Vibration Or Noise Suppression Patents (Class 310/51)
  • Patent number: 11031832
    Abstract: According to one embodiment, a stator includes spacing strips disposed to be interposed in the electromagnetic steel plates for each predetermined set of plates of the electromagnetic steel plates, each of the spacing strips extending in a radial direction of the stator iron core to form ventilation ducts, a spacing strip attachment plate which is disposed between the spacing strips and the set of plates of the electromagnetic steel plates to fix the spacing strips, and an insulating layer which covers the entirety of the spacing strip attachment plate and the spacing strips fixed to the spacing strip attachment plate.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: June 8, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Energy Systems & Solutions Corporation
    Inventors: Shunsuke Ishizaki, Ken Nagakura, Yuichiro Gunji, Norio Takahashi, Masahiro Seki
  • Patent number: 11025111
    Abstract: A rotor for connection to a stationary member for use in an electric machine is provided. The rotor includes a body defining a center of rotation of the body. The body further defines a first surface extending in a direction generally perpendicular to the center of rotation. The rotor also includes a magnet connected to the body and an adhesive. The adhesive is positioned between the magnet and the body. The adhesive is adapted to assist in securing the magnet to the body. The first surface of the body is adapted to permit removal of material from the body and to assist in balancing the rotor.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: June 1, 2021
    Inventors: Matthew Turner, Greg Heins, Chen Bin
  • Patent number: 11014224
    Abstract: Systems and methods for reducing vibration in power tool. One system includes a power tool that includes a housing and a motor. The power tool further includes a magnetically susceptible fluid located within the housing. The power tool further includes an inductor configured to introduce a magnetic field to the magnetically susceptible fluid. The power tool further includes a sensor configured to indicate an amount of vibration experienced by the power tool. The power tool further includes an electronic processor coupled to the sensor and to the inductor. The electronic processor is configured to receive an input signal from the sensor indicating the amount of vibration, to generate a control signal based on the input signal, and to provide the control signal to the inductor to control the magnetic field.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: May 25, 2021
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: John S. Dey, IV, Jacob P. Schneider, Matthew J. Mergener
  • Patent number: 11009057
    Abstract: A method for the connection of a first component to a second component includes providing a first component which has a projection with an undercut, and providing a second component which has a cavity. The method also includes introducing a sealing and/or connecting material into the cavity of the second component, and joining the first component and the second component together to form a component arrangement. The projection of the first component projects, in the joined state, into the cavity of the second component.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: May 18, 2021
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Helmut Reiter, Udo Reilaender
  • Patent number: 10958133
    Abstract: In an electric motor, a magnetic bearing generates an electromagnetic force between multiple permanent magnets and a coil and rotatably supports an other side of a rotation shaft in an axis line direction. The rotation shaft is configured to be capable of being inclined with a rotation center line using a bearing side of the rotation shaft as a fulcrum. An electronic control device controls a current that flows to the coil such that an axis line of the rotation shaft approaches the rotation center line due to a supporting force which is the electromagnetic force between the multiple permanent magnets and the coil. Accordingly, the rotation shaft is rotatably supported to be freely rotatable by a magnetic bearing and the bearing.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: March 23, 2021
    Assignees: DENSO CORPORATION, SOKEN, INC., National University Corporation Shizuoka University
    Inventors: Koji Ito, Masanori Yasuda, Shinji Makita, Jun Yamaoka, Masao Tokunaga, Etsuro Yoshino, Junichi Asama
  • Patent number: 10897179
    Abstract: A rotor for a rotary electric machine; the rotor has: a shaft, which is mounted so as to rotate around a rotation axis; a magnetic core, which is arranged around the shaft and consists of a plurality of lamination sheets stacked together; and a pair of end discs, which are arranged around the shaft at the two opposite ends of the magnetic core and are designed to keep the lamination sheets of the magnetic core stacked together; wherein the end discs are designed to have balancing holes, which dynamically balance the rotor around the rotation axis. Each end disc consists of an inner component with an annular shape, which is arranged around the shaft and is made of a first metal material, and of an outer component with an annular shape, which is arranged around the inner component and is made of a second metal material, which is different from the first metal material and is non-magnetic.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: January 19, 2021
    Assignee: MARELLI EUROPE S.p.A.
    Inventors: Marco Magri, Francesco Leli, Salvatore Stamato
  • Patent number: 10828582
    Abstract: An electric vehicle drive unit includes an inverter, a gear box, an electric motor coupled to the inverter and to the gear box, a cooling jacket, and coupled to the gear box, a main coolant inlet, a coolant outlet, and an external passive air bleed device. The cooling jacket has a cooling chamber and surrounds at least a portion of the electric motor. The main coolant inlet couples to the cooling jacket. The coolant outlet is located at a lower portion of the gear box. The external passive air bleed device runs between an upper portion of the cooling jacket and the coolant outlet. The inverter may couple to a first side of the gear box and the electric motor may couple to a second side of the gear box such that the inverter and the electric motor reside on opposite sides of the gear box.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: November 10, 2020
    Assignee: Tesla, Inc.
    Inventors: Vincent G. Johnston, Paul Daniel Yeomans, Riccardo Marco Pagliarella
  • Patent number: 10826347
    Abstract: A motor sleeve is applied to a motor housing and a motor driver housing. The motor sleeve includes a sleeve base, a second fixing structure, a second coupling structure and a plurality of base fins. The sleeve base includes an outer surface and an inner surface. The second fixing structure is disposed on the inner surface and located corresponding to a first fixing structure of the motor housing. The sleeve base is fixed to the motor housing by the first and second fixing structures. The sleeve base is installed on a side portion of the motor housing. The second coupling structure is disposed on the outer surface. The base fins are separately disposed on the outer surface and located corresponding to a first coupling structure of the motor driver housing. The motor driver housing is coupled to the sleeve base by the first and second coupling structures.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: November 3, 2020
    Inventors: Chen-Shi Chou, Zong-Lin Li
  • Patent number: 10816078
    Abstract: A planet gear train for an engine casing includes a sun gear rotatable by a shaft, a ring gear, a plurality of planet gears rotatably mounted in a planet carrier and meshing with the sun gear and the ring gear, and a damping system. The damping system includes a soft mount disposed about the shaft and coupling the planet carrier the engine casing. The soft mount includes a flexible inner sleeve and a flexible outer sleeve. The flexible inner sleeve and the flexible outer sleeve are fixedly coupled together at respective central portions thereof near the shaft. The damping system further includes a plurality of damping couplers disposed about an outer flange of the planet carrier. The plurality of damping couplers is configured to flexibly couple the flexible inner sleeve to the flexible outer sleeve.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: October 27, 2020
    Assignee: General Electric Company
    Inventors: Brandon Wayne Miller, Randy M. Vondrell, Donald Albert Bradley, Bugra Han Ertas
  • Patent number: 10758036
    Abstract: An adjustable table leg which includes an inner lead screw linking an inner lead screw nut to move an outer lead screw nut along an outer lead screw, so that the inner lead screw nut drives a lead screw outer pipe to link a leg middle pipe and the outer lead screw nut to drive a lead screw inner pipe to move an leg outer pipe up and down synchronously. Therefore, the upward and downward transmission is more stable, the upward and downward adjustment is smoother, the phenomenon of jamming does not occur, the adjustment precision is higher, the stress of the inner lead screw nut and the outer lead screw nut is more uniform, the fatigue degree is reduced, and the service life is increased.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: September 1, 2020
    Inventor: Weilin Lu
  • Patent number: 10734851
    Abstract: A motor includes a rotor frame; a shaft; first and second rotor magnets that are coupled with the shaft, formed separately, and spaced apart in an axial direction of the shaft; a stator portion having a stator core, a winding around the stator core, and a plurality of first salient pole portions; a torque holding portion facing the rotor magnets in a radial direction, being arranged between the rotor frame and the stator portion in the axial direction of the shaft, and having a plurality of second salient pole portions; and a circuit board arranged, in the axial direction of the shaft, on a side of the stator portion opposite the rotor frame. An electronic component is arranged at the circuit board.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: August 4, 2020
    Inventors: Akio Ando, Hirotaka Sato, Toshiyuki Nishikata
  • Patent number: 10724574
    Abstract: A bearing device includes an annular hub cap facing an inner ring. An inner annular surface of the hub cap abuts a part of one end surface of the inner ring which extends from an inner peripheral edge to an intermediate position located on the way from the inner peripheral edge to an outer peripheral edge. An annular adhesive retaining portion is formed between the area extending from the intermediate position to the outer peripheral edge of one end surface and at least an inclined annular surface of the hub cap.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: July 28, 2020
    Inventor: Tadashi Uchida
  • Patent number: 10707798
    Abstract: The present embodiment is a high rotor pole switched reluctance machine (HRSRM) which provides a plurality of combinations of the number of rotor poles Rn and number of stator poles Sn utilizing a numerical relationship defined by a mathematical formula, Rn=2Sn?Fp, when Sn=m×Fp, wherein Fp is the maximum number of independent flux paths in the stator when stator and rotor poles are fully aligned, and m is the number of phases. The mathematical formulation provides an improved noise performance and design flexibility to the machine. The mathematical formulation further provides a specific number of stator and rotor poles for a chosen m and Fp. The HRSRM can be designed with varying number of phases. The HRSRM provides a smoother torque profile due to a high number of strokes per revolution.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: July 7, 2020
    Assignee: Software Motor Company
    Inventors: Mahesh Krishnamurthy, Trevor Creary, Piyush Desai, Mark Johnston
  • Patent number: 10704566
    Abstract: The invention refers to a connector unit formed out a side piece of a blower housing and an engine mounting plate for a drive motor of a blower, whereby the engine mounting plate is attachable to the side piece in a variety of rotational or alternatively angular positions vis-à-vis a rotational axis that runs in an axial direction to the side piece.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: July 7, 2020
    Assignee: ebm-papst Landshut GmbH
    Inventors: Martin Deininger, Martin Hertreiter, Frank Schlopakowski
  • Patent number: 10697454
    Abstract: A method of manufacturing a two-piece counterweight for a scroll compressor is provided. The method includes molding an outer plate, and molding a base having a first opening configured to receive a scroll compressor drive shaft having a longitudinal axis, and configuring the base for assembly and attachment to the drive shaft. The method also includes attaching the outer plate to the base such that the outer plate is axially offset from the base. In a particular embodiment of this method, the base and outer plate are molded from powdered metal. In certain embodiments, the base and outer plate include one or more openings aligned to permit attachment by inserting a mechanical fastener through the aligned openings. In alternate embodiments, the base and outer plate are attached via brazing or welding.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: June 30, 2020
    Assignee: BITZER Kuehlmaschinenbau GmbH
    Inventors: Carl F. Stephens, Lauren A. Markley
  • Patent number: 10677061
    Abstract: A shear flow turbomachinery device includes a housing having housing walls defining a cavity, a shaft extending into the cavity though a shaft opening in the housing wall at an end of the cavity, a rotor coupled to the shaft within the cavity, the rotor having a plurality of disks extending radially outward from a central axis of the rotor, the disks having a spaced arrangement forming a gap between adjacent disks, and a shroud for shrouding the rotor, the shroud including a pair of end disks coupled to opposing ends of the rotor, a screen extending between outer edges of the pair of end disks, the screen extending around the rotor between the rotor and the housing walls, wherein the shroud is freely rotatable independent of rotation of the rotor to reduce drag on the disks due to the housing walls when the cavity if filled with fluid and the shaft and plurality of disks are rotated.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: June 9, 2020
    Inventor: Douglas Lloyd Lockhart
  • Patent number: 10668799
    Abstract: A rotary electric machine unit includes a rotary electric machine, a case accommodating the rotary electric machine, a power control unit configured to control the rotary electric machine and mounted on the case by directly connecting a unit-side connector provided on a bottom surface of the power control unit to a case-side connector provided on an upper surface of the case; and a sound absorbing member provided between the upper surface of the case and the bottom surface of the power control unit.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: June 2, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Satoshi Honjo, Hirofumi Suzumori
  • Patent number: 10666112
    Abstract: A system having a damper with six or more indentations on alternating sides of the damper, where each indentation is open to an outer circumferential surface of the damper and extends over halfway through a width of the damper, and six or more slots, each slot open to an undulating inner circumferential surface of the damper and extending through the width of the damper.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: May 26, 2020
    Inventor: William John Nicoloff
  • Patent number: 10650799
    Abstract: The disclosure relates to an active vibration absorption system for absorbing the vibrations of a vibrating element. The vibration absorption system comprises a structure-borne sound exciter having a coupling element for coupling to the vibrating element and having an electrical coil for moving the coupling element by means of a coil current. The structure-borne sound exciter is designed to provide a measurement signal correlated with a detected induced voltage. Furthermore, the vibration absorption system comprises a control device, which is designed to identify a target current intensity of the coil current in accordance with the measurement signal and to control an actual current intensity of the coil current to the target current intensity. The target current intensity is designed to adjust the motion of the coupling element in such a way that the vibrations of the element are at least partly absorbed.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: May 12, 2020
    Assignee: Audi AG
    Inventors: Gerald Dreffke, Lars Hinrichsen, Florian Bock
  • Patent number: 10644567
    Abstract: The present invention provides a motor including: a housing; a control part coupled to the housing; a stator assembly coupled to an inside of the housing and connected to the control part; a rotor disposed inside the stator; a rotary shaft coupled to the rotor; and a sensor connecting part including a body mounted on the housing and having a sensor mounting part, and a terminal included in the body and connected to the sensor mounting part and the control part, wherein the sensor mounting part is disposed outside the housing, and thus provides advantageous effects in that a configuration and an operation of connecting sensors to a control module are simplified, efficiency of an assembly operation is increased, and reliability of sensing information is improved.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: May 5, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Chan Seok Kim
  • Patent number: 10634497
    Abstract: The invention provides a laser beam projecting unit in which a hollow rotation shaft is provided on a fixed portion via one bearing, a rotor of an axial gap-type motor is provided on one end portion of the rotation shaft, a stator of the axial gap-type motor is provided on the fixed portion so as to confront the rotor, an attracting force between the rotor and the stator acts on the bearing as a pressurization, an angle detector for detecting a rotation angle of the rotation shaft is provided on the other end portion of the rotation shaft, a deflection optical component is provided inside the rotation shaft, and a laser beam is projected through the deflection optical component.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: April 28, 2020
    Assignee: TOPCON Corporation
    Inventors: Fumio Ohtomo, Hideyuki Matsumoto, Kazuki Osaragi, Takahiro Inoue
  • Patent number: 10637324
    Abstract: An electric actuator includes a motor having a rotary shaft. The electric actuator further includes a vibration damping gasket mounted on the motor. The vibration damping gasket includes an annular body attached around the motor and an end wall formed on one end of the annular body, and the end wall defines a through hole allowing the rotary shaft to pass therethrough. The motor further includes an outer housing, and the annular body of the vibration damping gasket is attached around the outer housing. The end wall of the vibration damping gasket contacts with the end surface of the outer housing. The vibration damping gasket is made from a resilient material. The electric actuator can effectively reduce the mechanical vibration, improve a buffering effect thereof, and hence reduce the noise.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: April 28, 2020
    Inventors: Dao Long Xiao, Jing Xin Shi, Yuan Feng Liu, Si Jun Zhao, Hong Min Wei, Shu Ze Li, Bin Liu, Xiang Chun Duan, Hui Juan Xing, Fei Fei Huang
  • Patent number: 10630139
    Abstract: A downhole-type system includes a rotatable rotor, a magnetic thrust bearing coupled to the rotor, and a mechanical thrust bearing coupled to the rotor. The magnetic thrust bearing is configured to support a first portion of an axial load of the rotor during rotor rotation, and the mechanical thrust bearing is configured to support a second portion of the axial load of the rotor during rotor rotation.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: April 21, 2020
    Assignee: Upwing Energy, LLC
    Inventors: David Biddick, Patrick McMullen, Kuo-Chiang Chen
  • Patent number: 10630136
    Abstract: An air-conditioning blower motor unit includes a brushless motor that is controlled by electronic parts arranged on a circuit board. A rotation shaft of the brushless motor that rotates a blower fan is rotatably held by bearing holders. The bearing holders and the circuit board are held by a support disk without overlapping each other. The support disk is held by the bearing holders via a vibration absorber.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: April 21, 2020
    Inventor: Masaaki Ishizaki
  • Patent number: 10619639
    Abstract: A motor includes a housing, a stator and a rotor. The stator is disposed in the housing. The rotor is rotatably supported on the stator. The motor further includes a shock absorbing member and a fastener. The fastener extends through the shock absorbing member and the stator, and the fastener is fixedly connected to the housing. The motor of the present invention operates with low noise. The present invention further provides a fluid delivery device using the motor.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: April 14, 2020
    Inventors: Yue Li, Mao Xiong Jiang, Ke Lin Zhou, Jian Zhao, Yong Li, Yong Wang
  • Patent number: 10615666
    Abstract: An electric motor having internal closed loop cooling includes a cooling chamber coupled to the stator cover of the electric motor. A fan is positioned to circulate air through the interior of the electric motor and the cooling chamber. A heat sink in the cooling chamber removes heat from the circulating air. The heat sink may be coupled to a fluid cooling jacket to transfer heat thereto or therefrom.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: April 7, 2020
    Assignee: Canrig Drilling Technology Ltd.
    Inventors: Charles Patrick, Kevin Williams
  • Patent number: 10574115
    Abstract: A power supply member 50 is provided with a convex part 60 that fits into either of a pair of cutout parts provided in a gear case, thereby positioning a connector connecting part 52 with respect to the gear case and a motor yoke along a circumferential direction of a rotating body. Thus, with a single power supply member 50 it is possible to form a seat motor with various specifications (disposition mode A and disposition mode B) wherein the protrusion direction of the connector connecting part 52 differs. Accordingly, the layout property can be improved, versatility can be increased, and yield can be improved.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: February 25, 2020
    Assignee: MITSUBA Corporation
    Inventors: Yosuke Tozuka, Naohiro Iwatate
  • Patent number: 10536045
    Abstract: A rotor for a rotating electric machine includes a field core having a plurality of claw-shaped magnetic pole portions, a field coil wound on the field core, and a hollow cylindrical core member disposed to cover radially outer peripheries of the claw-shaped magnetic pole portions of the field core. The core member is formed of a plurality of soft-magnetic bodies that are laminated in an axial direction of the core member. At least some of the soft-magnetic bodies forming the core member are fixed to one another by at least one staking portion that is formed along the axial direction of the core member.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: January 14, 2020
    Inventor: Yuki Takahashi
  • Patent number: 10527063
    Abstract: A motor compressor unit including a common housing sealed with respect to a gas to be compressed, a motor mounted to the common housing, and a compressor mounted to the common housing. The motor is mounted in an inner casing fastened in the common housing by at least one removable fastening device such that the motor and the inner casing form a removable cartridge.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: January 7, 2020
    Assignee: Thermodyne SAS
    Inventors: Thomas Alban, Pierre Laboube, Patrick Friez
  • Patent number: 10518427
    Abstract: A hair grooming device includes a body having a lower housing and a removable cover, the lower housing defining a substantially hollow cavity. The lower housing is formed of a first material. A liner is received by the lower housing in the cavity. The liner is formed of a second material, the second material is different than the first material.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: December 31, 2019
    Assignee: Andis Company
    Inventor: Andrew A. Skuhra
  • Patent number: 10522284
    Abstract: A coil fixing structure includes a substrate, which has a thickness in a vertical direction, and a coil, which is wound around an axis extending in a vertical direction and fixed to the substrate. The substrate includes a conductor portion and an insulating portion disposed on the conductor portion. The conductor portion includes a first land portion and a second land portion, which are exposed from an upper surface of the substrate. A first lead wire drawn from the coil has an end portion connected to the first land portion. A second lead wire drawn from the coil has an end portion connected to the second land portion. When viewed in a plan in the vertical direction, the first land portion and the second land portion are disposed to surround the coil.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: December 31, 2019
    Inventors: Zendi Mori, Mitsuru Murata
  • Patent number: 10498196
    Abstract: A vehicle rotating electrical machine has a rotor, a stator, a cooling fan provided in an axial direction end portion of the rotor and rotated integrally with the rotor, a housing, having an air intake provided opposing the cooling fan in an axial direction end portion, an annular rib provided adjacent to the air intake, and a discharge port provided across the annular rib, that houses the rotor and the stator and rotatably supports a rotary shaft, and a stay provided on a radial direction outer periphery of the housing, wherein the annular rib has an inner diameter side inclined cylindrical face, which inclines so that a diameter thereof becomes gradually smaller toward an inner side of the housing from an axial direction outer side end face of the air intake, and a sealing portion is provided between the stay and the annular rib.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: December 3, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuya Hasegawa, Takuya Ishida, Yoshihiro Shinosaka
  • Patent number: 10495145
    Abstract: Unique systems, methods, techniques and apparatuses of active magnetic bearing control systems are disclosed. One exemplary embodiment is a power converter electrically coupled to an active magnetic bearing (AMB) having a plurality of windings, the power converter comprising a DC bus, two capacitors, a first leg, a second leg, and a controller. The capacitors are electrically coupled in series between the positive rail and negative rail, one capacitor being electrically coupled to the other capacitor at a midpoint connection. The first leg comprises a first semiconductor switching device and a first output node. The second leg comprises a second semiconductor switching device and a second output node. The first output node is electrically coupled to the midpoint connection by way of a first AMB winding and the second output node is electrically coupled to the midpoint connection by way of a second AMB winding.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: December 3, 2019
    Assignee: Ingersoll-Rand Company
    Inventors: Lauri Juhani Salmia, Juha Tuomas Saari, Petri Juhani Maki-Ontto, Risto Komulainen
  • Patent number: 10479121
    Abstract: A method for processing an object for printing, the object comprising a plurality of properties defined at each of a plurality of locations within the object, each property represented by a metamer set of possible combinations of proportions of at least one of a set of printing materials, the method comprising: selecting a combination of the metamer sets of a given location within an object that provides all of the plurality of properties defined for the given location.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: November 19, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jan Morovic, Peter Morovic
  • Patent number: 10476350
    Abstract: An electric motor includes first and second balancing members coupled to an output shaft for rotation with a rotor. The first and second balancing members substantially balance a mass of the rotor about a longitudinal axis of the output shaft to reduce vibrations of the electric motor during use. The first balancing member includes a brass bushing supported on the output shaft adjacent a first face of the body of the rotor. The brass bushing includes a hole drilled into an outer circumference of the brass bushing providing a first balancing feature of the electric motor. The second balancing member includes a fan supported on the output shaft adjacent a second face of the body of the rotor. The fan includes a plurality of fins extending from a first face of the fan and a second balancing feature of material removed from a second face of the fan.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: November 12, 2019
    Inventors: Jeffery C. Hessenberger, Michael Kolden, Andrew T. Beyerl
  • Patent number: 10444106
    Abstract: A balancing method for balancing at high speed a flexible rotor of a rotary machine, the rotary machine having a stator, and the rotor being supported in the stator by at least two radial magnetic bearings. The balancing method including a step of placing the rotor inside the stator, a step of performing at least one first run in order to identify amplitude and angular location of the unbalance in a first speed range below critical speed, a step of placing first balancing masses inside the rotor on predefined first balancing planes, a step of performing at least one second run in order to identify amplitude and angular location of the unbalance in a second speed range above critical speed, and a step of placing second balancing masses inside the rotor on predefined second balancing planes.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: October 15, 2019
    Assignee: SKF Magnetic Mechatronics
    Inventor: Ulrich Schroeder
  • Patent number: 10436205
    Abstract: This fan motor includes a motor, an impeller arranged to rotate together with a rotating portion of the motor, a housing arranged to house the motor and the impeller therein, and a lead wire connected to the motor and arranged to extend outwardly of the housing. The housing includes a tubular portion, a bottom plate portion fixed below the motor, and a support portion arranged to extend from at least a portion of the tubular portion toward the bottom plate portion, and joined to at least a portion of the bottom plate portion. The support portion includes a groove portion recessed upward. The tubular portion includes a cut portion defined at a portion thereof continuous with the groove portion. The lead wire is drawn out of the housing through the groove portion and the cut portion. At least one of the groove portion and the cut portion has a thermosetting resin arranged therein.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: October 8, 2019
    Inventors: Shinsuke Hamano, Hiroshi Miyamoto, Jinsoo Cho
  • Patent number: 10384710
    Abstract: An electric power assisted steering system for vehicles is disclosed. The system includes an electric motor drive having a motor housing, a motor shaft, and at least a first bearing and a second bearing for mounting the motor shaft. At least one bearing plate receives one of the first and second bearings and the other of the first and second bearings is fixed in place on the motor housing in a radial direction. The system further includes a worm gear shaft operably connected to the motor shaft so as to be driven by the motor shaft, a worm gear wheel received in a transmission housing, the worm gear shaft meshing with the worm gear wheel, and at least one elastic element elastically coupling the at least one bearing plate to the motor housing such that the motor housing can tilt with respect to the at least one bearing plate.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: August 20, 2019
    Inventors: Michael Georg Figura, Erik Jurgen Stumpf
  • Patent number: 10348175
    Abstract: Provided are a rotor, a manufacturing method of the rotor, and a DC motor including the rotor, the rotor including: a core around which a winding is wound, the core being rotatable integrally with a shaft; a commutator being fixed to the shaft and having a terminal to be connected to one end of the winding; and a conduction plate being externally fitted onto the shaft via an insulator part between the terminal of the commutator and the core, the conduction plate having a connection part to be connected to the other end of the winding, wherein an axial direction position of the connection part is set in an intermediate portion that is between a winding projection of the winding and the terminal.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: July 9, 2019
    Assignee: MABUCHI MOTOR CO., LTD.
    Inventors: Kazuki Fukuhara, Kouichi Hashimoto
  • Patent number: 10336430
    Abstract: The invention relates to a pod propulsion unit of a ship. The pod propulsion unit comprises a pod housing arranged at least partly below a hull of the ship, an electric propeller motor within a motor gondola of the pod housing, an annular gap between a rotor and a stator of the electric propeller motor, and gas channels extending through the rotor, a closed cooling gas circuit, and a fan for circulating gas in the closed cooling gas circuit. The closed cooling gas circuit comprising a feeding duct extending between the return duct and the first motor end face of the electrical propeller motor, and a return duct extending between the feeding duct and the opposite second motor end face of the electrical propeller motor.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: July 2, 2019
    Assignee: ABB Schweiz AG
    Inventors: Antto Kosso, Lasse Lahtinen, Petri Säkkinen
  • Patent number: 10333375
    Abstract: To provide an electric motor enabling easy and high-precision balance correction, and a machine toll including this electric motor. An electric motor (1) includes: a cylindrical stator (2); a rotor (3) having a rotary shaft part (31) inserted inside of the stator (2); a housing (4) installed to both ends in an axial direction of the stator (2); an opening (51a) provided in at least one outer peripheral lateral face of the housing (4), and disposed to be separated from an internal space (S) of the stator and a ventilation passage (9) formed in the stator (2); and a balance correction component (6, 61) that is installed to the rotary shaft part (31), and corrects balance of the rotor (3), in which the balance correction component (61) is exposed to outside from the opening (51a); and a machine tool (10) includes this electric motor (1).
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: June 25, 2019
    Inventor: Yasuyuki Nakazawa
  • Patent number: 10326217
    Abstract: In a noise suppression device of a washer pump, a first capacitor and a second capacitor are disposed with their height directions along a first direction orthogonal to an axial direction of the washer pump. This thereby enables installation space for the first capacitor and the second capacitor to be suppressed from becoming larger in the axial direction. A second terminal of the second capacitor is disposed between first terminals of the first capacitor. This thereby enables the installation space of the first capacitor and the second capacitor to be made smaller in the first direction and in a second direction orthogonal to the axial direction. The space between the pair of first terminals (the second terminals) is accordingly efficiently utilized for disposing the second terminal (the first terminal), enabling the first capacitor and the second capacitor to be disposed efficiently.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: June 18, 2019
    Inventor: Satoshi Annen
  • Patent number: 10312768
    Abstract: An electric motor is provided which is designed to minimize a risk of corrosion or stress corrosion cracking of parts thereof and reduce mechanical vibration or noise. The electric motor includes an output shaft, a bearing which retains the output shaft, a frame, and a biasing member. The biasing member is made of austenite stainless steel and disposed between the bearing and a bottom wall of a bearing housing to elastically press the output shaft in a lengthwise direction thereof for eliminating mechanical noise arising from vibration of a rotor. The frame has a coating formed on an outer surface thereof for avoiding erosion thereof. The coating is not formed at least on a portion of the frame which faces the biasing member in order to induce sacrificial corrosion of the frame, which decelerates the corrosion of the biasing member to eliminate a risk of the stress corrosion cracking thereof.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: June 4, 2019
    Inventors: Hiroki Tomizawa, Koji Isogai
  • Patent number: 10286124
    Abstract: An inhalation device includes a nozzle, a separator, a housing, a battery portion, a circuit board, and a piezoelectric blower. The piezoelectric blower has a suction hole that opens near the center of an upper surface of the piezoelectric blower and a discharge hole that opens at the center of a bottom surface of the piezoelectric blower. The piezoelectric blower is mounted on a first main surface of the circuit board on the side of an upper housing. The circuit board applies a drive voltage to the piezoelectric blower to drive the piezoelectric blower. The circuit board has a through-hole facing the discharge hole. The through-hole overlaps the discharge hole, out of the suction hole and the discharge hole, when the first main surface of the circuit board is viewed from a front side.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: May 14, 2019
    Inventors: Daisuke Kondo, Kenjiro Okaguchi, Hiroshi Takemura
  • Patent number: 10161415
    Abstract: An electric pump may comprise a pump portion including an impeller, a motor portion configured to activate the pump portion, and a housing configured to contain the pump portion and the motor portion. The motor portion may comprise a rotor configured to activate the impeller, a stator configured to rotate the rotor, a control circuit configured to control a rotation of the rotor, a resin portion configured to cover the stator, and a heat transferring portion contacting the control circuit and the housing, thermal conductivity of the heat transferring portion being higher than thermal conductivity of the resin portion.
    Type: Grant
    Filed: February 22, 2014
    Date of Patent: December 25, 2018
    Inventor: Yoshihiko Honda
  • Patent number: 10137264
    Abstract: A head-mounted respiratory assistance apparatus configured to provide a respiratory gases stream to a user. The head-mounted respiratory assistance has a main body securable to the head of a user and a blower unit that is operable to generate a pressurized gases stream from a supply of gases from the surrounding atmosphere. A patient interface is provided on the main body that has a gases inlet which is fluidly connected to the blower unit and which is configured to deliver the pressurized gases to the user's nose and/or mouth.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: November 27, 2018
    Inventors: Adam John Darby, Donald Roy Kuriger, Johannes Nicolaas Bothma, Scott Bent
  • Patent number: 10095247
    Abstract: A method for detecting onset of oscillatory instability in a device is described. The method includes obtaining a symbolic time series of a time series signal corresponding to a dynamic state variable of the device. The method further includes detecting the onset of oscillatory instability in the device based on the symbolic time series.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: October 9, 2018
    Inventors: Vishnu Rajasekharan Unni, Vineeth Nair Vinod, Sujith Raman Pillai Indusekharan Nair, Achintya Mukhopadhyay
  • Patent number: 10079517
    Abstract: An outer rotor-type rotating electric machine includes a rotor and a stator. The rotor includes a plurality of magnets each of which extends in a circumferential direction of the rotor and is magnetized in a radial direction of the rotor. The stator is disposed radially inside the rotor. The stator has a plurality of stator teeth formed in a radial pattern. Each of the stator teeth has an inner circumferential width at its radially inner end and an outer circumferential width at its radially outer end. Moreover, the following relationship is satisfied: Wi/Wo?0.6, where Wi is the inner circumferential width and Wo is the outer circumferential width of each of the stator teeth.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: September 18, 2018
    Inventor: Shin Kusase
  • Patent number: 10079522
    Abstract: The invention relates to an electric machine (12) having a mounting flange (10) and to a method for producing an electric machine (12) of this kind having a mounting flange (10) of this type. Said mounting flange is arranged on a—preferably cylindrical—housing part (14) of said electric machine (12) in such a way that the mounting flange (10) at least in portions surrounds the housing part (14) in the circumferential direction (16) of said housing part (14), the mounting flange (10) and/or the housing part (14) being coated. The invention is characterized in that the mounting flange (10) has an at least radially directed raised portion (18) abutting the housing part (14), the mounting flange (10) being mounted on the housing part (14) by a welding process.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: September 18, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Thomas Keller, Christian Bauer
  • Patent number: 10069377
    Abstract: A flywheel assembly is provided which comprises a housing, a flywheel rotatably mounted in the housing and defining an inner and an outer circumferential surface, and an inner body spaced radially and inwardly from the inner circumferential surface of the flywheel. The flywheel rotates in use around and relative to the inner body, the assembly defines an engagement surface spaced radially and outwardly from the outer circumferential surface of the flywheel, and the inner body is flexibly coupled to the housing. If the flywheel mounting fails during rotation at speed leading to displacement of the flywheel, flexure of the coupling as a result of forces exerted on the inner body by the displaced flywheel allows the flywheel to contact the engagement surface.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: September 4, 2018
    Assignee: Williams Hybrid Power Limited
    Inventors: Ian D. Foley, Colin Tarrant