesses running throughout the rotor, and also air circulation in the space created between the internal fans and the inner faces of the flanges comprising fins (113, 123) which orient the air flows created by the fans to capture the heat thereof. External cooling allows the enclosure and the flanges to be cooled, by air or liquid cooling.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: May 11, 2021
    Assignee: MAVEL S.R.L.
    Inventors: Wissam Dib, Luca Favre, Davide Bettoni
  • Patent number: 10998792
    Abstract: An electrical machine comprises a polymeric housing having a stator band, the polymeric housing formed by a polymeric material and constructed to house components of the electrical machine, structurally support the electrical machine and react torque loads generated by the electrical machine; a stator overmolded into and partially encapsulated by the stator band, the stator including a laminated stator core and a plurality of stator windings; a rotor in magnetic communication with the stator; a first endplate integral with the polymeric housing; and a second endplate, the second endplate being a polymeric endplate, the second endplate including a plurality of ribs and a metallic structure, wherein the electrical machine is constructed as an industrial electrical machine.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: May 4, 2021
    Assignee: ABB Schweiz AG
    Inventors: Sheng Zhong, Dariusz Bednarowski, Colin E. Tschida, Darren Tremelling, Lukasz Malinowski
  • Patent number: 10998785
    Abstract: A rotor of an induction machine includes a ferromagnetic core structure and a cage winding. The cage winding includes rotor bars and end-rings. The rotor bars are located in slots of the ferromagnetic core structure. The end-rings connect the ends of the rotor bars to each other at the ends of the ferromagnetic core structure. The radial height of the slots of the ferromagnetic core structure is greater than the radial height of the rotor bars so that the bottom portions of the slots are free from the rotor bars. Therefore, the bottom portions of the slots constitute cooling ducts for conducting cooling fluid through the rotor. As the rotor bars constitute one wall of each cooling duct, the cooling fluid has a direct contact with the rotor bars.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: May 4, 2021
    Assignee: LAPPEENRANNAN-LAHDEN TEKNILLINEN YLIOPISTO LUT
    Inventors: Juha Pyrhönen, Jussi Sopanen