Patents Examined by Jose A Gonzalez Quinones
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Patent number: 11722018Abstract: An electric motor with a beveled stator and/or rotor has at least one layer of a composite material. The composite material has at least one electrical steel strip layer as carrier and at least one polymer layer. The composite material can be used for reducing acoustic emission in beveled electric motors. A method of reducing acoustic emission in these electric motors is based on the use of the composite material.Type: GrantFiled: March 14, 2019Date of Patent: August 8, 2023Assignees: thyssenKrupp Steel Europe AG, thyssenKrupp AGInventors: Stephan Drewes, Tobias Lewe, Florian Herget
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Patent number: 11722032Abstract: An electric motor assembly includes an outer housing with two sides open, an impeller provided in the outer housing, an inner housing disposed concentrically in the outer housing and spaced apart from the impeller, a stator provided in the inner housing, a rotor rotatably disposed in the stator, a first air flow path through which air flows in an axial direction between the inner housing and the outer housing based on rotation of the impeller, and a second air flow path through which air is joined with the air of the first air flow path via an inside of the inner housing and a gap between the impeller and the inner housing based on rotation of the impeller. Accordingly, cooling of the stator can be facilitated by the air flow paths.Type: GrantFiled: October 27, 2021Date of Patent: August 8, 2023Assignee: LG Electronics Inc.Inventors: Jaeho Kim, Sunghyun Kim
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Patent number: 11711006Abstract: A driving mechanism is provided, including a fixed portion, a movable portion, a driving assembly and a connecting element. The movable portion may move relative to the fixed portion and is used for holding an optical module. The driving assembly moves the movable portion relative to the fixed portion. The connecting element is movably connected to the fixed portion and the movable portion.Type: GrantFiled: June 4, 2020Date of Patent: July 25, 2023Assignee: TDK TAIWAN CORP.Inventors: Chao-Chang Hu, Chen-Hsien Fan, Yueh-Lin Lee, Yu-Chiao Lo, Chih-Wei Weng
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Patent number: 11705721Abstract: A power tool including a housing, a motor having a rotor and a stator, at least one grip sensor configured to generate a grip parameter, and a switching network electrically coupled to the brushless DC motor. An electronic processor is connected to the switching network and the at least one grip sensor and configured to implement kickback control of the power tool. The electronic processor is configured to determine a kickback threshold based on the grip parameter, control the switching network to drive the motor, receive a signal related to a power tool characteristic, determine, based on the power tool characteristic being greater than or equal to the kickback threshold, that a kickback event of the power tool is occurring, and control, in response to determining that the kickback event is occurring, the switching network to cease driving of the motor.Type: GrantFiled: March 8, 2021Date of Patent: July 18, 2023Assignee: Milwaukee Electric Tool CorporationInventors: Maxwell L. Merget, Jessie L. Bernitt
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Patent number: 11705778Abstract: A power tool is provided with a tool housing, a support plate provided within the tool housing, a rear tool cap mounted on a rear end of the tool housing, and a brushless direct-current (BLDC) motor received within the housing. The motor includes a stator assembly having a stator core and stator windings, a front motor bearing supported by the support plate, a rear motor bearing supported by the rear tool cap, and a rotor including a rotor core and a magnet ring mounted around the rotor core. The rotor core defines an annular recess within which at portion of the front bearing and a portion of the support plate are located such that the a radial plane intersects the front bearing, the magnet ring, and the stator core.Type: GrantFiled: December 16, 2020Date of Patent: July 18, 2023Assignee: Black & Decker Inc.Inventors: David J. Smith, Justin H. Ayers, Abraham Sanchez
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Patent number: 11699939Abstract: An electric machine (10) includes a housing (12), a stator (20) fixed within the housing (12), a rotor (30) with a rotor shaft (32), an air gap (24) formed between the rotor (30) and the stator (20), and a cooling device (14) configured for liquid cooling of the electric machine (10). The rotor shaft (32) defines an axial bore (36) in an axial direction, which extends at least partially into the rotor (30). The rotor (30) defines a radially extending air duct (40), which extends from an inner side (42) contacting the rotor shaft (30) to an outer side (44) facing the air gap (24). The rotor shaft (32) defines a bore (46), which is aligned with the air duct (40) such that air is flowable out of the rotor shaft (32) into the air gap (24).Type: GrantFiled: November 11, 2021Date of Patent: July 11, 2023Assignee: ZF FRIEDRICHSHAFEN AGInventor: Ulrich Kehr
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Patent number: 11695315Abstract: Magnetic transmissions and related methods are described. In one embodiment, an apparatus includes a magnetic screw comprising an elongate body, a nut selectively magnetically coupled to the magnetic screw, and a potential energy storage system and/or a resistive force component. The nut is configured to be displaced relative to the elongate body in a first direction in response to manipulation of a magnetic field between the magnetic screw and the nut when the nut is magnetically coupled to the magnetic screw. In embodiments including a potential energy storage system, the potential energy storage system may store potential energy when the nut is displaced in the first direction. In embodiments including a resistive force component, the resistive force component may resist motion of the nut in the first direction by applying a resistive force to the nut at least partially in an opposing second direction.Type: GrantFiled: November 30, 2020Date of Patent: July 4, 2023Assignee: Massachusetts Institute of TechnologyInventors: Martin Culpepper, Marcel Thomas
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Patent number: 11689083Abstract: Cable-actuated position sensors are described that employ multiple block and tackle arrangements to measure displacement of a draw wire or flexible cable. The disclosed sensors are relatively small and inexpensive. The disclosed sensors may also be used as part of a servo motor, or in conjunction with gear motors to provide positional information for operation of the gear motor.Type: GrantFiled: August 30, 2022Date of Patent: June 27, 2023Inventor: Shaun William Fetherston
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Patent number: 11682932Abstract: An electric machine stator includes a soft magnetic yoke having a cylindrical yoke body extending along a central axis, with an outer surface and an inner periphery defining a central opening about the central axis, and a plurality of soft magnetic stator teeth. Each stator tooth defines a first set of air pockets, and a second set of air pockets. An electric machine rotor and permanent magnet material with air pockets are also provided.Type: GrantFiled: December 17, 2020Date of Patent: June 20, 2023Assignee: Ford Global Technologies, LLCInventors: Leyi Zhu, Chun Tang, Franco Leonardi, Michael W. Degner
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Patent number: 11670992Abstract: An electric machine for a drive of a motor vehicle, having a stator, a rotor which can be rotated relative to the stator, a temperature sensor arranged and designed to capture a temperature of the stator and a rotor condition capture sensor which is arranged and designed to capture a rotational speed and/or rotational position of the rotor accommodated in a stator-fixed manner. The temperature sensor and the rotor condition capture sensor are implemented as subsystems of a common sensor system, wherein a first subsystem having the temperature sensor has an elastic thermally conductive contact element connected to the temperature sensor, which contact element is permanently fitted to a contact region of the stator. A hybrid module having this electric machine is also provided.Type: GrantFiled: November 4, 2019Date of Patent: June 6, 2023Assignee: Schaeffler Technologies AG & Co. KGInventors: Andreas Ruppert, Michael Marsetz, Thomas Fritz
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Patent number: 11670977Abstract: A brushless direct-current motor is provided includes an inner stator and an outer rotor. A rotor shaft extends through a stator core of the inner stator. A first end cap includes a radial back plate disposed on a first side of the stator and a front center opening through which the rotor shaft is supported via a front bearing. A second end cap includes an inner annular body extending axially inwardly and forming a rear center opening, an outer annular body, and a main body extending on a second side of the stator. The inner annular body includes a first portion that extends at least partially into an opening of the stator core and supports the rotor shaft via a rear bearing, and a second portion rearward of the first portion that received a rear end of the rotor shaft therein and houses a sensor board therein.Type: GrantFiled: April 23, 2020Date of Patent: June 6, 2023Assignee: Black & Decker Inc.Inventors: John B. Fogle, Dustin Jeffries, Michael R. Marjomaa, Kevin L. Pulley, Vincent W. Zou, Jarrett A. Dunston, David J. Smith, Rene Thieme, Tim Heimrich, Tobias Heep, Daniel Bernhart, Dieter Schmidtfrerick
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Patent number: 11660638Abstract: Circular force generator devices (100), systems, and methods for damping vibrations which include two complementary rotor assemblies (110, 120) that are rotatable together about a common shaft (102) but that have an adjustable rotational position (P1, P2) with respect to one another such that a significant reduction in rotor inertia and bearing drag relative to conventional CFG configurations is provided. The present architecture creates virtually zero rotating moment.Type: GrantFiled: March 20, 2019Date of Patent: May 30, 2023Assignee: LORD CorporationInventor: Martin Bieber
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Patent number: 11649059Abstract: An integrated multimode thermal energy transfer system, method and apparatus for full-scale clean fuel electric-powered multirotor aircraft with automatic on-board-capability to provide sensor-based temperature awareness and adjustment to critical components and zones of the aircraft. Automatic computer monitoring, including by a programmed triple-redundant digital autopilot computer, controls each motor-controller and motor to produce pitch, bank, yaw and elevation, while simultaneously measuring, calculating, and adjusting temperature and heat transfer of aircraft components and zones, to protect critical components from exceeding operating parameters and to provide a safe, comfortable environment for occupants during flight.Type: GrantFiled: May 21, 2020Date of Patent: May 16, 2023Assignee: Alakai Technologies CorporationInventor: Brian D. Morrison
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Patent number: 11652393Abstract: A rotor assembly for an electric motor for a turbomachine defines an axis of rotation. The rotor assembly includes a jacket member that is hollow and that defines an inner radial surface facing inwardly toward the axis of rotation. Furthermore, the rotor assembly includes a magnet member that is received within the jacket member. The magnet member includes an outer radial surface facing outwardly from the axis of rotation. The jacket member is made of a sintered composite material having carbon filament and a sintered matrix. Additionally, the inner radial surface of the jacket member abuts against the outer radial surface of the magnet member to retain the magnet member in a radial position relative to the axis.Type: GrantFiled: July 1, 2020Date of Patent: May 16, 2023Assignee: GARRETT TRANSPORTATION I INCInventors: Jeffrey Lotterman, Todd Ratke, Sushank Singampalli, Antoine Costeux, Carlos Chavez Castellanos
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Patent number: 11646616Abstract: A rotor assembly for an electric motor includes a rotor core that is fabricated from a plurality of stacked laminations. The rotor core has a plurality of arcuately arranged, axially extending magnet receiving slots. The rotor core includes a plurality of magnets received in respective ones of the magnet receiving slots. The laminations include radially extending deflectable magnet retaining tabs that extend into the magnet receiving slots. The magnet retaining tabs engage and are deflected by a corresponding one of the magnets to exert a reactive force against the magnets.Type: GrantFiled: February 4, 2021Date of Patent: May 9, 2023Assignee: Nidec Motor CorporationInventors: Jeffrey Scott Sherman, Chetan O. Modi, Steven R. Palmer, Ryan M. Bastien, Joey Mitchell Bomar, Paul G. Michaels, Daniel E. Bailey
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Patent number: 11646633Abstract: Aircraft electric motors are described. The electric motors include a substantially annular shaped motor housing having an outer wall and an inner wall, wherein a rotor-stator cavity is defined between the outer wall and the inner wall and a gear assembly cavity is defined radially inward from the inner wall and a gear assembly arranged within the gear assembly cavity. The gear assembly includes a sun gear operably connected to a first shaft, at least one planetary gear arranged radially outward from the sun gear and rotationally engaged with the sun gear, and a ring gear arranged radially outward from the at least one planetary gear and rotationally engaged with the at least one planetary gear, wherein the ring gear is operably connected to a second shaft.Type: GrantFiled: April 6, 2021Date of Patent: May 9, 2023Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: Jagadeesh Kumar Tangudu, Huan Zhang, Zaffir A. Chaudhry, Andrzej Ernest Kuczek
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Patent number: 11646619Abstract: An electronically commutated machine, in particular an electronically commutated electric motor is disclosed. To detect an angle of rotation completed by a rotor shaft of the machine or a rotational speed, this rotor shaft is equipped with a signal generator of a sensor device. This latter component has a magnet element, which is fastened on the rotor shaft by way of a holding element. A clamping body is included, which is arranged on the rotor shaft with force fit and onto which the holding element is pressed.Type: GrantFiled: April 6, 2021Date of Patent: May 9, 2023Assignee: Robert Bosch GmbHInventors: Michael Loeffler, Michael Schlitzkus, Thomas Zander
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Patent number: 11646641Abstract: A stator of an external rotor motor supports a plurality of excitation windings. At least one heat dissipation means is provided, for discharging heat in an axial direction. The heat dissipation means contacts the end face of at least one excitation winding or a potting compound or insulation enclosing the excitation winding and is also connected to a heat sink, in the form of the stator carrier, a cooling element and/or a housing, for removing the heat.Type: GrantFiled: February 1, 2019Date of Patent: May 9, 2023Assignee: IPGATE CAPITAL HOLDING AGInventor: Thomas Leiber
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Patent number: 11646639Abstract: A vibration driver drill as an electric power tool includes a brushless motor that includes a rotor and a sensor circuit board that detects a rotation of the rotor. The rotor includes a tubular rotor core and four permanent magnets held in the rotor core so as to extend in an axial direction of the rotor core. The sensor circuit board is adjacent to a front-end part (first end portion) of the rotor core. The rotor core is provided with a recessed groove on a side surface outward between the mutually adjacent permanent magnets. The recessed groove extends from the front-end part in the axial direction of the rotor core without reaching a rear-end part (second end portion) facing the front-end part.Type: GrantFiled: March 1, 2019Date of Patent: May 9, 2023Assignee: MAKITA CORPORATIONInventor: Kiyoshi Aoyama
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Patent number: 11643159Abstract: An electric power generator is provided for a human-powered vehicle. The electric power generator includes an axle, a stator, a rotor and a first electrical cable. The axle has a first axial end, and a second axial end. The stator has a first axial stator-end that faces the first axial end of the axle with respect to the rotational center axis and a second axial stator-end that faces the second axial end of the axle with respect to the rotational center axis. The rotor is rotatably mounted on the axle to rotate around a rotational center axis of the electric power generator. The first electrical cable is electrically connected to the stator on the first axial stator-end of the stator. The first electrical cable extends axially through the stator toward the second axial stator-end of the stator with respect to the rotational center axis.Type: GrantFiled: June 28, 2021Date of Patent: May 9, 2023Assignee: Shimano Inc.Inventors: Azusa Yamazaki, Kenkichi Inoue, Yuuya Yoneda