Rotor Patents (Class 29/598)
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Patent number: 12224633Abstract: A auxiliary device for bonding a casing and magnets, comprising a press (10) and a housing positioning seat (2), the press (10) including a press block (12). A vertically arranged raising and lowering rod (3) is provided below the press block (12), the raising and lowering rod (3) being supported on the housing positioning seat (2) by means of an elastic piece. A plurality of push plates (4) are provided on the circumferential side of the raising and lowering rod (3), the push plates (4) being slidingly mated on the housing positioning seat (2) along the radial direction of the raising and lowering rod (3). The raising and lowering rod (3) moves up and down in order to cause the push plates (4) to move in the radial direction of the raising and lowering rod (3), and the sides of the push plates (4) away from the raising and lowering rod (3) are provided with contact faces used to make contact with magnets.Type: GrantFiled: September 22, 2020Date of Patent: February 11, 2025Assignee: HENGDIAN GROUP INNUOVO ELECTRIC CO., LTD.Inventors: Zhonghua Wei, Kedi Shan, Junjian Lu, Jianhua Chen, Hangdong Tang
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Patent number: 12199472Abstract: Main technical features of an iron core structure of motor rotor provided by the invention are that on a rotor iron core of a rotating motor, along a circumferential direction of a rotation axis of the motor as a center of circle, a plurality of through-hole-shaped spaces spaced apart from each other are arranged on the iron core in sequence. When the through-hole-shaped spaces form obstacles to a magnetic circuit in the rotor, the through-hole-shaped spaces are also provided for insertion of a plurality of straight rod-shaped coupling elements made of non-permeability magnetic material to fix an overlapping state of a plurality of silicon steel plates of the iron core in order to improve an overall rigidity of the iron core and reduce a possibility of deformation or damage of the silicon steel plates caused by centrifugal force of high-speed rotation.Type: GrantFiled: August 3, 2022Date of Patent: January 14, 2025Assignee: HIWIN MIKROSYSTEM CORP.Inventors: Yu-Cheng Nien, Yuan-Kai Lin
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Patent number: 12191715Abstract: A permanent magnet rotor structure for an underwater motor, an underwater motor and underwater equipment, related to the field of motors. The permanent magnet rotor structure for the underwater motor includes a rotor end cover; a plurality of permanent magnets arranged on an inner circumferential surface of the rotor end cover; a protective attachment structure arranged on surfaces of the plurality of permanent magnets; and an adhesive layer for adhering the protective attachment structure to the surfaces of the plurality of permanent magnets and covering the protective attachment structure. The permanent magnet rotor structure has characteristics of corrosion resistance and wear resistance, so that the service life of the underwater motor comprising the permanent magnet rotor structure can be prolonged.Type: GrantFiled: November 20, 2020Date of Patent: January 7, 2025Assignee: DEEPINFAR OCEAN TECHNOLOGY INC.Inventors: Jiancang Wei, Chao Chen
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Patent number: 12184125Abstract: A rotor includes magnets and a core including arcuately arranged pole segments. Each pole segment includes first and second prongs that extend away from the rotor axis and are at least in part arcuately spaced apart to define a cutout therebetween. Each pair of arcuately adjacent pole segments defines therebetween a respective magnet-receiving slot, with the first prong of one of the pole segments and the second prong of the other of the pole segments defining the slot. The magnets are received in slots, such that each of the magnets is at least in part interposed between one of the pairs of adjacent pole segments. The magnets and the pole segments are dimensioned and configured so that at least one of the first and second prongs is deflected by the magnet received in the respective slot, such that the prongs cooperatively apply a clamping force on the magnet.Type: GrantFiled: September 27, 2023Date of Patent: December 31, 2024Assignee: Nidec Motor CorporationInventors: John M. Tucker, Lunjie Lu
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Patent number: 12176770Abstract: According to one disclosed method, a magnet segment may be slid linearly along a first surface and onto a second surface of a back iron of a rotor, wherein the first surface is disposed at or above a rim that extends upwardly from the second surface at an outer edge of the back iron to enable the magnet segment to slide over the rim before the magnet segment is slid onto the second surface. According to another disclosed method, a first end of a magnet segment may be pressed against an elastic member located at an inner portion of a back iron for a rotor so that force exerted by the elastic member pushes a second end of the magnet segment against a rim located at an outer portion of the back iron.Type: GrantFiled: January 29, 2024Date of Patent: December 24, 2024Assignee: E-Circuit Motors, Inc.Inventor: George Harder Milheim
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Patent number: 12176778Abstract: In a rotating electric machine that includes an armature with an armature coil, the armature coil is formed by winding an electrical conductor wire. The electrical conductor wire includes a plurality of element wires in a bundled state and an insulating coat covering the bundled element wires. Each of the element wires includes an electrical conductor through which electric current flows, and a fusing layer that covers a surface of the electrical conductor. In the bundled state of the element wires, the fusing layers of the element wires are in contact with and fused to one another. Between adjacent parts of the electrical conductor wire wound to form the armature coil, there are formed gaps due to differences in straightness between different parts of the electrical conductor wire. The gaps are filled with a filler.Type: GrantFiled: May 11, 2022Date of Patent: December 24, 2024Assignee: DENSO CORPORATIONInventor: Yuki Takahashi
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Patent number: 12176761Abstract: An aspect of the present invention provides a rotor rotatable about a central axis, the rotor including: a rotor core having a ring shape; a rotor magnet fixed to a radially outer face of the rotor core; and a protective member circumferentially wound around the rotor magnet to press the rotor magnet from radially outward of the rotor magnet. The rotor magnet includes a hanging portion on which a first end of the protective member is hung circumferentially.Type: GrantFiled: November 25, 2019Date of Patent: December 24, 2024Assignee: NIDEC CORPORATIONInventor: Tatsuki Shigeta
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Patent number: 12149144Abstract: Apparatus, systems, and methods used to produce linear and rotational motion, acceleration, and actuation by the use of mobile ferromagnetic or permanent magnets subjected to asymmetric electromagnetic field distributions are disclosed herein. A variety of exemplary embodiments and applications are described, involving different coil and actuator geometries to include and allow for both stationary and moving magnets, electric fields, and magnetic fields.Type: GrantFiled: July 25, 2023Date of Patent: November 19, 2024Inventor: Thomas Alexander Johnson
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Patent number: 12149140Abstract: An electric motor assembly includes a stator and a rotor configured to rotate relative to the stator. The stator includes a stator core including a yoke that has a ring shape and a plurality of teeth radially coupled to an inner surface of the yoke, a stator coil that is wound around the stator core, and an insulator disposed between the stator core and the stator coil. The insulator includes a yoke insulator that is coupled to the yoke with a first coupling tolerance defined between the yoke insulator and the plurality of tooth insulators, and a plurality of tooth insulators that are coupled to the plurality of teeth, respectively, with a second coupling tolerance defined between the yoke and the plurality of teeth. The first coupling tolerance is less than the second coupling tolerance.Type: GrantFiled: June 27, 2023Date of Patent: November 19, 2024Assignee: LG Electronics Inc.Inventors: Joohang Kang, Hyeonho Ha, Yongdae Kim, Jin Hong
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Patent number: 12131853Abstract: An apparatus for manufacturing a rotor includes a magnetizer. The magnetizer is configured to magnetize a permanent magnet in a rotor from outside the rotor. The rotor includes a rotor core having a magnet insertion hole. The permanent magnet is provided in an embedded state in the magnet insertion hole and has a bent-back shape protruding radially inward. The magnetizer includes a first yoke portion, a second yoke portion, and a magnetization coil. The first yoke portion has an opposing portion facing an outer peripheral surface of the rotor. The second yoke portion forms a magnetic path together with the first yoke portion. The magnetization coil is disposed on the magnetic path of the first and second yoke portions. The magnetizer magnetizes the permanent magnet by energizing the magnetization coil to apply a magnetizing magnetic flux at least through the rotor between the first yoke portion and the second yoke portion, which are located opposed to each other in a radial direction of the rotor.Type: GrantFiled: September 27, 2022Date of Patent: October 29, 2024Assignee: DENSO CORPORATIONInventors: Masaru Harada, Ritsurou Hiramatsu, Toshihiro Uchida
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Patent number: 12132361Abstract: This rotor core manufacturing method includes a step of retracting a resin injection portion of a resin injection apparatus relative to a stacked core that remains pressed by a jig, while maintaining a resin material stored in the resin injection portion in a molten state.Type: GrantFiled: September 23, 2020Date of Patent: October 29, 2024Assignee: AISIN CORPORATIONInventors: Tomoko Hiramatsu, Akinori Hoshino, Naotaka Hayashi, Tomoyasu Hirano
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Patent number: 12126218Abstract: A rotor for a rotating electrical machine includes a rotor core body that includes a bridge through which a first inner surface is connected to a second inner surface of an innermost flux barrier when the rotor core body is viewed in an axial direction of a rotor core. The innermost flux barrier has an outer-side closed space that is a defined space and is formed between the bridge and an outer periphery of the rotor core body. The outer diameter closed space is filled, in the axial direction of the rotor core body, with a reinforcing part that is made of a non-magnetic material.Type: GrantFiled: November 17, 2020Date of Patent: October 22, 2024Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventor: Masaki Saijo
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Patent number: 12100546Abstract: A method for producing a magnetic core for an electromagnetic actuator of an electromagnetic valve train includes punching a core blank from a soft magnetic metal sheet and reshaping the core blank. The core blank has a base segment with an opening and a plurality of wall segments that extend outwardly from an outer edge of the base segment. The plurality of wall segments is bent in a direction substantially perpendicular to the base segment during the reshaping.Type: GrantFiled: January 10, 2019Date of Patent: September 24, 2024Assignee: Federal-Mogul Valvetrain GmbHInventors: Johannes Knust, Olaf Josef, Guido Bayard
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Patent number: 12081084Abstract: A manufacturing method for a motor core in which a magnet is fixed in a magnet accommodating portion using synthetic resin material includes: a fixing step of fixing the a permanent magnet in the a magnet accommodating portion using a synthetic resin material, wherein the fixing step includes: an injection step of setting a temperature of the synthetic resin material to a first temperature and injecting, with an injection device having a container capable of maintaining the synthetic resin material in the softened state, the softened synthetic resin material into the magnet accommodating portion; and a curing step of raising the temperature of the synthetic resin material injected into the stacked body to a second temperature to cure the synthetic resin material, with the injection device being moved away from the stacked body.Type: GrantFiled: March 26, 2020Date of Patent: September 3, 2024Assignee: AISIN CORPORATIONInventors: Tomoko Hiramatsu, Akinori Hoshino
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Patent number: 12062945Abstract: Techniques described here provide a rotor and a method of making a rotor. In an embodiment, a method of making a rotor includes forming a magnet array by assembling a plurality of magnets into the magnet array, providing pre-preg adjacent to the magnet array, co-curing the magnet array with the pre-preg, and magnetizing the magnet array subsequent to the formation of the magnet array.Type: GrantFiled: June 1, 2021Date of Patent: August 13, 2024Assignee: Wisk Aero LLCInventor: Geoffrey Alan Long
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Patent number: 12046952Abstract: A rotor of an electric machine includes: N pole pieces, each of the N pole pieces including two half pole pieces, where N is an integer greater than 2; apertures through the half pole pieces, respectively; permanent magnets disposed within the apertures, respectively, the permanent magnets including, in each of the N pole pieces, a first permanent magnet of a first magnetic polarity and a second permanent magnet of a second magnetic polarity; and structural non-magnetic portions disposed in gaps of the half pole pieces, respectively, and configured to magnetically disconnect a rotor web from a q-axis flux guide.Type: GrantFiled: April 21, 2022Date of Patent: July 23, 2024Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Derek Frei Lahr, Anthony Michael Coppola, Alireza Fatemi
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Patent number: 12040665Abstract: Provided is a rotor of a rotating electric machine, including: a rotor core; an end plate provided at an end portion of the rotor core in an axial direction of the rotor core; and a shaft passing through the rotor core and the end plate along the axial direction. The end plate includes: a flat plate portion that has an annular shape and is held in contact with the rotor core; and a warp portion that is formed more on an inner peripheral side of the end plate than the flat plate portion and is held in contact with the shaft. In a radial cross section of the end plate, the warp portion is warped so as to be apart from the rotor core as extending away from the flat plate portion.Type: GrantFiled: July 11, 2019Date of Patent: July 16, 2024Assignee: Mitsubishi Electric CorporationInventors: Masafumi Okazaki, Satoru Akutsu
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Patent number: 12033792Abstract: [Problem to be Solved] An adhesive agent is accurately applied on an adhesive agent applying surface. [Solution] Provided are guiding members (100) that guide the conveyance of a sheet steel strip (F) along an intermittent conveyance direction of the sheet steel strip (F) and limit the upward movement of the sheet steel strip (F), and an adhesive agent applying apparatus (50) that applies an adhesive agent to an adhesive agent applying surface at a section corresponding to an iron core lamina (A, W).Type: GrantFiled: February 11, 2022Date of Patent: July 9, 2024Assignee: Kuroda Precision Industries Ltd.Inventors: Hironobu Okudaira, Hideo Horii, Kenichi Shindo
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Patent number: 12027926Abstract: Disclosed is a method for pulling a stator winding system of an electric machine into a stator lamination stack of the electric machine and to a winding tool, with the stator lamination stack having stator grooves which run parallel to a rotation axis of the electric machine and are distributed in a circle around the rotation axis and open thereto and which have on an end facing the rotation axis a gap region which is narrowed relative to the rest of the stator groove. Windings are arranged in the stator grooves, and winding overhangs, as seen in the direction of the rotation axis, protrude from the stator lamination stack at the two axial ends thereof, with the windings formed in the stator grooves as laid windings. The stator lamination stack has no guide structures on the two axial ends for guiding the individual turns of the windings.Type: GrantFiled: September 11, 2019Date of Patent: July 2, 2024Assignee: Innomotics GmbHInventors: Klaus BĂĽttner, Tobias Katzenberger, Klaus Kirchner, Bastian Plochmann, Matthias Warmuth
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Patent number: 12027918Abstract: A rotor core of a rotor includes a salient pole portion; air gap portions that extend from the permanent magnet to an outer peripheral surface of the rotor core; notch grooves formed such that the outer peripheral surface of the rotor core is notched; and a bridge portion that is formed between the outer peripheral surface and the air gap portions. The notch grooves are disposed such that the bridge portion is sandwiched between the notch grooves and the air gap portion, and, a notch minimum outside diameter portion in which a distance from the rotation center of the rotor core is the minimum is formed on a plane perpendicular to a rotation axis. The notch minimum outside diameter portion is located at a position closer to a center side of the salient pole portion than the air gap portions in the circumferential direction of the rotor.Type: GrantFiled: June 10, 2020Date of Patent: July 2, 2024Assignee: FUJITSU GENERAL LIMITEDInventor: Hiroaki Tanaka
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Patent number: 12027927Abstract: There are provided core part manufacturing method and apparatus for manufacturing a core part of a rotary electric machine. The core part manufacturing method includes: injecting a molten resin from a side on one end surface of an iron core body into a plurality of space portions provided in the iron core body in a state where the iron core body is sandwiched and pressed. In injecting of the resin, a contact surface on an opposite side to a side where the resin is injected includes: a relief portion that is recessed without contacting to the one end surface; and a remaining portion that is adjacent to a non-contact region. The remaining portion is disposed in the contact surface on an outer peripheral side from the non-contact region, and the relief portion is disposed further in the contact surface on an outer peripheral side from the remaining portion.Type: GrantFiled: January 21, 2022Date of Patent: July 2, 2024Assignee: MITSUI HIGH-TEC, INC.Inventors: Shohei Yoshisako, Kohei Yoshida, Hibiki Mino, Masayuki Ono
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Patent number: 12021428Abstract: A rotating electric machine to which the present invention is applied includes: a plurality of coils provided in a stator for respective phases; a plurality of bus bars having elasticity, which are provided for the respective phases and connected to the plurality of coils; and a holder including a plurality of insertion portions each having a groove shape formed to deform each of the plurality of bus bars.Type: GrantFiled: July 25, 2018Date of Patent: June 25, 2024Assignee: Mitsubishi Electric CorporationInventors: Yutaka Ikura, Fumitaka Totsuka, Shoichiro Nishitani, Akifumi Miyake, Kohei Kawata
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Patent number: 12021426Abstract: The stator is provided with a first joint part provided so as to extend in a radial direction as viewed in a rotation axis line direction; and a second joint part provided at a location corresponding to a fastening member and provided so as to extend in the rotation axis line direction so as not to overlap the fastening member.Type: GrantFiled: December 6, 2019Date of Patent: June 25, 2024Assignees: AISIN CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tetsuya Funayama, Junichi Yokota, Yasunori Suzuki
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Patent number: 12015331Abstract: A rotor for an electric machine includes a heat pipe cooling system. A rotor core has a number of cavities internal to the rotor core. The cavities are surrounded by a wall defined by the rotor core. A magnetic element disposed in the at least one cavity leaving a void in the at least one cavity between the magnetic element and the wall. A heat pipe evaporator is disposed in the void and conforms to the available space, contacting the magnetic element and the wall to remove heat from the rotor core.Type: GrantFiled: January 5, 2022Date of Patent: June 18, 2024Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Alireza Fatemi, Chih-hung Yen, SeungHwan Keum, Farzad Samie, Thomas W Nehl, Taeyoung Han, Ronald O Grover, Jr.
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Patent number: 11996738Abstract: A rotor includes a rotor core, including a magnet accommodation cavity, and a permanent magnet, embedded in the magnet accommodation cavity of the rotor core and including a bent portion located toward a radially inner side of the rotor core. The permanent magnet has a thickness to satisfy an expression of 0.0006D+0.1626?0.5/(D/2)?Wm/(D/2)??0.0006D+0.1626+0.5/(D/2).Type: GrantFiled: October 19, 2020Date of Patent: May 28, 2024Assignee: DENSO CORPORATIONInventor: Toshihiro Uchida
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Patent number: 11979062Abstract: A rotor assembly for a turbomachine having a permanent magnet electric motor that defines an axis of rotation includes a jacket member. The rotor assembly also includes a magnet member that is received within the jacket member. The magnet member has a first longitudinal end and a second longitudinal end that are separated along the axis of rotation. The rotor assembly also includes a first shaft structure that is attached to the first longitudinal end and a second shaft structure that is attached to the second longitudinal end. The magnet member is solitary and unitary and has a solid core.Type: GrantFiled: December 22, 2021Date of Patent: May 7, 2024Assignee: GARRETT TRANSPORTATION I INCInventors: Maurizio Barbone, Jean Luc Perrin, Jeffrey A. Lotterman, Martin TĂłth, Patrick Beresewicz
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Patent number: 11973386Abstract: Since the shape of the insulating paper is complicated, a forming and bending step of the insulating paper is required, and further there is a step of inserting the insulating paper in the middle of coil forming, which causes a problem of damaging the insulating paper. A fitting state of an insulating paper 201 into the inter-coil gap has an annular taper shape in which a diameter dimension D1 of an annular opening of the insulating paper 201 on a coil end tip side is long, and a diameter dimension d2 of an annular opening of the insulating paper 201 on a stator end face side on the opposite side is short. The insulating paper 201 is made to follow the tapered shape of the inter-coil gap 140 between an inner peripheral coil 120 and an outer peripheral coil 130, and the insulating paper 201 is fitted in a state inclined from the coil end tip side to the stator end face side with respect to an axial direction of the stator 20.Type: GrantFiled: March 29, 2019Date of Patent: April 30, 2024Assignee: Hitachi Astemo, Ltd.Inventors: Kenji Nakayama, Ryoji Kobayashi, Yuichiro Baba
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Patent number: 11969923Abstract: There are provided a method and a device for manufacturing an iron core product, including: holding first and second inserts by first and second holding portions provided in a holding unit; and then displacing at least one of the first holding portion and the second holding portion such that a posture of the first insert corresponds to an opening of a first receiving portion provided in a first main surface of a first receiver and a posture of the second insert corresponds to an opening of a second receiving portion provided in the first main surface; thereafter inserting the first insert from the first holding portion into the first receiving portion and inserting the second insert from the second holding portion into the second receiving portion in a state where the holding unit is arranged to face the first main surface.Type: GrantFiled: May 16, 2022Date of Patent: April 30, 2024Assignee: MITSUI HIGH-TEC, INC.Inventor: Kenyu Yoshizumi
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Patent number: 11970811Abstract: A hub for an overmolded basket base assembly of a laundry appliance is provided. The hub includes a central core defining an opening along an axis configured to receive a drive shaft. The hub further includes a disc, extending radially outwardly from the core about the axis, the disc configured to be overmolded in polymeric material that forms an overmolded plastic base, the disc including a plurality of posts arranged around the core and extending upward from a top surface of the disc to form a circumferentially-extending array to align the hub when applying torque to the hub.Type: GrantFiled: June 8, 2021Date of Patent: April 30, 2024Assignee: WHIRLPOOL CORPORATIONInventors: Jesse de Freitas Goncalves, Kenneth McConnell, Steven Fricke, Marcos H. Herrmann, Bradley D. Morrow, Eric J. Walsh, Christine L. Strain, Peter A. Wagoner
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Patent number: 11955851Abstract: An electric machine includes a stator core defining slots and a first hairpin assembly installed in the stator core. The first hairpin assembly includes first and second same hairpins, each having first and second ends and separately coated to have first and second outer coating surfaces, respectively. The hairpin assembly is in first and second ones of the slots such that the first and second outer surfaces are touching. A weld material joins the first ends and another weld material joins the second ends.Type: GrantFiled: June 25, 2021Date of Patent: April 9, 2024Assignee: Ford Global Technologies, LLCInventors: Feng Liang, Michael W. Degner
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Patent number: 11949299Abstract: A rotor manufacturing method comprises an arranging step for arranging a rotor core, which is formed by stacking electromagnetic steel plates, to direct the stacked electromagnetic steel plates toward a vertical direction, a guide inserting step for inserting a rod-like guide into a magnet insertion hole formed to extend in the stacked direction of the rotor core after the arranging step, a sheet inserting step for inserting a plurality of sheets from above the rotor core into the magnet insertion hole along different side surfaces of the guide after the guide inserting step, a guide pull-out step for pulling out the guide from the magnet insertion hole after the sheet inserting step, and a magnet inserting step for inserting a permanent magnet between the plurality of sheets within the magnet insertion hole after the guide pull-out step.Type: GrantFiled: April 26, 2023Date of Patent: April 2, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Masayuki Akaishi
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Patent number: 11936271Abstract: Replaceable windings (101) for an electromagnetic machine (100) are provided. A replaceable winding (101) comprises a body (107) having a longitudinal axis (105), the body (107) comprising opposing surfaces along the longitudinal axis (105). The replaceable winding (101) further comprises an aperture (119) through the body (107), between the opposing surfaces, the aperture (119) having generally parallel internal sides about perpendicular to the opposing surfaces of the body (107), the aperture (119) configured to removably received a pole portion (109) of the electromagnetic machine (100). The replaceable winding (101) further comprises electrical conductors wound about the aperture (119) in the body (107). The replaceable winding (101) further comprises electrical connectors (123) at one or more external sides of the body (107), the electrical connectors (123) connected to the electrical conductors.Type: GrantFiled: November 5, 2020Date of Patent: March 19, 2024Assignee: HYPERLOOP TECHNOLOGIES, INC.Inventors: Rachel Ozer, Noel Godinez, George Tirone, Tim Lambert, Irfan-ur-rab Usman, Yingjie Li
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Patent number: 11916441Abstract: A rotor includes a shaft having an outer surface including a first diameter and a flange extending from the outer surface. A first plurality of laminations is arranged about the shaft. The first plurality of laminations includes an outer annular surface and an inner surface defining an opening including a second diameter that is substantially equal to the first diameter. A second plurality of laminations is arranged about the shaft and coupled to the first plurality of laminations. The second plurality of laminations include an outer annular surface portion and an inner surface portion defining a third diameter that is greater than the first diameter.Type: GrantFiled: January 28, 2021Date of Patent: February 27, 2024Assignee: BORGWARNER INC.Inventors: Joshua B. Lahrman, David A. Fulton
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Patent number: 11916443Abstract: A rotor for an electric machine, comprising a rotor shaft and a laminated core arranged on it, comprising multiple metal plates arranged in axial succession and lying against each other, as well as at least one coolant duct running through the laminated core, wherein the laminated core is axially clamped by at least one clamping means, wherein the clamping means shoved onto the rotor shaft comprises at least one axially braced spring element and at least one tolerance compensation disk.Type: GrantFiled: May 4, 2021Date of Patent: February 27, 2024Assignee: AUDI AGInventors: Moritz Lux, Peter Suess, Lars Wetterau
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Patent number: 11916437Abstract: In an IPM rotor, a first core sheet has a first sheet hole forming a part of an accommodation hole. The first sheet hole has an edge portion having a flat spring portion which is bent by a magnet through insertion of the magnet into the accommodation hole. A pair of recesses forming a clearance with respect to the magnet are formed at both side portions of the flat spring portion of the edge portion of the first sheet hole. A size of the clearance is set based on a relationship between a magnitude of a pressing force of the flat spring portion on the magnet and variation in pressing force.Type: GrantFiled: November 1, 2018Date of Patent: February 27, 2024Assignee: Mitsubishi Electric CorporationInventors: Masafumi Okazaki, Natsumi Sugi, Yu Hirotani, Akihiko Mori, Satoru Akutsu
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Patent number: 11901792Abstract: A bus bar assembly includes a bus bar holder and bus bars each including a main line portion extending in a plane perpendicular or substantially perpendicular to a center axis in a posture in which a plate surface is oriented in an axial direction, and a connection terminal portion connected to an end portion of the main line portion. When viewed in the axial direction as a symmetry axis, the main line portion of the first U-phase bus bar and the main line portion of the second U-phase bus bar, the main line portion of the first V-phase bus bar and the main line portion of the second V-phase bus bar, and the main line portion of the first W-phase bus bar and the main line portion of the second W-phase bus bar, each have a shape line-symmetric to each other.Type: GrantFiled: February 4, 2022Date of Patent: February 13, 2024Assignee: NIDEC CORPORATIONInventor: Ryo Kamizato
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Patent number: 11888362Abstract: A method for manufacturing an electric machine having a stack of magnetic laminations including a stack of green blanks. A first green blank of the stack is printed. A separating layer is applied to the first green blank. At least a second green blank of a magnetic lamination is printed onto the first green blank with the separating layer. The green blanks are jointly sintered.Type: GrantFiled: August 30, 2021Date of Patent: January 30, 2024Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Thomas Soller, Rolf Vollmer, Carsten Schuh
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Patent number: 11876404Abstract: The electric machine includes a rotor and an internal stator operatively coupled to the rotor. The internal stator further includes a back iron having a bearing and a plurality of teeth, a plurality of ring coils wound around the back iron, a central hub, and a plurality of connectors that connects the central hub to the back iron. The back iron is made of a first material and at least one connector is made of a second material that is different from the first material.Type: GrantFiled: October 16, 2019Date of Patent: January 16, 2024Assignee: CUMMINS INC.Inventors: Bradford Palmer, Codrin Cantemir
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Patent number: 11870301Abstract: A radial flux electrical machine is disclosed. The machine comprises a body of the stator having a body that defines a longitudinal axis a substantially cylindrical inner surface and an inner volume, and having a plurality of electromagnetic elements, each of which includes a stator core of ferromagnetic material and a winding of electrically conductive material located around at least part of the stator core of the electromagnetic element, the electromagnetic elements being arranged around the inner surface of the stator, and operable to induce a magnetic flux field in a radial direction in the inner volume of the stator, and a rotor located within the inner volume of the stator, and rotatable with respect to the stator.Type: GrantFiled: June 11, 2021Date of Patent: January 9, 2024Assignee: DANA TM4 UK LTDInventor: Lloyd Ash
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Patent number: 11870316Abstract: A motor is provided including a motor housing having an open end; a stator disposed within the motor housing and including a stator core, stator windings, and an end insulator that electrically insulate the stator core from the stator windings and includes an annular body; a rotor rotatably received within the stator and including a rotor shaft extending along a longitudinal axis and permanent magnets; and a bearing bridge including a center pocket arranged to support a bearing of the rotor shaft. The bearing bridge is received at least partially within the end insulator. The annular body of the end insulator includes at least one peripheral opening located within the motor housing, and the bearing bridge is radially piloted relative to the motor housing via a retaining member received through the at least one peripheral opening.Type: GrantFiled: February 1, 2022Date of Patent: January 9, 2024Assignee: BLACK & DECKER, INC.Inventors: Dustin Jefferies, David J. Smith, Marcus E. E. Rydin, Justin H. Ayers, Sumiteru Mori, Kristopher Cochran
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Patent number: 11863047Abstract: An electric work machine, such as a lawn mower includes a motor case (22) fixed inside a main-body housing (10). A brushless motor (21) is housed inside the motor case (22) and includes a stator (23) having a stator core (40), coils (45), and upper and lower insulators (42, 43), and a rotor (24) disposed inward of the stator (23) and having a rotary shaft (25). A spindle (17) is driven by the rotary shaft (25). The motor case (22) holds the stator (23) and axially supports the rotary shaft (25) via bearings (68, 76). One or more insulating members, such as an insulating cap (67) and/or a resin layer (78), provide electrical insulation between the stator core (40) and the rotary shaft (25).Type: GrantFiled: March 28, 2023Date of Patent: January 2, 2024Assignee: MAKITA CORPORATIONInventors: Kei Kouda, Hideki Abe
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Patent number: 11837935Abstract: A motor is provided including a motor housing having a substantially cylindrical body and at least one open end, a stator disposed within the motor housing, and a rotor rotatably received within the stator. The motor further includes a bearing bridge mounted on the open end of the motor housing and including a main body forming a center pocket arranged to support a rotor shaft, an outer ring configured to be fittingly received through the open end of the motor housing, and at least one fastening receptacle formed radially through the outer ring. The motor housing includes a side opening through which a fastener is radially fastened into the fastening receptable to secure the bearing bridge to the motor housing.Type: GrantFiled: February 1, 2022Date of Patent: December 5, 2023Assignee: BLACK & DECKER, INC.Inventors: Dustin Jefferies, David J. Smith, Marcus E. E. Rydin, Justin H. Ayers, Sumiteru Mori
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Patent number: 11837921Abstract: An electric machine comprises a rotor with a rotor body, wherein the rotor body has a plurality of poles each carrying at least one rotor winding formed from a plurality of conductor loops, wherein the poles extend in a radial direction of the rotor and the conductor loops running through grooves respectively formed between two adjacent poles, wherein a support element extending in the radial direction is respectively arranged in the grooves between the rotor windings of the adjacent poles, which support element, at a radially outer end of the groove, bears up against a thrust-bearing element arranged in a radially positionally-fixed manner between the adjacent poles, wherein the support element presses the conductor loops against the rotor body during a rotation and/or a temperature increase of the rotor.Type: GrantFiled: April 19, 2021Date of Patent: December 5, 2023Assignee: Audi AGInventors: Paul Böckenhoff, Tom Schneider, Paul Wetzel
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Patent number: 11824403Abstract: Various examples are provided related to machines utilizing heavy rare earth (HRE) free permanent magnets. In one example, a rotor assembly including a rotor core having a plurality of rotor slots and magnets positioned within the plurality of rotor slots. At least a portion of the magnets are free of heavy rare earth (HRE) elements. The magnets can include a combination HRE segments and HRE-free segments or can be free of HRE elements. The rotor assembly can be included in an electric machine such as, e.g., a permanent magnet (PM) machine.Type: GrantFiled: April 2, 2021Date of Patent: November 21, 2023Assignee: NORTH CAROLINA STATE UNIVERSITYInventors: Md. Sariful Islam, Iqbal Husain
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Patent number: 11824428Abstract: A rotating electrical machine includes a rotor and a magnet unit. The rotating electrical machine also includes a cylindrical stator and a housing. The stator is equipped with a stator winding made up of a plurality of phase windings. The stator is arranged coaxially with the rotor and faces the rotor. The housing has the rotor and the stator disposed therein. The rotor includes a cylindrical magnet retainer to which the magnet unit is secured and an intermediate portion which connects between a rotating shaft of the rotor and the magnet retainer and extends in a radial direction of the rotating shaft. A first region located radially inside an inner peripheral surface of a magnetic circuit component made up of the stator and the rotor is greater in volume than a second region between the inner peripheral surface of the magnetic circuit component and the housing in the radial direction.Type: GrantFiled: September 22, 2021Date of Patent: November 21, 2023Assignee: DENSO CORPORATIONInventors: Yuki Takahashi, Makoto Taniguchi
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Patent number: 11813831Abstract: A method of forming an electric machine lamination includes punching a sheet having a first composition to form a cavity and a compressed region at a perimeter of the cavity. The method further includes depositing, within the cavity and on the compressed region, a deposit material having a second composition different than the first composition. The method further includes scanning a beam along the deposit material to form a bound material within the cavity and on the compressed region.Type: GrantFiled: July 14, 2021Date of Patent: November 14, 2023Assignee: Ford Global Technologies, LLCInventors: Leyi Zhu, Michael W. Degner, Feng Liang
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Patent number: 11808370Abstract: A mixer for mixing a mobile phase in a sample separation device for separating a fluidic sample, wherein the mixer includes a fluid inlet for supplying the mobile phase to be mixed to a mixing volume, a movable body configured for rotating and axially moving in the mixing volume to thereby mix the mobile phase, and a fluid outlet for supplying the mixed mobile phase to a mobile phase consumer.Type: GrantFiled: July 14, 2020Date of Patent: November 7, 2023Assignee: Agilent Technologies, Inc.Inventors: Clemens Plachetka, Manfred Berndt, Konstantin Shoykhet
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Patent number: 11801648Abstract: A sheet-shaped insulating member including a thermoplastic resin fiber and an inorganic fiber is arranged on a surface of a magnet body. The insulating member is compressed while being heated to a temperature higher than or equal to a glass transition temperature of the thermoplastic resin fiber, so that the insulating member is thermocompression-bonded to the magnet body in a state in which the inorganic fiber is elastically compressed. A magnet is thus formed. With the magnet arranged in a slot of a rotor core, the magnet is heated to a temperature higher than or equal to the glass transition temperature of the thermoplastic resin fiber. This causes the inorganic fiber to restore elasticity, so that the magnet is fixed to the rotor core.Type: GrantFiled: July 21, 2021Date of Patent: October 31, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Kenta Takeshima
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Patent number: 11795917Abstract: A main rotor shaft of a wind turbine configured to reducing contact pressure at a hub joint connection includes a flanged portion and a rod portion. The flanged portion includes an outer circumferential edge, an outer radial area, and an inner radial area. The outer radial area includes holes placed around the outer radial area for attachment to a wind turbine hub. The outer circumferential edge includes a groove placed atop the outer circumferential edge. The rod portion is formed with the inner radial area and configured for connection to a gearbox of a wind turbine.Type: GrantFiled: March 23, 2022Date of Patent: October 24, 2023Assignee: General Electric Renovables Espana, S.L.Inventors: Hemant Bhimrao Pawar, Bradley Graham Moore, Vinay Bawane, Christopher Michael Bean
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Patent number: 11799367Abstract: A rotor manufacturing method is a method that allows magnetized magnets inserted in second magnet holes of a second rotor core to be inserted, while retaining magnetism, into first magnet holes of a first rotor core. This method includes a placing step of placing the second rotor core on a first end surface, in a stack thickness direction, of the first rotor core such that the second magnet holes overlap the first magnet holes, and an extruding step of extruding the magnetized magnets from the second magnet holes toward the first magnet holes using a non-magnetic jig.Type: GrantFiled: August 4, 2021Date of Patent: October 24, 2023Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinya Sano, Kensuke Komori