Patents Examined by Naishadh N Desai
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Patent number: 11289976Abstract: In a first aspect, a stator structure for an electrical machine is provided. The stator structure comprises a circumferential support having an external rim to support a plurality of electrical windings. The circumferential support comprises an air entrance, an air distribution channel and a plurality of axial air openings. The air entrance provides a passage between the air distribution channel and an outside of the stator structure. The air distribution channel extends through a portion of the circumferential support to circumferentially distribute an air flow from the air entrance. The plurality of axial air openings provides a passage between the air distribution channel and an outer side of the external rim to guide an air flow from the air distribution channel to the outer side of the external side.Type: GrantFiled: July 30, 2020Date of Patent: March 29, 2022Assignee: GENERAL ELECTRIC RENOVABLES ESPAÑA, S.L.Inventors: Sadeo Ramtahal, Julio César Urresty, Szymon Stanislaw Bankowski, Thomas Drots, Pawel Siwak, Grzegorz Pacocha
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Patent number: 11289955Abstract: A claw pole stator for a transversal flux motor includes a multiplicity of segments positioned next to one another along a circumferential direction for the annular claw pole stator. Each segment extends from an inner circumferential surface along a radial direction to an outer circumferential surface and is delimited in the circumferential direction by a first side surface and a second side surface and in an axial direction by a first end surface and a second end surface. Each segment is connected by the side surfaces to at least one other segment to form the annular claw pole stator. Segments positioned adjacent each other contact each other by a first contact surface on the first side surface or by a second contact surface on the second side surface and due to the contact surfaces form a form-locking connection in the circumferential direction.Type: GrantFiled: March 7, 2018Date of Patent: March 29, 2022Assignee: GKN Sinter Metals Engineering GmbHInventors: Nils Bornemann, Stefan Tiller, Rainer Schmitt, Hong Giang To
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Patent number: 11283322Abstract: A cage for a wound rotor includes a first portion and a second portion to be rigidly connected to one another. Each portion includes an end ring and a circumferential plurality of rods extending away from the end ring parallel to the axis of revolution of the end ring. Each rod has a main portion and an end portion. For each rod of the first portion, the end portion of the rod is shaped to be rigidly connected to the end portion of at least one complementary rod of the second portion when the two portions are each installed at a longitudinal end of the body of the rotor so that the two complementary rods rigidly connected form a slot wedge extending between the two end rings of the two portions of the cage.Type: GrantFiled: May 13, 2019Date of Patent: March 22, 2022Assignees: Renault s.a.s., NISSAN MOTOR CO., LTD.Inventors: Shahab Tavakoli, Anthony Dell Agnese, Ferdinand Frabolot
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Patent number: 11277042Abstract: A rotor for a machine has a plurality of rotor segments, each rotor segment forming at least one rotor pole and having a plurality of permanent magnets interior to the rotor and at least one saturatable bridge section for each permanent magnet in the rotor segment, each saturatable bridge section comprising a protrusion between air regions separating a north pole and a south pole of the permanent magnet to cause a portion of magnetic flux from the permanent magnet to traverse the saturatable bridge and cause a majority of the permanent magnet flux through an air gap of a rotor-stator interface between the rotor and a stator of the machine and through a stator pole.Type: GrantFiled: May 18, 2020Date of Patent: March 15, 2022Assignee: QM Power, Inc.Inventor: Charles J Flynn
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Patent number: 11277045Abstract: In one embodiment, a permanent magnet rotor is provided. The permanent magnet rotor includes at least one permanent magnet and a substantially cylindrical rotor core including an outer edge and an inner edge defining a central opening. The rotor core includes a radius R, at least one pole, and at least one radial aperture extending radially though the rotor core from the outer edge to a predetermined depth less than the radius. The at least one radial aperture is configured to receive the at least one permanent magnet. The rotor further includes at least one protrusion extending into the at least one radial aperture, the at least one protrusion positioned substantially along a bottom of the at least one radial aperture and configured to facilitate retention of the at least one permanent magnet within the at least one radial aperture.Type: GrantFiled: March 30, 2020Date of Patent: March 15, 2022Assignee: Regal Beloit America, Inc.Inventors: Subhash Marutirao Brahmavar, Lester Benjamin Manz, Ludovic Andre Chretien, Changiz Rashidzadeh, Dan Mircea Ionel
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Patent number: 11271463Abstract: A motor comprising: (a) a stator having a plurality of ferrous cores surrounded by a plurality of windings; (b) a pair of rotors positioned on opposing sides of the stator, each rotor including a ring gear; and (c) a drive shaft extending through a cutout of the stator, the drive shaft having a pinion gear positioned near an end of the drive shaft in communication with the ring gears of the rotors; wherein the rotors rotate in opposing directions so that the ring gears translate a movement of the rotors to the drive shaft through the pinion gear to rotate the drive shaft in a direction substantially orthogonal to a direction of rotation of the rotors.Type: GrantFiled: October 16, 2020Date of Patent: March 8, 2022Assignee: CSAW STUDIOS L.L.C.Inventor: Seanan R. Holland
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Patent number: 11271446Abstract: One or a plurality of embodiments of the present application provide a winding method for a stator winding.Type: GrantFiled: July 29, 2019Date of Patent: March 8, 2022Assignee: Ford Global Technologies, LLCInventors: Chuan Deng, Yigang Yuan, Guohua Du, Xusheng Zhang
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Patent number: 11264868Abstract: An electric motor assembly includes a stator, rotor, housing, rotatable shaft, and cooling fan. The stator and rotor are at least partly housed in the housing. The shaft is associated with the rotor to rotate about an axis. The cooling fan is fixed to and thereby rotates with the shaft to induce airflow within the housing. The cooling fan includes a wheel plate projecting radially relative to the shaft. The cooling fan further includes a plurality of radial blades that project axially from the wheel plate. The blades define a series of radial channels. The wheel plate defines an axial plate opening therethrough in alignment with a respective one of the channels.Type: GrantFiled: May 1, 2020Date of Patent: March 1, 2022Assignee: Nidec Motor CorporationInventors: Richard L. Eason, Chetan O. Modi, Kevin L. West
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Patent number: 11264879Abstract: An in-wheel motor, comprising: a rotor (14) of a surface permanent magnet type, wherein a plurality of permanent magnets (15) are fixed along an inner circumferential surface of the rotor; wedge-shaped protrusions (42) for fixing the permanent magnets (15) on the rotor (14); and a stator (30) disposed inside the rotor (14), wherein teeth (35) and slots (36) are alternately formed on an outer circumferential portion of the stator; wherein the number of the permanent magnets (15) is 32, and the number of the slots 36 is 24; wherein each of the permanent magnets (15) has chamfers (43) on each of the ends so that a magnetic flux cannot concentrate, and is convex toward the stator (30), in a cross-section perpendicular to a rotary axis of the rotor (14).Type: GrantFiled: March 9, 2018Date of Patent: March 1, 2022Assignee: TODA RACING CO., LTD.Inventor: Tomonori Katsuta
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Patent number: 11264885Abstract: Various embodiments include a rotor for an electric machine comprising: an electric coil arrangement; and a winding carrier mechanically carrying the coil arrangement and at least partially enclosing the coil arrangement on a radially outer side of the coil arrangement. The rotor includes an inner cavity for circulating a fluid coolant such that the coil arrangement comes into contact with the liquid coolant on its radially inner side as the rotor rotates.Type: GrantFiled: July 20, 2017Date of Patent: March 1, 2022Assignee: ROLLS-ROYCE DEUTSCHLAND LTD & CO KGInventors: Michael Frank, Peter van Haßelt, Johannes Richter, Christian Weidermann
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Patent number: 11264876Abstract: A flywheel system includes a rotor configured to rotate about a rotation axis. The flywheel system further includes a fixture and an active magnetic bearing module for actively stabilizing the rotor relative to the fixture. The active magnetic bearing module includes a plurality of first magnetizable elements mechanically coupled to or integrated in the rotor, and a plurality of electromagnets mechanically coupled to the fixture and configured to magnetically couple with the plurality of first magnetizable elements to actively stabilize the rotor relative to the fixture. Each of the first magnetizable elements is farther than each of the electromagnets from the rotation axis.Type: GrantFiled: October 22, 2018Date of Patent: March 1, 2022Assignee: MAERSK DRILLING A/SInventors: John Røn Pedersen, Martin Speiermann, Jamshid Zamany
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Patent number: 11264923Abstract: Various implementations of the invention correspond to an improved vortex flux generator.Type: GrantFiled: October 4, 2020Date of Patent: March 1, 2022Assignee: Silicon Turbine Systems, Inc.Inventor: Richard Adams
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Patent number: 11264846Abstract: A stator for an electric machine having a plurality of radially extending teeth, supported by an outer annular yoke radial to the teeth, at least part of the teeth supporting a coil and the outer annular yoke having flutes of partially cylindrical shape opening towards the teeth, at least part of the teeth each having, at their end, on the side of the outer annular yoke, a protuberance of partially cylindrical shape, the protuberance being held in the flute by contact points so that at least one part of the teeth performs a relative movement having a degree of rotational and/or translational freedom relative to the annular yoke.Type: GrantFiled: March 29, 2018Date of Patent: March 1, 2022Assignee: Moving Magnet TechnologiesInventors: Gael Andrieux, Gilles Tonnelier, Pierre Marchal
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Patent number: 11264857Abstract: A stator for an electric motor, including a stator ring with slots arranged on the inner or the outer circumference, wherein each slot accommodates a plurality of conductors extending along the slot and having a rectangular cross-section, each of which is covered by an insulation layer, wherein to form a channel through which a coolant can flow, the insulation layer of at least one of the conductors has at least one recess extending along the conductor.Type: GrantFiled: September 26, 2019Date of Patent: March 1, 2022Assignee: AUDI AGInventor: Philipp Uhlmann
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Patent number: 11264869Abstract: A motor includes a shaft presenting a shaft lead end, a switch assembly including a switch arm shiftable between a first position and a second position, and shield structure. The shaft lead end and the switch assembly are disposed axially outward of an endhsield. The shield structure is disposed axially outward of the switch arm to at least substantially restrict direct tool access to the switch arm from an axially outward position relative to the switch arm. The shield structure at least in part defines first and second tool access channels each extending radially inwardly to the shaft lead end, such that the shield structure enables direct tool access to the shaft lead end via the tool access channels but prevents or at least substantially restricts direct tool access to the switch arm via the tool access channels.Type: GrantFiled: January 20, 2020Date of Patent: March 1, 2022Assignee: Nidec Motor CorporationInventors: John G. Schrader, Steven R. Palmer, Jeffrey Scott Sherman
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Patent number: 11264864Abstract: An electronic device includes a signal trigger circuit, a flat-motor drive circuit, and a flat motor. The signal trigger circuit sends a starting instruction to the flat-motor drive circuit for instructing to start the flat motor. A processor of the flat-motor drive circuit sends a first triggering instruction to a voltage processing circuit of the flat-motor drive circuit after receiving the starting instruction. The voltage processing circuit provides a first working voltage V1 to the flat motor after receiving the first triggering instruction, and provides a second working voltage V0 to the flat motor after a first time period. V0<V1?V2, V0 is a rated voltage value of the flat motor, and V2 is a maximum forward voltage value that the flat motor can bear when the flat motor is started.Type: GrantFiled: September 30, 2017Date of Patent: March 1, 2022Assignee: HONOR DEVICE CO., LTD.Inventors: Ting Huang, Tieli Zhang, Zhi Chang, Xuan Li, Jianli Chen
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Patent number: 11258333Abstract: Propulsors (e.g., an electric motor mechanically coupled to a rotor) are described that passively cool the electric motors via an airflow path through the electric motor and out of the rotors. One embodiment comprises a method of cooling an electric motor. The method comprises operating the electric motor of a propulsor for an aircraft to rotate a rotor of the propulsor, where the rotor has one or more air outlets, and where the electric motor has a housing that includes one or more air inlets in fluid communication with the one or more air inlets. The method further comprises generating, by rotating the rotor using the electric motor, an airflow through the electric motor from the one or more air inlets to the one or more air outlets to cool the electric motor.Type: GrantFiled: July 29, 2019Date of Patent: February 22, 2022Assignee: Aurora Flight Sciences CorporationInventor: Daniel B. Cottrell
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Patent number: 11245315Abstract: A method of manufacturing a stacked stator core comprises forming a stack that comprises an annular yoke portion, a plurality of tooth portions, and a plurality of slots. The method further comprises inserting a mold core member of the plurality of mold core members into a slot of the plurality of slots, the mold core member comprising a body portion and a closing portion connected to the body portion, the body portion extending along a longitudinal direction of the slot and spaced apart from an inner wall surface of the slot, the closing portion being positioned on a slot opening side of the slot and closing an open end portion of the slot on the slot opening side. Additionally, the method comprises forming a resin portion by charging a melted resin into a filling space between the slot and the mold core member.Type: GrantFiled: August 8, 2019Date of Patent: February 8, 2022Inventors: Iwao Myojin, Yusuke Hasuo, Yusuke Eto, Hayato Nakayama
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Patent number: 11245311Abstract: A power supply system installed on a rotating object includes: a power generation device, and a power management device for converting the electric power output by the power generation device to adapt to load requirements, in which the power generation device includes a rotor installed on and fixed to the rotating object, the rotor including at least one induction coil, and a stator which is rotatable relative to the rotor, the stator including at least two magnetic poles; the stator includes a stator case and a counterweight block, and the stator case surrounds the rotor from the circumferential direction of the rotor, and is closed in the circumferential direction; and the counterweight block is fixedly arranged at one side of the stator case, and the angle of the counterweight block in the circumferential direction is in the range of less than or equal to 180 degrees.Type: GrantFiled: February 28, 2020Date of Patent: February 8, 2022Assignee: CITIC DICASTAL CO., LTD.Inventors: Zuo Xu, Minglei Li, Shiwen Xu, Yao Dai, Shaoqian Wang, Weidong Liu, Xi Li
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Patent number: 11239730Abstract: A rotating device according to the present invention includes a motor including an outer shell, a rotating shaft protruding from the outer shell, a first inner bearing supporting the rotating shaft, and a second inner bearing supporting the rotating shaft, a plurality of gears configured to transmit rotation of the motor to an external device, and a casing. A first outer bearing and a second outer bearing are arranged at the casing, and the first outer bearing and the second outer bearing rotatably support portions of the rotating shaft protruding from end surfaces at both sides of the outer shell in a longitudinal direction of the rotating shaft.Type: GrantFiled: August 23, 2018Date of Patent: February 1, 2022Assignee: MINEBEA MITSUMI INC.Inventors: Koichiro Hirabayashi, Yukimasa Matsumura
