Patents Examined by Leda Pham
  • Patent number: 9419482
    Abstract: A rotor having an improved structure capable of achieving enhanced durability is disposed in a motor, the rotor including a sleeve having a shaft hole, through which a motor shaft extends, rotor cores spaced apart from one another in a circumferential direction of the rotor, and permanent magnets each disposed between adjacent ones of the rotor cores such that the permanent magnets are arranged in a radial manner about the sleeve. First and second cover plates may be disposed at opposite sides of the permanent magnets in an axial direction. Each of the first and second cover plates may include a shaft receiving hole to receive the motor shaft. The rotor may include a plurality of support members each having a magnet support portion arranged to support an outer end of a corresponding one of the permanent magnets in a radial direction of the rotor.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: August 16, 2016
    Inventors: Jae Young Lee, Young Gyu An, Deok Jin Kim, Young Kwan Kim, Byung Ryel In, Jin Woo Han
  • Patent number: 9419484
    Abstract: A stator includes an annular stator core and a stator coil. The stator coil is formed of electric conductor segments each of which is bent in its thickness direction to include, at least, an in-slot portion and an oblique portion. The in-slot portion is received in a corresponding slot of the stator core with its width direction coinciding with a radial direction of the stator core. The oblique portion protrudes from the in-slot portion outside the corresponding slot and extends, over its entire length, along the circumferential direction of the stator core obliquely with respect to an axial end face of the stator core. The oblique portion includes a thick section on the proximal side and a thin section on the distal side. Each corresponding pair of the oblique portions of the electric conductor segments are connected by joining the thin sections of the oblique portions.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: August 16, 2016
    Inventor: Takashi Tokizawa
  • Patent number: 9419491
    Abstract: A motor connecting member, which connects a motor winding and a terminal block, includes a terminal to be connected to the terminal block, a winding connecting portion to be connected to the motor winding, and an extended portion extending between the terminal and the winding connecting portion. The extended portion is made by plastically deforming a single wire having a circular cross section, and is bent in a predetermined shape fitted for connection between an end of the motor winding connected with the winding connecting portion and the terminal block.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: August 16, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kenichi Egami, Kazuhiko Tomita, Kazuyuki Watanabe
  • Patent number: 9397538
    Abstract: A linear motor with enhanced cooling performance, including: a stator including multiple magnetic force generating members provided in a row; a moving element including multiple coils provided in a row in an axis line direction of the stator and wound around an outside of the stator; and a heat transfer member dissipating heat generated by the coil which is between adjacent coils and along a side of the coils.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: July 19, 2016
    Assignee: FUJI MACHINE MFG. CO., LTD.
    Inventors: Jun-ichi Narita, Ryo Nagata, Masaki Kurono
  • Patent number: 9391483
    Abstract: To provide a rotary electric machine including a stator iron core, a rotor including a lamination core that is arranged within the stator iron core and is constituted by laminating electromagnetic steel plates and iron core holders that cover both ends of the lamination core, a frame including a cylindrical portion that encloses the stator iron core and the rotor and a rotor-shaft supporting unit that extends in the direction of a rotor shaft and supports the rotor shaft, and cartridges that are detachably attached to the rotor-shaft supporting unit and rotatably support the rotor shaft, in which on the iron core holder and the iron core holder, recessed portions are circumferentially provided, into which end portions of jigs that are inserted through the rotor-shaft supporting unit to enable the cartridges to be detached and attached are fitted.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: July 12, 2016
    Inventor: Kenta Kaneko
  • Patent number: 9369013
    Abstract: Disclosed therein is a rotor for a motor. The rotor includes: a rotor core including an annular ring having a shaft hole formed at a central portion thereof, a plurality of yokes formed around the annular ring, and magnet insertion holes formed between the neighboring yokes; magnets respectively inserted into the magnet insertion holes; and a pair of rotor covers each having a ring plate, which has a shaft insertion hole formed at a central portion thereof, and a plurality of stoppers protrudingly formed around the ring plate. A pair of the rotor covers are joined to an upper portion and a lower portion of the rotor core in such a fashion that the stoppers are respectively located at side portions of the magnet insertion holes.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: June 14, 2016
    Assignee: NEW MOTECH CO., LTD.
    Inventors: Jeong Cheol Jang, Ji Min Lee
  • Patent number: 9350207
    Abstract: An insulator of a motor includes a body portion and a wire guide portion. The body portion is arranged to cover an upper surface, a lower surface, and circumferential side surfaces of each of a plurality of teeth. The wire guide portion is arranged to project downward from the body portion. A drawn-out portion of an electric wire which extends from a coil is arranged to reach a land portion arranged on a lower surface of a circuit board after passing through the wire guide portion. In addition, an area of contact between the drawn-out portion and the wire guide portion is arranged at an axial height lower than that of the lower surface of the circuit board.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: May 24, 2016
    Inventor: Yoshiaki Oguma
  • Patent number: 9350220
    Abstract: A vibration generator includes a vibrator, a holder, and a plurality of coils. The vibrator includes a magnet and has a plate shape parallel to a horizontal surface. The holder is attached to a chassis and holds the vibrator such that the vibrator can be displaced with respect to the vibrator. The plurality of coils generate a magnetic field for changing at least one of a position and a posture of the vibrator with respect to the chassis. Each of the plurality of coils is a thin coil, and is arranged face to face with the vibrator. The vibrator can move at least according to magnetization of the coils, while deforming a portion of the holder.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: May 24, 2016
    Assignee: MINEBEA CO., LTD.
    Inventor: Minoru Kuroda
  • Patent number: 9343933
    Abstract: A rotating electric machine includes a rotor including: a rotor core divided into blocks in an axial direction, the blocks being arranged to have a phase angle therebetween in a circumferential direction, the rotor core having magnet through holes arrayed in the circumferential direction and formed in an outer circumferential region; and permanent magnets inserted into the magnet through holes. The magnet through hole includes: a magnet insertion portion into which the permanent magnet is inserted; and a non-magnetic portion provided on an outer side of the magnet insertion portion in the circumferential direction. A bridge portion is formed between the outer circumferential surface and an outer circumferential inner wall of the non-magnetic portion. A bridge angle, which is an angle between both circumferential ends of the bridge portion with a rotation center of the rotor core set as a vertex, is larger than a skew angle.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: May 17, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hitoshi Isoda, Masaya Inoue, Shinji Nishimura, Moriyuki Hazeyama, Tomoya Tachibana
  • Patent number: 9343934
    Abstract: An electric motor has a wound stator and a permanent magnet rotor. The rotor includes a shaft, a hub fixed on the shaft, a plurality of rotor core segments and magnets fixed around the hub. The rotor core segment includes at least two rotor blocks inwardly extending from the innermost portion thereof. The hub includes a plurality of hub blocks equidistantly and outwardly extending from the outer surface thereof. The rotor blocks of each rotor core segment engage with at least one hub block to fix the rotor core segment to the hub. The number of rotor blocks is greater than the number of hub blocks.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: May 17, 2016
    Assignee: Johnson Electric S.A.
    Inventors: Jian Zhao, Yue Li, Mao Xiong Jiang, Chui You Zhou, Yong Wang, Ya Ming Zhang
  • Patent number: 9337703
    Abstract: A thrust bearing assembly for supporting an end surface against an axial load, includes a first part with a chamber; a second part disposed in the chamber and having a load surface facing the end surface; and a third part fixed with the first part and spaced from the second part. A reservoir for storing lubricant is formed in the chamber between the second part and third part. A narrow passage communicates the reservoir with the load surface to allow the lubricant to flow from the reservoir to the load surface to lubricate the interface between the load surface and the end surface when the axial load rotates.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: May 10, 2016
    Inventors: James Ching Sik Lau, Duncan Yiu Lung Wong, Yuen Tung Louie
  • Patent number: 9337698
    Abstract: A rotating electric machine has a first frame and a second frame disposed at one axial end of a casing. The first and second frames have a first flange and a second flange, respectively, that protrude outwardly from the casing. The first and second flanges are fastened together by a through bolt. The first flange includes a recessed portion having a first curved portion, a second curved portion, and a third curved portion. A curvature radius of the third curved portion is greater than a curvature radius of the first curved portion and a curvature radius of the second curved portion such that a concentration of stress within the third curved portion that is caused by a fastening force of the through bolt may be reduced.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: May 10, 2016
    Inventors: Makoto Taniguchi, Hiroshi Imai
  • Patent number: 9325213
    Abstract: A motor connecting member, which connects a motor winding and a terminal block, includes a terminal to be connected to the terminal block, a winding connecting portion to be connected to the motor winding, and an extended portion extending between the terminal and the winding connecting portion. The extended portion is made by plastically deforming a single wire having a circular cross section, and is curved in a circular arc shape in at least one portion between the terminal and the winding connecting portion, and the at least one curved portion comprises a narrower conductor width in a radial direction than a diameter of the single wire before the plastic deformation.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: April 26, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventor: Kenichi Egami
  • Patent number: 9325232
    Abstract: Embodiments of an electrical power generation device and methods of generating power are disclosed. One such method comprises creating magnetic flux forces generally transverse to a face of a magnet facing a center of a cylinder, moving a coil of wound conductive material partially through the center opening of the cylinder to produce the electric current and, routing resistive forces generated from the moving coil through an iron core, wherein the first coil is positioned concentrically about a first portion of the core, and further routing the resistive forces around the cylinder.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: April 26, 2016
    Assignee: Linear Labs, Inc.
    Inventor: Fred E. Hunstable
  • Patent number: 9312735
    Abstract: A stator includes a core fixed to a case of a rotary electric machine, and a plurality of winding wire coils that are wound on the core and that form a coil end protruded in the axial direction of the core. The two winding wire coils have a first and second conducting wires that are exposed in a distal end of each of the two coils. The stator includes: a joint in which the first and second wires are joined together at the coil end and in which proximal portions of the two coils approach each other with an acute angle therebetween so that the first and second wires lie on each other; and an insulating coat formed to enclose the joint with an insulating material that is coated entirely over peripheries of the two coils in their circumferential directions while filling a space across which the proximal portions form the acute angle. A rotary electric machine includes the stator, the case and a rotor.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: April 12, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Akira Takasaki, Akihito Koike
  • Patent number: 9312734
    Abstract: An armature of a linear motor is provided. The armature includes an armature core having a plurality of teeth arranged linearly and spaced at predetermined intervals, and a plurality of bobbins fitted onto adjacent teeth, each of the bobbins having flange parts, a winding being wound around the bobbin to form a coil. At least one of the flange parts of the bobbin is formed with a first protrusion and a second protrusion. An overlapped section is formed by the first and second protrusions of two adjacent bobbins contacting or overlapping with each other.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: April 12, 2016
    Inventors: Yasuaki Kamiki, Seigou Nagamatsu
  • Patent number: 9300179
    Abstract: An electric rotating machine having high cooling performance is provided. The electric rotating machine is configured to include a rotor rotating around a rotational axis; and a stator disposed to face the circumferential surface of the rotor. The stator includes a stator core having a cylindrical core back and a plurality of teeth radially extending from the core back, and a stator coil wound around the teeth in concentrated winding via an insulation material. A spacer having electric insulation performance is attached between the stator coils each wound around the respective teeth adjacent to each other. The spacer has a coefficient of linear expansion greater than that of the stator core.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: March 29, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Itsuro Sawada, Hiroshi Hamano, Taisuke Ikeda, Yasuyuki Saito, Yuji Kano
  • Patent number: 9293962
    Abstract: The present invention relates to a hollow driving module comprising a hollow driving module including a hollow motor including a stator, a rotor rotating with respect to the stator and having a perforated center portion, and a rotation shaft disposed at and coupled to the perforated center portion of the rotor; a decelerator connected with the rotation shaft positioned at an output side of the hollow motor to decelerate rotation of the rotation shaft; a torque transmission unit being connected to an output side of the decelerator to be driven by a decelerated rotation angle; a first encoder positioned at an input side opposite to a side connected with the decelerator of the hollow motor; a second encoder positioned at a side opposite to a side connected with the hollow motor of the first encoder; and a link connection means connecting the second encoder with the torque transmission unit.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: March 22, 2016
    Inventors: Chan Hun Park, Jin-Ho Kyung, Tae Yong Choi, Hyun Min Do, Dong Il Park
  • Patent number: 9287760
    Abstract: An actuator that has two or more degrees of freedom that moves a payload are described. The actuator may have two members, an actuator stator and an actuator armature, with the ability to move relative to each other in two or more degrees of freedom.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: March 15, 2016
    Inventor: Eliezer Pasternak
  • Patent number: 9236786
    Abstract: Apparatus, methods, and other embodiments associated with mitigation of magnetic fields are described herein. In an embodiment, a method for mitigating an electromagnetic field includes positioning a mitigating coil around a linear alternator of linear motor so that the mitigating coil is coaxially located with an alternator coil; arranging the mitigating coil to generate a field to mitigate an electromagnetic field generated by the alternator coil; and passing an induced current from the alternator coil through the mitigating coil.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: January 12, 2016
    Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Steven M. Geng, Janis M. Niedra