Patents Examined by Nguyen N Hanh
  • Inner-rotor-type motor and claw-pole member thereof
    Patent number: 8384265
    Abstract: An inner-rotor-type motor includes a casing, a shaft and a claw-pole member. The shaft is rotatably coupled to the casing, and coupled to a permanent magnet having a magnetism-inducing surface. The claw-pole member is coupled within the casing and has an annular portion and a plurality of salient-poles. The annular portion has an inner circumferential wall. Each salient-pole is disposed between the annular portion and a respective pole plate. Each pole plate has a first side and a second side. The first side and the second side oppose each other. A magnetic pole surface is formed between the first side and the second side and faces the magnetism-inducing surface of the permanent magnet. An air gap is formed between the magnetic pole surface and the magnetism-inducing surface. Each pole plate has an extension portion and a shrinking portion. The coil unit is coupled to the plurality of salient-poles.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: February 26, 2013
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Alex Horng, Tso-Kuo Yin, Chin-Chia Huang
  • Rotary electric machine and the method for assembling it
    Patent number: 8384256
    Abstract: An electric machine (1) comprises; a casing; a stator (3) fixed to the casing and including at least one electrical winding (5); a rotor (4) housed in the casing and rotatably connected to the latter; an electronic circuit (8) for powering the winding (5) at least partly housed in the casing; a cover (2a) for closing the casing to form with the latter a sealed enclosure; a terminal strip (9), accessible from outside the sealed enclosure, for controlling and powering the electronic circuit (8); a heat sink, embodied by the cover (2a), for absorbing the heat produced, in particular, by the electronic circuit (8). The machine (1) also comprises elastic elements (12) operating between the stator (3) and the electronic circuit (8) in such a way as to press the electronic circuit (8) against the heat sink.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: February 26, 2013
    Assignee: Spal Automotive S.r.l.
    Inventor: Pietro De Filippis
  • Liquid cooling arrangement for electric machines
    Patent number: 8378534
    Abstract: A liquid cooling arrangement for electric machines uses a continuous cooling tube associated with a heat storing element. The cooling tube has a serpentine configuration and the heat storing element includes longitudinal slots starting from both longitudinal ends of the heat storing element. Accordingly, it is possible to slightly deform the heat storing element to properly position it into the internal stator of an electric machine. An internal biasing assembly may be used to force the external surface of the heat storing element to the internal surface of the stator.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: February 19, 2013
    Assignee: TM4 Inc.
    Inventors: Martin Houle, George Bursuc, Sebastien Bigras, Bruno Carpentier
  • Permanent magnet arrangement for an electrical machine
    Patent number: 8378544
    Abstract: A permanent magnet arrangement for an electrical machine comprises a support structure for carrying magnetic flux and a pole assembly fixed to the support structure. The pole assembly comprises a magnet pole comprising at least one piece of permanent magnet material and a magnet carrier on which the magnet pole is mounted and which provides a magnetic flux path between the magnet pole and the support structure. The permanent magnet arrangement further comprises a sleeve containing the magnet pole and at least part of the magnet carrier. The magnet carrier is secured to the support structure to fix the pole assembly to the support structure and the sleeve is clamped to the support structure by the magnet carrier. A method for assembling the permanent magnet arrangement is also described.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: February 19, 2013
    Assignee: Converteam Technology Ltd.
    Inventor: Paul Eaton Clark
  • Current control assembly with drainage and slinger
    Patent number: 8378548
    Abstract: The present approaches provide a current control assembly with a rotor and a stator. The stator includes a drain for channeling contaminants away from the assembly and the rotor includes one or more slots that rotate with the rotor for outwardly slinging the contaminants. In one embodiment, a system is provided that includes the current control assembly having a first ring including a first shaft opening and a first discharge opening. The current control assembly also includes a second ring having a second shaft opening and a second discharge opening, wherein the first and second rings rotate relative to one another, and the first and second discharge openings align with one another to discharge a contaminant. The current control assembly further includes a plurality of conductive filaments configured to transfer current between the current control assembly and a shaft.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: February 19, 2013
    Assignee: Illinois Tool Works Inc.
    Inventors: Hieyoung W. Oh, Jeffrey W. Richardson
  • Pulsed multi-rotor constant air gap switched reluctance motor
    Patent number: 8373328
    Abstract: An electric motor with two or more stator sections, each possessing at least two salient pole projections having power windings, and two or more armature sections on a common shaft. The armature sections are at an angle to each other: e.g. 90 degrees for two armatures, 120 degrees for three armatures. Each armature has a lamination stack or ferrite core. The armature sections form a constant air gap with the field poles, and have an elliptical profile with respect to the output shaft. The armature sections have no electrical windings, or conductors and require no slip rings, rotor coils or permanent magnets. The power windings are energized by pulses of electric current. Said pulses are automatically supplied to the salient pole nearest the longest rotor flux path available, as determined by a shaft position sensor.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: February 12, 2013
    Assignee: Convergent Power, Inc.
    Inventor: James F. Murray
  • Terminal lead insulator assembly for wound field synchronous machine
    Patent number: 8373318
    Abstract: A terminal lead insulator assembly for use in a wound field synchronous machine has a generally cylindrical skirt extending in a first direction from a radially larger face. The radially larger face is formed with a plurality of radially outwardly extending ears. The ears include central openings for receiving electrical connections. A rotor assembly, a wound field synchronous machine and a method of assembling such a rotor assembly, each of which include the terminal lead insulator assembly as mentioned above, are also disclosed and claimed.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: February 12, 2013
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Dhaval Patel, Jan Henry Abels, Eric J. Cunningham
  • Linear oscillatory actuator
    Patent number: 8373315
    Abstract: A linear oscillatory actuator includes a magnetic pole forming portion that includes an electromagnet and a base, magnetic blocks each of which includes a magnet attracted or repelled by the electromagnet to reciprocate, elastic suspensions for supporting the magnetic blocks, and at least one coupling spring portion that couples the magnetic blocks reciprocatably. Each of the elastic suspension includes upper and lower extending portions, and elastic planar portions integrally provided between the upper extending portions and the lower extending portions, respectively. Depressed portions are formed at continuous portions between the upper extending portions and the elastic planar portions, respectively, and each of the depressed portions is depressed toward the magnetic blocks. While the magnetic blocks reciprocate, Stress concentration on the continuous portions can be mitigated by the depressed portions.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: February 12, 2013
    Assignee: Panasonic Corporation
    Inventors: Noboru Kobayashi, Hiroaki Shimizu, Kensaku Kanada
  • Motor
    Patent number: 8368262
    Abstract: The present invention provides a motor (M) including a case (1) storing an armature (3) having a winding wire (2) wound thereon on the inner circumferential side, in which the case (1) includes an opening part (1a) for inserting a terminal (5) for connecting the winding wire (2) to an external power source, and the terminal (5) is integrated into a resin for forming a cap (6) for air-tightly closing the opening part (1a) by insert molding, with one end (5a) of the terminal (5) being protruded into the case (1) and the other end (5b) of the terminal (5) being protruded out of the case (1).
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: February 5, 2013
    Assignee: Kayaba Industry Co., Ltd.
    Inventors: Ikuhito Ishizue, Takuhiro Kondo, Naoto Natsume, Masayuki Echizen
  • Magnetically suspended flywheel energy storage system with magnetic drive
    Patent number: 8368271
    Abstract: Techniques for flywheel energy storage devices including magnetic bearings and/or magnetic drives are generally disclosed. Some example magnetic bearings may include a flywheel magnet and a support magnet arranged to magnetically suspend a rotating flywheel. Some example magnetic drives may include at least one drive magnet arranged to magnetically engage a diamagnetic material associated with the flywheel to exert torque on the flywheel.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: February 5, 2013
    Assignee: Empire Technology Development LLC
    Inventor: Daniel C. Wiggins
  • Motor
    Patent number: 8368261
    Abstract: The present invention provides a motor (M) including a rotor (1), a stator (S) having a winding wire (2) wound thereon, and an outer cylinder (3) for holding the stator (S) fitted into the inner circumference thereof. The stator (S), the outer cylinder (3), and a terminal (4) having one end (4a) connected to the winding wire (2) are integrated together by a mold resin (12) by insert molding while closing one end side of the outer cylinder (3) by the mold resin (12), and protruding the other end (4b) of the terminal (4) out of the motor (M) through the mold resin (12).
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: February 5, 2013
    Assignee: Kayaba Industry Co., Ltd
    Inventors: Ikuhito Ishizue, Takuhiro Kondo, Naoto Natsume, Masayuki Echizen
  • Electric motor integrated hydraulic motor
    Patent number: 8358042
    Abstract: The present invention provides a small-size light-weight electric motor integrated hydraulic motor which is simple in configuration, integrally includes an electric motor and a hydraulic motor, and is capable of efficiently operating, by being configured such that: a swash plate type hydraulic motor and an electric motor driven by the swash plate type hydraulic motor are provided in one casing; the casing is filled with oil; a driving shaft of the swash plate type hydraulic motor is configured to extend from a front end portion of the casing up to a rear end portion thereof and be supported at the front and rear end portions of the casing; the swash plate type hydraulic motor and a rotor of the electric motor are provided in series at the driving shaft; and a stator of the electric motor is fixed to an inner side portion of the casing.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: January 22, 2013
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Masahiro Yamada, Ryo Yamamoto
  • Magnet generator
    Patent number: 8354763
    Abstract: In a flywheel-type magnet generator, a heat dissipation member which has no relation with a magnetic circuit is fitted into a space formed by cutting a bulk of a laminated core used for configuring the magnetic circuit, a cooling tube installed to be inserted into or penetrate the heat dissipation member is provided, and by supplying a cooling medium to the cooling tube, cooling performance of the stator is enhanced.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: January 15, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventor: Mitsuharu Hashiba
  • Permanent magnet machine
    Patent number: 8350431
    Abstract: A permanent magnet electric machine with optimum motoring efficiency is disclosed. It is adapted for use in a hybrid electric vehicle powertrain. An asymmetric magnetic flux distribution pattern in the rotor of the machine is established by asymmetrically positioning rotor openings relative to rotor magnets to improve operating efficiency of the machine when it is in a motoring mode.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: January 8, 2013
    Assignee: Ford Global Technologies, LLC
    Inventors: Feng Liang, Michael W. Degner, Alfredo R. Munoz
  • Rotating electrical machines
    Patent number: 8350422
    Abstract: A torsional vibration damper is integrated into a rotating electrical machine. A rotatable assembly of the electrical machine includes a rotor core pack having a first end and a second end. The integrated torsional vibration damper consists of a torsional elastic coupling and a torsional elastic damper and provides mechanical damping. The integrated torsional vibration damper is mounted to the rotatable shaft of the electrical machine by a flange. The rotor core pack is mounted at the first end to the integrated torsional vibration damper by suitable structure members such as a mounting flange and is not fixedly mounted directly to the rotatable shaft. In the case where the rotor core pack is cooled by circulating coolant fluid (e.g. MIDEL) then the integrated torsional vibration damper may be a viscous damper that uses the coolant fluid as a viscous working fluid.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: January 8, 2013
    Assignee: Converteam Technology Ltd.
    Inventors: Stuart Ian Bradley, Graham Derek Le Flem
  • Stator for use in electric rotating machine
    Patent number: 8344573
    Abstract: A stator for use in an electric rotating machine is provided which includes a stator winding wound through slots of a stator core. The stator winding is made up of a plurality of conductor segments connected together. Each of the conductor segments includes an in-slot portion disposed inside one of the slots and out-slot portions extending from the in-slot portion outside at least one of the ends of the stator core. Ends of the out-slot portions are joined together to form the stator winding. The joints of the ends of the out-slot portions have a given pattern of texture formed on surfaces thereof and coated with an insulating material. The pattern of texture enhances the adhesion of the insulating coatings to the surfaces of the joints and ensures the stability in electric insulation of the joints.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: January 1, 2013
    Assignee: Denso Corporation
    Inventors: Syo Hasegawa, Keigo Moriguchi, Hiroaki Takeda
  • Solid phase welding of aluminum-based rotors for induction electric motors
    Patent number: 8344577
    Abstract: Squirrel cage rotors of aluminum end rings solid state welded to aluminum conductor bars for use in electric motors and methods of making them are described. In one embodiment, the method includes: providing a laminated steel stack having a plurality of longitudinal slots; placing a plurality of aluminum conductor bars in the longitudinal slots, the conductor bars having first and second ends extending out of the longitudinal slots; contacting the first and second ends of the conductor bars with a pair of aluminum end rings under pressure; and oscillating the first and second ends of the conductor bars, the end rings, or both to form an oscillation friction weld.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: January 1, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Richard J. Osborne, Yucong Wang, Qigui Wang
  • Stator for electric rotating machine
    Patent number: 8344574
    Abstract: A stator for an electric rotating machine includes a stator coil that is formed of a plurality of electric wire segments each of which is comprised of an electric conductor and an insulating coat covering the electric conductor. The electric wire segments include a joined pair of first and second electric wire segments. Each of the first and second electric wire segments has an end portion of a first predetermined length where the electric conductor is not covered by the insulating coat. The end portions of the first and second electric wire segments are joined together. For each of the first and second electric wire segments, the insulating coat has, at its boundary with the end portion of the electric wire segment, a peeled portion of a second predetermined length which has a distal end peeled from the electric conductor and a proximal end remaining attached to the electric conductor.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: January 1, 2013
    Assignee: Denso Corporation
    Inventors: Atsuo Ishizuka, Akihito Koike
  • Power tool
    Patent number: 8338997
    Abstract: According to an aspect of the present invention, there is provided a power tool including: a motor that generates a rotational force; a power transmission mechanism that is driven by the motor to transmit the rotational force and that is connected to a bit; and a housing that houses the motor and the power transmission mechanism therein, wherein an electric fan for cooling the power transmission mechanism or the motor is provided inside the housing, wherein the power transmission mechanism, the motor and the electric fan are arranged in this order from front, and wherein the electric fan is disposed at a rear side so as to be interposed between the motor and a back wall of the housing.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: December 25, 2012
    Assignee: Hitachi Koki Co., Ltd.
    Inventor: Tomomasa Nishikawa
  • Electric machine with isolated ground electronics
    Patent number: 8339000
    Abstract: An electrical system for a vehicle comprises a battery including a positive terminal and a negative terminal, and an alternator. The alternator includes a metal housing with a rotor and a stator positioned within the housing. The alternator further includes an electronics package positioned on the alternator housing. The electronics package includes a regulator and a rectifier, the rectifier including a plurality of negative diodes and a plurality of positive diodes. The plurality of positive diodes are positioned on a first diode carrier that is electrically connected to the negative terminal of the battery. The plurality of positive diodes are positioned on a second diode carrier that is electrically connected to the positive terminal of the battery. The first diode carrier is separated from the housing by an electrical insulation member positioned between the first diode carrier and the housing.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: December 25, 2012
    Assignee: Remy Technologies, LLC
    Inventor: Michael D. Bradfield