Bearing Or Air-gap Adjustment Or Bearing Lubrication Patents (Class 310/90)
  • Patent number: 11990818
    Abstract: An in-wheel motor for an electric vehicle is provided, including a motor body (1) including a wheel hub (11) on one side, and a sealing apparatus (2) mounted to the motor body (1) on the opposite side to the wheel hub (11), in which the sealing apparatus (2) includes a first support (510) fixedly coupled to a motor shaft (14) of the motor body (1), a second support (520) fixedly coupled to the motor shaft (14) and disposed outside the first support (520), a third support (530) covering an outer surface of the first support (510) and an outer circumferential surface of the second support (520), and rotated when the motor is operated, and a fourth support (540) coupled to an outer surface of the second support (520) and rotated when the motor is operated.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: May 21, 2024
    Assignee: MOTEK INCORPORATED CO., LTD
    Inventors: Jae Woong Chung, Hye-Young Jeong, Mi-Rim Jung
  • Patent number: 11984785
    Abstract: An iron-core linear motor forcer (100) with integrated aerostatic bearing guidance is disclosed. The motor forcer (100) comprises (i) an iron-core (10) enclosed within an enclosure (13) having an upper surface (11) and a bottom surface (12), wherein the iron-core (10) is mounted with a plurality of coil windings (16), and a plurality of air supply channels (50) are provided substantially in vertical from the upper surface (11) to the bottom surface (12) of the enclosure (13), and each of the air supply channels (50) is terminated at the bottom surface (12) with one or more orifices (32); and (ii) a linear motor stator (20) having a stator surface (22). The iron-core linear motor forcer (100) is frictionless moving on the motor stator (20).
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: May 14, 2024
    Assignee: AKRIBIS SYSTEMS PTE LTD
    Inventors: Shien Yang Lee, Wei Jie Tan
  • Patent number: 11984788
    Abstract: An electric motor includes a stator, a rotor having a rotating shaft, first and second bearings each having an outer ring, balls, and an inner ring, and spaced apart axially from each other, a preload washer including a shaft section having a preset fixed length in the axial direction, and an elastically-deformable portion extending from one end portion of the shaft section to be elastically deformable, the preload washer applying a preset intensity of preload to the inner ring of the first or second bearing, and a coupling member screwed into an end portion of the rotating shaft and elastically deforming the preload washer in the axial direction. This structure may result in preventing an excessive preload from being applied to the bearing and allowing a preset preload to be stably maintained when thrust is applied.
    Type: Grant
    Filed: October 8, 2021
    Date of Patent: May 14, 2024
    Assignee: LG Electronics Inc.
    Inventors: Sunghoon Kwak, Hyuk Nam, Sanghoon Park, Seoyoung Jeong, Namgi Kim, Minsoo La
  • Patent number: 11984769
    Abstract: A rotary electric machine system of a combined power system includes a rotary electric machine, a rotary electric machine housing in which the rotary electric machine is accommodated, and a rotation parameter detector that detects a rotation parameter of a rotating shaft constituting the rotary electric machine. The rotating shaft includes a first end part and a second end part, a first bearing is provided between the first end part and the housing, and a second bearing is provided between the second end part and the housing. The first end part includes a protruding distal end that passes through the first bearing and protrudes to an exterior of the housing. The rotation parameter detector is disposed on the protruding distal end.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: May 14, 2024
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Manabu Yazaki, Tatsuya Choji, Naoki Ito
  • Patent number: 11979071
    Abstract: An electric drive for use in an electrohydraulic brake system, including a housing, a stator-rotor unit received by the housing for displacing a piston of a cylinder-piston arrangement to generate a brake pressure and a separate housing insert made of a plastic, which is joined to the housing and is electrically contacted with a stator of the stator-rotor unit. The housing insert encloses a contact arrangement of spaced-apart electrically conducting contact elements for the electrical supply of phases of a coil of the stator, wherein the contact elements are electrically insulated from one other by the plastic.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: May 7, 2024
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventor: Jan Weimar
  • Patent number: 11978481
    Abstract: A motor includes a shaft, a base portion, a stator, and a rotor. The shaft extends along a central axis extending in an axial direction. The base portion extends in a radial direction on one axial direction side of the shaft. The stator is located in another axial direction with respect to the base portion and surrounds the shaft. The rotor is rotatable around the central axis. The rotor includes a rotor tube portion, a magnet, and a rotor flange portion. The rotor tube portion surrounds the stator. The magnet is opposed to the stator in the radial direction. The rotor flange portion extends in a radially outer direction from one axial end portion of the rotor tube portion. The rotor tube portion includes a yoke tube portion and a hub tube portion. The yoke tube portion is located on a radially inside surface of the hub tube portion.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: May 7, 2024
    Assignee: Nidec Corporation
    Inventors: Naoyuki Kimura, Kazuhiro Sato, Tomoki Uchibori
  • Patent number: 11979075
    Abstract: The invention relates to a housing (10) of an electric drive having a stator (29) and a rotor for an electric axle module of an electrically driven vehicle, comprising a cooling duct (56) through which a cooling medium flows. The cooling duct (56) is formed by a first duct geometry (16) on an inner side (13) of a sleeve-shaped extension (11) of the housing (10) and by a second duct geometry (24) configured on a casing (54) of a sleeve (28).
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: May 7, 2024
    Assignee: Robert Bosch GmbH
    Inventors: Wael Mohamed, Michael Wolfgang Goerdeler
  • Patent number: 11962208
    Abstract: Proposed is an air gap adjustment apparatus. The apparatus is for enabling an air gap between the inner surface of a stator and the outer surface of a rotor, which are installed in an inner space of a housing, to be uniform overall. A plurality of fastening holes are formed so as to surround a shaft through hole of an end plate constituting the housing. A fastener, which has passed through a bearing housing of a bearing, is fastened to each fastening hole so as to mount the bearing to the end plate. An adjusting member body of an adjusting member, which has passed through the bearing housing, is positioned in an adjusting member seating part which is formed at the entrance of each fastening hole. The adjusting member rotates about the adjusting member body so that a head part may adjust the position of the bearing.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: April 16, 2024
    Assignee: HYOSUNG HEAVY INDUSTRIES CORPORATION
    Inventors: Chul Jun Park, Sang Deok Kim, Seung Ki Kim, Yoon Zong Kim, Kyo Ho Lee, Kwang Jin Kim, Joo Seob Kim, Bit Na Oh
  • Patent number: 11962218
    Abstract: An electrical machine including a stator, a rotor and a bearing arrangement having a first bearing and a second bearing on opposite sides of the stator as well as a shielding arrangement comprising a first shielding unit and a second shielding unit. The rotor is rotatably supported around a rotation axis by means of bearings. The shielding units are electrically conductive and comprise a ring part in each case that extends originating from a radial inner end to a radial outer end away from the rotation axis. Preferably each shielding unit has a circumferential part on its radial outer end that extends in a continuous ring-shaped manner around rotation axis and is arranged in overlapping manner with the adjacent axial end of stator winding in axial direction. The circumferential parts are preferably completely closed, whereas the ring parts can comprise through holes.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: April 16, 2024
    Assignee: EBM-PAPST MULFINGEN GMBH & CO. KG
    Inventors: Martin Buerkert, Rainer Mueller, Jochen Haefner, Sebastian Schroth
  • Patent number: 11962217
    Abstract: An electric motor includes a stator assembly and a rotor assembly. The rotor assembly includes a rotor shaft that is rotatable relative to the stator assembly about a rotation axis. The motor also includes an endshield, a bearing assembly rotatably supporting the rotor shaft on the endshield, a shaft ground assembly electrically coupled to the rotor shaft, and a bearing lockplate. The bearing lockplate is fixedly coupled to the endshield. The shaft ground assembly is supported by the bearing lockplate on the endshield.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: April 16, 2024
    Assignee: Nidec Motor Corporation
    Inventors: Steven R. Palmer, Chetan O. Modi, Chuck Roessler, John H. Hussey
  • Patent number: 11952133
    Abstract: A motor-integrated fan having an intake port and a blow-out port comprises a rotary part 12 that is rotatably supported by a shaft, and a motor 14 that rotates the rotary part 12. The motor 14 is an outer periphery drive motor that rotates the rotary part 12 by supplying motive power from a duct provided on the outer peripheral side of the shaft. The motor 14 includes: a permanent magnet 45 provided on a rotary support ring 33 connected to the outer peripheral side of blades 32 of the rotary part 12; and a coil 46 provided opposite the permanent magnet 45 in the axial direction of the axis of rotation. Among the plurality of blades 32, a first blade 32a and a second blade 32b are located at different positions in the axial direction.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: April 9, 2024
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventor: Naoaki Fujiwara
  • Patent number: 11945062
    Abstract: A levelling machine includes a pair of spaced apart rail assemblies, a gantry assembly and a face mill assembly. The spaced apart rail assemblies define an x axis. The gantry assembly is moveably attached to the pair of spaced apart rail assemblies whereby the gantry assembly defines a y axis. The gantry assembly is moveable in the x axis along the pair of spaced apart rail assemblies. The face mill assembly is moveably attached to the gantry assembly and is moveable in the y axis along the gantry assembly. The face mill assembly has a plurality of saw blades, the saw blades being generally in an x-y plane defined by the x axis and y axis. The saw blades have a plurality of teeth that extend downwardly generally in a z axis. The face mill assembly is moveable in the z axis.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: April 2, 2024
    Assignee: MARVEL INTEGRATION, LLC
    Inventor: Travis Everett Vap
  • Patent number: 11946482
    Abstract: A vacuum pump and a washer which can reduce vibration of a rotor and the rotor which can reduce the vibration are provided. When an inertia moment ratio which is a ratio between the inertia moment around a z-axis and the inertia moment around an x-axis or a y-axis is larger than 1, a natural frequency ?2 does not match a rotational frequency ?z but goes away from that. When the natural frequency ?2 matches the rotational frequency ?z, the rotor vibrates and thus, a fatigue failure occurs in a rotor blade. When the rotor is to be made larger in a radial direction of a rotating shaft, a value of the inertia moment ratio is set to a value larger than 1.
    Type: Grant
    Filed: July 3, 2020
    Date of Patent: April 2, 2024
    Assignee: Edwards Japan Limited
    Inventors: Katsuhisa Yokozuka, Yoshinobu Ohtachi, Yasushi Maejima, Tsutomu Takaada
  • Patent number: 11942836
    Abstract: A shaft grounding arrangement (X) includes a housing (GG), a shaft (W, GW2, DS1, DS2) supported in the housing (GG), a shaft grounding device (E) for establishing an electrically conductive contact (SK) between the shaft (W, GW2, DS1, DS2) and the housing (GG), and a covering element (C) fixedly connected to the shaft (W, GW2, DS1, DS2) for protecting the shaft grounding device (E) against environmental influences. The covering element (C) at least partially surrounds the shaft grounding device (E). The shaft grounding device (E) is fixedly connected to the housing (GG). The electrically conductive contact (SK) is formed by a sliding contact between contact elements (EK) of the shaft grounding device (E) and a surface of the covering element (C). A transmission (G) may include the shaft grounding arrangement (X) of this type, and an electric axle drive (EA) may include the transmission (G).
    Type: Grant
    Filed: October 5, 2021
    Date of Patent: March 26, 2024
    Assignee: ZF Friedrichshafen AG
    Inventor: Michael Griesbach
  • Patent number: 11936254
    Abstract: An electrical machine includes a non-rotating part, a rotating part, at least one bearing that includes a rotating ring and a non-rotating ring and supports the rotating part, a grounding brush fixed and secured to the non-rotating part, and having a free end extending towards the rotating ring of the bearing, and a conductive layer covering a portion of a surface of the rotating ring of the bearing such that the free end of the grounding brush is in contact with the conductive layer.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: March 19, 2024
    Assignee: AKTIEBOLAGET SKF
    Inventors: Mathieu Hubert, Paul Feliciano, Thomas Perrotin, Anthony Simonin
  • Patent number: 11933316
    Abstract: A blower includes a moving blade rotatable about a central axis, a motor to rotate the moving blade, a housing, and a substrate. The housing includes a holding portion below the moving blade to hold the motor, and a peripheral wall portion having a cylindrical shape extending upward from a radially outer end portion of the holding portion. The peripheral wall portion includes a peripheral wall recess recessed downward from an upper end of the peripheral wall portion and connecting a space radially inside and a space radially outside of the peripheral wall portion. The peripheral wall recess includes a first peripheral surface that opposes one circumferential direction opposite to a rotation direction of the moving blade, the first peripheral surface extending from an upper end of the peripheral wall recess toward a lower side of the peripheral wall portion.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: March 19, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Yuta Tokuno, Hideki Aoi
  • Patent number: 11923744
    Abstract: The present disclosure provides a brushless direct drive linear servo actuator, comprising: a stator, a mover and a housing, wherein the stator is a pair of armatures arranged in mirror symmetry at both sides of the mover, the housing integrally encapsulates the stator and forms a cavity for the mover at the mover, and the mover has an output end protruding out of the housing and is linearly movable along a direction of the output end. A displacement signal emitter is provided at a side of the mover, and a signal receiver is provided within a cover arranged outside the housing on said side for detecting a displacement signal emitted by the emitter of the mover. The actuator of the present disclosure is characterized by high reliability, high accuracy and low cost.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: March 5, 2024
    Assignee: FUGNA MECHATRONICS CO., LTD.
    Inventors: Haifeng Zhang, Chengjiong Ying
  • Patent number: 11919131
    Abstract: A hydraulically actuated working device having a hydraulic cylinder, a hydraulic piston that can be displaced in the hydraulic cylinder, a drive unit part which has a motor and a pump, and a hydraulic line leading to the hydraulic cylinder. The drive unit part is designed in an electrically insulating manner, to provide an electrically insulating separating layer, which passes through the working device in a crossing manner for electrical separation from the working device part with respect to an end of the hydraulic piston facing the drive unit part. The hydraulic line is guided through the separating layer, thereby also forming a partial region of the hydraulic line made of an electrically insulating material.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: March 5, 2024
    Assignee: GUSTAV KLAUKE GMBH
    Inventor: Egbert Frenken
  • Patent number: 11916446
    Abstract: A rotor for an electric machine includes a rotor assembly having an outer surface and including a plurality of poles with permanent magnets. A solid layer is formed on the outer surface of the rotor assembly and has an outer surface with a first coefficient of friction that is lower than a second coefficient of friction of the outer surface of the rotor assembly. The rotor includes an outer sleeve. The rotor assembly is press-fit into the outer sleeve.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: February 27, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Anthony Michael Coppola, Alireza Fatemi, Derek Frei Lahr, Kestutis A. Sonta, Alan G. Holmes
  • Patent number: 11906024
    Abstract: A vehicle drive device includes: a rotating electrical machine that functions as a driving force source for wheels; an input member drivingly connected to rotating electrical machine; a pair of output members each drivingly connected to wheel; a differential gear mechanism that distributes rotation transmitted from rotating electrical machine to pair of output members; a transmission gear mechanism that drivingly connects input member and differential gear mechanism; a hydraulic pump that includes a pump rotor and chamber housing the pump rotor and that supplies oil to at least the rotating electrical machine; and a case. The case includes a partition portion that separates in an axial direction a first housing chamber housing rotating electrical machine and a second housing chamber housing transmission gear mechanism and differential gear mechanism). Pump chamber is formed in partition wall so as to be located between first and second housing chambers in the axial direction.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: February 20, 2024
    Assignee: AISIN CORPORATION
    Inventor: Ryohei Inoue
  • Patent number: 11904460
    Abstract: A robot linear-object unit includes: a first part including cables, which lead to motors, that are covered by a flexible sheath having a circular outer shape in cross section; a second part including the cables in a loose state at one end of the first part; a plurality of third parts each including one or more of the cables of the second part bundled together for a connector connected to corresponding one of the motors, the third parts being covered by flexible covering materials having circular outer shapes in cross section; and a casing that accommodates the second part and is fixed to a movable part. The casing is provided with a plurality of through holes that allow the first and the third parts to pass through the casing. Spaces between the through holes, the sheath, and the covering materials are fixed in a liquid-tight state by cable glands.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: February 20, 2024
    Assignee: FANUC CORPORATION
    Inventors: Naoki Fujioka, Yuuto Tochio
  • Patent number: 11903161
    Abstract: Particular embodiments described herein provide for an electronic device that can be configured to include a fan where the fan blades are decoupled from the center shaft. The fan can include a center shaft, a motor coil support, motor coils coupled to the motor coil support, a rotator coupled to the center shaft, and fan blades coupled to the rotator, where rotation of the fan blades is decoupled from the center shaft by the rotator. A blade support can be coupled to the rotator, where the blade support couples the fan blades to the rotator and magnets can be coupled to the blade support. In an example, the rotator can include an inner, an outer race, and bearings.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: February 13, 2024
    Assignee: Intel Corporation
    Inventors: Srinivas Rao Konakalla, Prakash Kurma Raju, Bijendra Singh, Juha Tapani Paavola, Prasanna Pichumani
  • Patent number: 11897185
    Abstract: The present disclosure relates to a system for manufacturing a hybrid component including a first thermal supplier configured to heat a steel plate, a rolling roll for undercut configured to pressurize the steel plate heated by the first thermal supplier, and to form an undercut on one surface of the steel plate, a first molding roll configured to pressurize the steel plate formed with the undercut to mold the steel plate in a shape of a component to be manufactured, a composite material feeder configured to supply a composite material tape to be seated on one surface of the steel plate formed with the undercut through the first molding roll, and a composite material pressurization roll configured to pressurize the steel plate on which the composite material tape is seated.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: February 13, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventor: Youn-Il Jung
  • Patent number: 11892033
    Abstract: A motor according to the present application includes a rotating shaft, a bearing, a bearing holder configured to accommodate the bearing, a holder disposed at one end portion side of the bearing holder in a rotating shaft direction, and a lid disposed at another end portion side of the bearing holder in the rotating shaft direction. A labyrinth structure is formed of one end portion of the bearing holder and an inner peripheral portion of the holder, and/or a labyrinth structure is formed of the rotating shaft and the lid.
    Type: Grant
    Filed: February 21, 2022
    Date of Patent: February 6, 2024
    Assignee: MINEBEA MITSUMI Inc.
    Inventor: Seiya Fujimoto
  • Patent number: 11894735
    Abstract: A manufacturing method of fan stator structure includes the steps of providing a fan stator; providing a plurality of coil lead wire holders at an end of the fan stator; and winding lead wires on the fan stator to form coils, and setting and connecting a front end and a back end of each of the lead wires to the coil lead wire holders. The above method eliminates the drawbacks of the conventional fan stator coil winding operation, such as requiring manual twisting and trimming of the lead wire front ends and back ends and leaking of tin solder occurred during welding of the lead wires to a circuit board.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: February 6, 2024
    Assignee: ASIA VITAL COMPONENTS (CHINA) CO., LTD.
    Inventors: Yeh-Chih Lu, Hsin-Hung Chen
  • Patent number: 11892071
    Abstract: A bearing unit includes: a thrust damper extendable in an axial direction of a shaft placed in a gearbox, the movement of which toward one side in the axial direction is regulated; a shaft receiver component held by the thrust damper on the other side of the thrust damper in the axial direction; a metal holder that holds the shaft receiver component in such a manner as to be detachable in the axial direction; and an oilless metal held by the metal holder and placed on the other side of the shaft receiver component, in which the thrust damper, the shaft receiver component, the metal holder, and the oilless metal are integrated all together before being incorporated into the gearbox.
    Type: Grant
    Filed: October 14, 2022
    Date of Patent: February 6, 2024
    Assignee: MABUCHI MOTOR CO., LTD.
    Inventor: Kazuyuki Yamamoto
  • Fan
    Patent number: 11879475
    Abstract: A fan includes a motor base, a bearing, an impeller, a stator and a magnetic element. The motor base has a bearing stand in a center portion thereof. The impeller includes a metallic case, plural blades and a rotating shaft. A top surface of a top wall of the metallic case continuous with curved surface that defines part of a central opening, and a depth of the central opening is equal to a thickness of the top wall. The blades are disposed around an outer periphery of said metallic case. The rotating shaft is inserted into the central opening and penetrated through the bearing stand, wherein no raised ring structure is formed in the top wall, and the rotating shaft and the metallic case are jointed together by a laser welding process. The magnetic element is disposed on an inner wall of the metallic case and aligned with the stator.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: January 23, 2024
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chiu-Kung Chen, Chao-Wen Lu
  • Patent number: 11873897
    Abstract: A drive apparatus includes a motor that has a motor shaft extending in an axial direction, a transmission mechanism that is connected on one side in the axial direction of the motor shaft, a lock mechanism that restricts driving of the transmission mechanism, a housing that houses the motor, the transmission mechanism, and the lock mechanism, an oil that is stored in the housing, and an oil passage that circulates the oil. The housing includes a motor room that houses the motor, a gear room that houses the transmission mechanism and the lock mechanism, and a partition that is provided between the motor room and the gear room. The oil passage includes a pump that pumps the oil in the oil passage, a first feed flow passage that feeds the oil to the motor, and a second feed flow passage that feeds the oil to the lock mechanism.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: January 16, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Shuhei Nakamatsu, Shinsuke Mizukami, Tsubasa Tamura, Keisuke Aso
  • Patent number: 11863027
    Abstract: A rotating electrical machine and a method of manufacturing a rotating electrical machine. The machine including a machine frame, a rotor, a shaft attached to the rotor and bearings supporting the shaft and the rotor in the machine frame. The rotating electrical machine includes further an electrically conducting member having a hole, the electrically conducting member being attached to the frame such that the shaft extends through the hole.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: January 2, 2024
    Assignee: ABB Schweiz AG
    Inventor: Kari Tikkanen
  • Patent number: 11863043
    Abstract: A rotary electric machine includes a rotor having a hollow shaft, a housing, a current shunter fixed to the housing and in electrical contact with the shaft and the housing, and a nozzle member for feeding a fluid inside the shaft. The shaft has an open end portion on a first axial side. The housing includes a bottom wall on the first axial side from the open end portion, and a peripheral wall protruding from the bottom wall toward a second axial side and surrounding the open end portion. The nozzle member has a feeding tubular part at least partly inserted inside the shaft from the open end portion, and a flange portion protruding radially outward from the feeding tubular part. The current shunter is located radially inside the peripheral wall, and the flange portion is located between the current shunter and the bottom wall in an axial direction.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: January 2, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Keisuke Nakata, Yuki Ishikawa
  • Patent number: 11863030
    Abstract: A motor and a fan are provided. The motor has a stator assembly, two mutually independent rotor assemblies, and two mutually independent rotating shaft assemblies. The stator assembly has a stator core and two groups of mutually independent windings. The rotor assemblies are oppositely and coaxially arranged on two axial sides of the stator assembly and form an axial air gap with the stator assembly. The two rotor assemblies are configured to rotate independently. The two mutually independent rotating shaft assemblies are coaxially connected with the two rotor assemblies, respectively, and protrude in a direction of the same side away from the stator core along the axial direction of the motor.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: January 2, 2024
    Assignee: MIDEA WELLING MOTOR TECHNOLOGY (SHANGHAI) CO., LTD.
    Inventors: Ping Li, Yiming Hu, Guyu Wu, Di Wu, Liming Gong
  • Patent number: 11855508
    Abstract: Provided is a waterproof motor for preventing external liquid from entering a housing thereof. The waterproof motor includes a housing, a motor shaft, a bearing, a motor packing, and a motor shaft O-ring provided between the motor packing and the bearing, wherein the motor shaft O-ring has a through hole formed in the center of a body part so that the motor shaft is inserted thereinto, projection parts are formed on the inner wall surface of the through hole toward the center of the through hole so as to be elastically deformed while outer surfaces of the projection parts come into contact with the outer surface of the motor shaft, and a storage groove is formed between the projection parts and stores lubricating oil such as grease.
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: December 26, 2023
    Assignee: DUKSHIN CORP., LTD.
    Inventor: Chanil Park
  • Patent number: 11846318
    Abstract: A system for controlling shaft displacement within a support structure, the system having a rotatable shaft, at least one bearing supporting the shaft, the at least one bearing having an inner race rotatable along with the shaft and an outer race circumferentially surrounding the inner race, an electromagnet assembly positioned about the shaft along a longitudinal axis thereof, and a controller that detects a radial motion of the shaft and determines a corrective force to reduce the radial motion of, or a parameter related to, the shaft, the controller commanding the electromagnet assembly to generate the corrective force to act on the shaft, the electromagnet assembly having a plurality of phases spaced circumferentially about the shaft, the controller commanding different phases of the electromagnet assembly to generate the corrective force so that a vector of the corrective force rotates about the longitudinal axis of the shaft.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: December 19, 2023
    Assignee: LORD Corporation
    Inventors: Mark R. Jolly, Victor M. Zaccardo, Paul R. Black, Daniel E. Kakaley, Russell E. Altieri
  • Patent number: 11845170
    Abstract: A power tool has a motor, a rotary shaft and a housing. The rotary shaft has a first end portion on a first direction side and a second end portion on a second direction side in an axial direction of the rotary shaft. The housing is configured to store a lubricant on the first direction side of the first end portion of the rotary shaft. The rotary shaft has a first hole and a second hole. The first hole extends in the axial direction and that has a first opening in the first end portion of the rotary shaft. The second hole extends in a direction crossing an axis of the rotary shaft, that communicates with the first hole. The second hole has a second opening in an outer peripheral surface of the rotary shaft. A spiral part is provided within the first hole.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: December 19, 2023
    Assignee: MAKITA CORPORATION
    Inventors: Yoshitaka Machida, Taro Hisano
  • Patent number: 11843304
    Abstract: An electric assembly includes: a box assembly, a motor, and a transmission. A mounting plate is disposed in the box assembly and divides a space within the box assembly into a motor holding cavity and a transmission holding cavity arranged along an axial direction of a motor shaft. The mounting plate has a shaft via-hole making the motor holding cavity and the transmission holding cavity be in communication. The motor is disposed in the motor holding cavity. The transmission is disposed in the transmission holding cavity. The motor is power-coupled to the transmission. At least one of a surface of the mounting plate facing the motor and a surface of the mounting plate facing the transmission is provided with ribs including strip-shaped ribs extending along a radial direction of the motor. Heights of the strip-shaped ribs decrease from a center portion of the mounting plate to a periphery portion of the mounting plate.
    Type: Grant
    Filed: February 15, 2023
    Date of Patent: December 12, 2023
    Assignee: BYD COMPANY LIMITED
    Inventors: Guangquan Chen, Daqi Chen, Longfei Wei, Xin Wen
  • Patent number: 11841024
    Abstract: Described herein are appliances such as a vacuum cleaners having an air flow passage and a fan assembly provided in the air flow passage. The fan assembly includes (a) a first motor comprising a first rotor, a first stator, and a first rotatable output shaft drivingly connected to the first rotor; and (b) a second motor comprising a second rotor, a second stator, and a second rotatable output shaft drivingly connected to the second rotor. The first rotatable output shaft is driving connected to the second stator; and a fan blade drivingly connected to the second rotatable output shaft. Also described herein are methods of energizing a fan assembly of a portable appliance.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: December 12, 2023
    Assignee: Omachron Intellectual Property Inc.
    Inventor: Wayne Ernest Conrad
  • Patent number: 11828098
    Abstract: A drive device for adjusting a covering element of a vehicle includes an output element for adjusting the covering element; a motor unit that has an electric motor with a stator, a rotor, and an input shaft that is connected to the rotor and is rotatable about a shaft axis for driving the output element; and a drive housing that at least partially encloses the motor unit. The stator is connected via a bearing element to a stationary housing section of the drive housing, wherein the bearing element has a bearing opening in which the input shaft is supported such that it can rotate relative to the stator.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: November 28, 2023
    Assignee: BROSE FAHRZEUGTEILE GMBH & CO. KOMMANDITGESELLSCHAFT, WUERZBURG
    Inventor: Gabriele Lange
  • Patent number: 11817759
    Abstract: The electric machine includes a shaft, a rotor, a stator, and a frame. The shaft is supported rotatably on the frame with an axially locating sleeve bearing at each axial end of the shaft. The axial play limiting the axial movement of the shaft is greater in one of the two axially locating sleeve bearings compared to the axial play in the other of the two axially locating sleeve bearings. An axial movement of the shaft is limited only by the bearing with the smaller axial play during normal operational circumstances and by both bearings during exceptional events, the bearing with the greater axial play reducing the axial load of the first bearing in such exceptional events.
    Type: Grant
    Filed: January 5, 2022
    Date of Patent: November 14, 2023
    Assignee: ABB SCHWEIZ AG
    Inventors: Janne Kamppuri, Samu Aarnivuo
  • Patent number: 11811274
    Abstract: The present invention is directed to a power generation machine or device, comprising permanent magnets, a three-phase system, bifilar coils and a magnet arrangement disposed axially to the generator rotor; and comprising a system embedded by magnetic pulse control software for the moment of magnetic collapse or generation of electric power peaks or valleys, whereby a set of sensors detect the precise angular moment in which the coils have stored the maximum magnetic energy and then trigger their magnetic collapse or generation of electric power peaks or valleys by a switching process controlled by the signals coming from said sensors. All these elements are arranged in the rotor and circumferential stator, which generates electrical energy when moving.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: November 7, 2023
    Assignee: Magnetech S.A.C.
    Inventor: Jose Illanes
  • Patent number: 11802576
    Abstract: A fan device includes a fan frame and a fan impeller. The fan frame includes a frame and a shaft seat. The shaft seat includes a shaft tube and a buffer. At least a part of the buffer is clamped between the shaft tube and the frame. The fan impeller is rotably disposed on the shaft tube of the shaft seat. An elastic coefficient of the buffer is larger than an elastic coefficient of the shaft tube.
    Type: Grant
    Filed: January 17, 2023
    Date of Patent: October 31, 2023
    Assignee: VAST GLORY ELECTRONICS & HARDWARE & PLASTIC (HUI ZHOU) LTD.
    Inventors: Jiasheng Lai, Shi Man Xu
  • Patent number: 11799360
    Abstract: A linear electrical machine (LEM) comprising a stator mounted in a housing, the housing and stator defining a working cylinder, a central core within the working cylinder and defining a cylindrical stator bore cavity therebetween, a hollow translator axially movable within the working cylinder, extending into the stator bore cavity and forming an exterior magnetic circuit airgap between the translator and the stator, at least one fluid bearing between the central core and the translator providing a bearing gap, wherein the central core is axially fixed in relation to the stator, wherein the at least one fluid bearing provides coaxial location of the translator and central core.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: October 24, 2023
    Assignee: Libertine FPE Ltd
    Inventors: Edward Haynes, Samuel Cockerill
  • Patent number: 11799349
    Abstract: The present invention may provide a motor including a rotary shaft, a yoke coupled to the rotary shaft, a stator disposed between the rotary shaft and the yoke, a magnet disposed between the stator and the yoke, a bearing housing disposed between the stator and the rotary shaft, a first bearing disposed between the yoke and the bearing housing, and a second bearing disposed between the bearing housing and the rotary shaft, wherein the stator includes a stator core and a first insulator and a second insulator which are coupled to the stator core, a portion of the first insulator is disposed between the first bearing and the stator core, and a portion of the second insulator is in contact with the bearing housing.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: October 24, 2023
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Young Dae Park
  • Patent number: 11794520
    Abstract: A conductive caster wheel is adapted to be mounted on a cart. The conductive caster wheel includes a caster hub adapted to be sleeved on a bearing of the cart, a wheel body sleeved on the caster hub, and a conductive plate disposed inside the caster hub and the wheel body. The conductive plate has an inner conductive section and an outer conductive section. The inner conductive section is exposed from an inner surrounding surface of the caster hub, and is adapted to be electrically connected to the bearing. The outer conductive section is electrically connected to the inner conductive section, is exposed from an outer surrounding surface of the wheel body, and is adapted to be in contact with a ground surface.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: October 24, 2023
    Inventor: Chung-Hsiu Su
  • Patent number: 11791688
    Abstract: The hollow shaft motor according to the present invention comprises: a housing 11 having a cylindrical shape; an upper cover 12 coupled to an upper portion of the housing 11; a lower cover 15 coupled to a lower portion of the housing 11; a stator assembly 20 located in the housing 11; and a rotor assembly 30 located in the stator assembly 20 to rotate, wherein the rotor assembly 30 comprises a hollow shaft 31, a rotor core 32 coupled to an outer circumference of the hollow shaft 31, and a plurality of magnets 33 attached to an outer circumference of the rotor core 32.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: October 17, 2023
    Assignee: BMC CO., LTD.
    Inventors: Ok Yun Kim, Kea Ho Lee, Haeng Chul Sin, Gwan Seon Jeong
  • Patent number: 11791675
    Abstract: A housing for a rotary electric machine having stacked laminations forming a stator core includes a first portion forming a slip fit with a first series of the stacked laminations. A second portion forms an interference fit with a second series of the stacked laminations.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: October 17, 2023
    Assignee: LC Advanced Motor Technology Corporation
    Inventors: Dylan Broomfield, Russel Hugh Marvin, Matthew Honickman
  • Patent number: 11777362
    Abstract: A motor includes a stator that includes a stator core around which a stator winding is wound; magnets; a rotating body; a shaft; a rotor; a first bearing; a second bearing; a first metal bracket that fixes the first bearing; and a second metal bracket that fixes the second bearing. The stator core, the first metal bracket, and the second metal bracket are electrically connected, and when a connection point between the stator core and the first metal bracket or the second metal bracket is defined as a connection point A of a bearing outer ring, a capacitive member having a capacitance Cn is located between a portion having the same potential as the connection point A and a portion having a zero reference potential of a drive circuit that applies a voltage to the stator core.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: October 3, 2023
    Assignee: WOLONG ELECTRIC GROUP CO., LTD.
    Inventors: Tatsuo Maetani, Yoshinori Isomura, Feng Hu
  • Patent number: 11764627
    Abstract: An electric machine including a shaft, a rotor back assembly surrounding a portion of the shaft, and two or more permanent magnets radially positioned around the perimeter of the rotor back assembly. The electric machine also includes a rotor fan with multiple fan blades formed in an exterior surface of the rotor back assembly and one or more ventilation channels extending through the rotor back assembly. Methods of exporting heat from an electric machine, wither from a machine housing or through the shaft is also disclosed. The heat exportation methods feature the circulation of a fluid with the rotor fan through the ventilation channels and into contact with the housing, or exporting heat from the rotor back assembly through the shaft.
    Type: Grant
    Filed: May 2, 2022
    Date of Patent: September 19, 2023
    Assignee: Zero-E Technologies
    Inventors: Thomas H. Hopkins, Felipe J. Castillo, Scott T. Graham, Keith W. Klontz
  • Patent number: 11764637
    Abstract: An inner-rotor motor including: an armature assembly including a rotating shaft, an armature unit coupled to the rotating shaft and a pressing unit; a frame assembly including a frame housing the armature unit, a first bearing unit located on one side with respect to the armature unit in an axial direction, and a second bearing unit located on another side with respect to the armature unit in the axial direction; and an urging structure that urges the rotating shaft in a direction away from the second bearing unit and that presses the pressing unit toward the first bearing unit.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: September 19, 2023
    Assignee: MINEBEA MITSUMI Inc.
    Inventors: Hiroaki Mochizuki, Minoru Kuroda
  • Patent number: 11764638
    Abstract: A rotary electric machine system includes a rotary electric machine including a rotating shaft, and a housing for housing the rotary electric machine. A first bearing and a second bearing are provided between the housing and the rotating shaft. Gas supplied from a gas supply source that is located outside of the housing flows with a terminal casing for housing electric terminal portions as an upstream side and the housing as a downstream side. Further, the first bearing and the second bearing are disposed in a flow path within the housing.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: September 19, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Manabu Yazaki, Tatsuya Choji
  • Patent number: 11764639
    Abstract: The invention relates to a bearing cap (10) and an electric motor (M) utilizing the same. The bearing cap (10) has a first annular protrusion (18) configured for fixing to a corresponding annular groove (27) of an axial end of the bearing seat (13) by an adhesive. The first annular protrusion (18) has a plurality of first cuts (28). With the bearing cap (10), sand or other impurities can be prevented from entering the bearing seat (13).
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: September 19, 2023
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Marco Mastrototaro, Nicola Re