Patents Examined by Nguyen N Hanh
  • Patent number: 8614532
    Abstract: The present invention relates to a permanent-magnet synchronous motor, particularly an electric three-phase motor, comprising a stator having a stator yoke in which stator teeth with interposed stator grooves are arranged, wherein on each stator tooth at least one winding is provided, further comprising a rotor having permanent magnets, wherein the stator teeth are arranged in layers as disks in the axial direction of the stator and designed at least as two different disks, wherein the stator teeth in a first disk are connected peripherally among each other at the ends thereof pointing toward the rotor in the form of a stator star by a connecting bridge and in a second disk have an interruption instead of the connecting bridge. The present invention further relates to an electric power-assisted steering system.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: December 24, 2013
    Assignee: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Wurzburg
    Inventors: Grzegorz Ombach, Jacek Junak, Horst Steegmueller
  • Patent number: 8598754
    Abstract: The invention relates to a rotary electric machine with an eccentric rotor that comprises a stator and an eccentric rotor, the stator including a plurality of magnetic poles circumferentially distributed in order to define a closed cylindrical space, the rotor having a generally cylindrical shape with a diameter lower than that of said closed space and including a plurality of magnetic poles circumferentially distributed, the rotor rotating inside the closed space, wherein the machine further includes a shaft depending on the rotational component of the rotor, said machine being characterized in that, at the area of electromagnetic interaction between the stator and the rotor, the evolute of a stator pole and the evolute of a rotor pole have substantially equal lengths.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: December 3, 2013
    Assignee: Delachaux S.A.
    Inventor: Gilles Lacour
  • Patent number: 8593020
    Abstract: A motor for an electric vehicle includes a frame, a stator disposed in the frame, a rotor disposed to be rotatable with respect to the stator; and an engaging portion that restricts the stator from moving with respect to the frame in a circumferential direction, the engaging portion including at least one rib protruding from one of the surfaces of the frame and the stator, and at least one rib accommodation portion formed at other of the surfaces of the frame and the stator, wherein the at least one rib and the at least one accommodation portion are engaged to allow heat to be transferred therebetween. Under this configuration, a cooling performance may be improved and durability may be enhanced.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: November 26, 2013
    Assignee: LG Electronics Inc.
    Inventors: Kwangwook Chun, Jaeho Kim, Yunho Kim, Seungdo Han, Jiseong Park
  • Patent number: 8593028
    Abstract: A magnet for a generator is provided. The magnet includes a base magnet with a main surface having a length and a width and a skewed magnet module arranged at the main surface. A rotor of a generator including the magnet is provided as well as a generator with a stator and rotor including the magnet.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: November 26, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventor: Mohammad Kimiabeigi
  • Patent number: 8593008
    Abstract: An embodiment of a vertical axis wind turbine (VAWT) with a turbine shaft for transmitting mechanical power. Coupled to the turbine shaft is a support structure with a vane rotatably coupled to the support structure at a vane shaft. The vane rotates the vane shaft, support structure and the turbine shaft around the center of the turbine shaft when the vane is acted upon by the wind. A centrifugal compensation rod is connected to the vane. The centrifugal compensation rod counteracts the centrifugal forces acting upon the vane as the vane rotates about the center of the turbine shaft. Embodiments of the vertical axis wind turbine increase the efficiency of the wind turbine by reducing wind resistance. Some embodiments develop power when the vanes move into the wind instead of simply reducing drag on the side of the turbine that moves into the wind.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: November 26, 2013
    Inventor: Noel Richard Potter
  • Patent number: 8587169
    Abstract: An electric motor endshield includes a plate and a capacitor-mounting assembly particularly suitable for secure attachment to a capacitor. The mounting assembly includes a lug presenting a capacitor-engaging projection spaced outwardly from the endshield plate. The capacitor-engaging projection presents an inner face in an opposed relationship to the endshield plate to define a capacitor-retaining space therebetween. A peripheral lip of the capacitor housing is received within the capacitor-retaining space, and the housing lip engages the capacitor-engaging projection. The mounting assembly provides secure attachment of the capacitor to the endshield, thereby preventing inadvertent detachment of the capacitor during operation of motor.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: November 19, 2013
    Assignee: Nidec Motor Corporation
    Inventor: Craig E. Wallace
  • Patent number: 8587166
    Abstract: A spindle motor is provided, the motor including: a base plate; a PCB Printed Circuit Board arranged on an upper surface of the base plate; a bearing assembly coupled to the base plate; a stator coupled to a periphery of the bearing assembly; and a rotor rotationally coupled to the bearing assembly, wherein the base plate is formed with a foreign object inflow prevention fence to inhibit inflow of foreign objects into the stator and the base plate.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: November 19, 2013
    Assignee: LG Innotek Co., Ltd.
    Inventor: Hoeop Yoon
  • Patent number: 8587178
    Abstract: A rotor of an ultra high speed induction motor includes a stacked body having a plurality of loop type steel sheets stacked to form a cylinder, with a plurality of slots circumferentially formed in a lengthwise direction of the stacked body. Loop type upper, lower end rings are disposed on the upper and lower portions of the stacked body and having a plurality of upper and lower through-holes, respectively, to correspond to the slots. Conductive bars are coated with fusible bonding flux and are inserted into the upper through-holes, the slots, and the lower through-holes such that the conductive bars are integrally bonded into the upper through-holes, the slots, and the lower through-holes, following the fusion and solidification of the fusible bonding flux.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: November 19, 2013
    Assignee: GEM Co., Ltd.
    Inventors: Seungsu Hong, Seongu Yang
  • Patent number: 8581459
    Abstract: The brushless electric machine includes a first drive member (30U) having a plurality of permanent magnets (32U); a second drive member (10) having a plurality of electromagnetic coils and capable of movement relative to the first drive member (30U); and a third drive member (30L) disposed at the opposite side from the first drive member (30U) with the second drive member (10) therebetween. The second drive member (10) has magnetic sensors (40A, 40B) for detecting the relative position of the first and second drive members. The third drive member (30L) has at locations facing the permanent magnets of the first drive member (30U) a plurality of magnetic field strengthening members (32L) for strengthening the magnetic field at the location of the second drive member (10) in conjunction with the permanent magnets.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: November 12, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Kesatoshi Takeuchi, Mamoru Sugimoto, Yojiro Okakura
  • Patent number: 8581454
    Abstract: A handheld device comprises a housing, a motor, and a thermally conductive pad disposed in a space between the motor and the housing. Heat generated by the motor can be conducted by the thermal pad to the housing or to an internal fluid passage generally extending the length of the motor. In some embodiments, the thermal pad is configured to maintain the temperature of the housing in accordance with industry guidelines.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: November 12, 2013
    Assignee: Pro-Dex, Inc.
    Inventors: Richard A. Corrington, Francis James Steinmetz, Daniel Manuel Santos
  • Patent number: 8575804
    Abstract: A magnetic gear comprises a first permanent magnet field having a plurality of permanent magnet magnetic poles, a second permanent magnet field having a plurality of permanent magnet magnetic poles, number of poles of which magnet is different from that of the first permanent magnet field, and a modulating magnetic pole arranged between the first permanent magnet field and the second permanent magnet field and having a plurality of pole pieces to modulate the number of poles of the first and second permanent magnet fields. Non-magnetic bars are provided between the plurality of pole pieces. One ends of the non-magnetic bars are fixed to a first non-magnetic end holding member and the other ends of the non-magnetic bars are electrically insulated from and fixed to a second non-magnetic end holding member.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: November 5, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Junnosuke Nakatsugawa, Yuji Enomoto, Hirooki Tokoi, Hiroshi Morita, Norihisa Iwasaki
  • Patent number: 8575805
    Abstract: An electric motor rotor includes a core member having a plurality of locating grooves spaced around the periphery thereof and outer rotation-stopping portions, and a magnetic unit arranged around the periphery of the core member and defining a plurality of magnetic zones corresponding to the space between each two adjacent locating grooves. The magnetic unit can be a magnetic barrel having inner rotation-stopping portions for abutting against the outer rotation-stopping portions of the core member. Alternatively, the magnetic unit can be made comprising a plurality of magnets to form the multiple magnetic zones and a hoop for attaching to the magnets to secure the magnets to the periphery of the core member. Using the core member with the said two magnetic units can make two different rotors that have the common advantages of quick assembly, accurate alignment of magnetic zones and cost-effectiveness.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: November 5, 2013
    Assignee: Yen Shen Electric Ind. Co., Ltd.
    Inventor: Wei-Chung Su
  • Patent number: 8575807
    Abstract: An electric drive motor that is intended for a vehicle, in particular for a motor vehicle, includes a stator and a rotor with at least one pole pair, wherein each pole of a respective pole pair has a magnet arrangement having at least one buried magnetic layer. The drive motor is characterized in that each pole has a number of magnetic flux influencing groups, each of which has a number of air-filled recesses, which are not assigned to a magnet of a respective magnetic layer for purposes of flux conductance.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: November 5, 2013
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Joerg Merwerth, Jens Halbedel, Guenter Schlangen
  • Patent number: 8569921
    Abstract: According to one embodiment, a permanent-magnet type electric rotating machine has a stator, a magnetizing coil, a rotor and a case. The stator has an armature coil configured to form a magnetic circuit for driving. The magnetizing coil is configured to form a magnetic circuit for magnetizing. The rotor has a constant magnetized magnet, a rotor core and a variable magnetized magnet. The rotor core holds the constant magnetized magnet. The constant magnetized magnet is arranged closer to the magnetic circuit for driving than the variable magnetized magnet. The variable magnetized magnet is arranged closer to the magnetic circuit for magnetizing than the constant magnetized magnet.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: October 29, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuto Sakai, Yutaka Hashiba, Norio Takahashi, Kazuaki Yuuki, Makoto Matsushita, Daisuke Misu, Masanori Arata, Tadashi Tokumasu, Motoyasu Mochizuki, Kuniyuki Araki
  • Patent number: 8564160
    Abstract: A linear actuator, in particular for adjusting the flaps in motor vehicle turbochargers. The linear actuator has an adjusting element that can be linearly displaced by an electric motor. The electric motor is a two-phase transverse flux machine. A rotor is arranged between two opposite single-phase stators, and the rotor is connected in a rotationally fixed manner to a rotatable and linearly stationary rotational element that engages with the linearly movable adjusting element in order to cause a linear movement of the adjusting element when the rotational element is rotated.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: October 22, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Wolfgang Hill
  • Patent number: 8558421
    Abstract: A geared cooling device and method of manufacturing a geared cooling device. The cooling device includes a fan shaft, a fan coupled to the fan shaft and a speed adjuster coupled to a motor shaft of a motor and coupled to the fan shaft. The speed adjuster adjusts a rotational speed of the fan shaft to cause the fan shaft to rotate at a different rotational speed than the motor shaft to facilitate passing cooling air past the motor. The method of manufacturing includes coupling the speed adjuster to the motor shaft and to the fan shaft.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: October 15, 2013
    Assignee: General Electric Compant
    Inventors: Mandar Ranganath Rai, Sreeramachandra Ragidimilli, Sachin Vitthal Mahajan
  • Patent number: 8546992
    Abstract: The present invention provides an improved insulation structure for winding of motor stator, which is an improved design of structure for providing effective insulation for stator winding and improving winding volume. A stator piece that is arranged inside a motor body forms arrayed holes for wire winding. The holes receive insulation plates that are configured to correspond to the shape of the holes to be fit therein. Opposite ends of the stator piece receive end rings to fix and assemble thereto. End tabs formed at edges of the insulation plates are arranged to fit into and cover edge surface of a winding slot of each of the holes to realize complete coverage of the insulation for stator winding thereby ensuing operation safety when the motor is activated and put into operation.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: October 1, 2013
    Assignee: Headline Electric Co., Ltd.
    Inventors: Kuo-Shu Hsu, Chih-Yung Li, Chin-Hui Lin
  • Patent number: 8546985
    Abstract: The present invention refers to a high efficiency and cold electromagnetic motor that is able to considerably increase the electromagnetic and/or mechanic potential energy available to be used in any equipment fed by primary sources of energy. More specifically, the present invention refers to a motor, or also a generator, that comprises structural and functioning features that reduce the consumption of electric energy and, at the same time, deliver mechanic potential energy and work torque at least equivalent to the conventional electric motors.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: October 1, 2013
    Assignee: Associacao Keppe & Pacheco
    Inventors: Norberto da Rocha Keppe, Carlos César Soós, Roberto Heitor Frascari
  • Patent number: 8541924
    Abstract: An insulator assembly for a stator assembly of an electric machine includes an annular ring attached to a stator core, and a plurality of coil separators supported by the annular ring and extending from the annular ring axially along a longitudinal axis. One of the coil separators is disposed between each adjacent pair of the coils to prevent contact between adjacent coils having a different electrical phase. The coil separators are slideably inserted between the adjacent pairs of coils, with the annular ring positioning and supporting the coil separators.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: September 24, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Ryan Van Tiem, Edward L. Kaiser, John C. Morgante, Paul F. Turnbull, Michael C. Muir
  • Patent number: 8541921
    Abstract: The present invention relates to a stator for a motor having a stator core having an annular back yoke and teeth protruded annularly in a radial direction from the back yoke, a plurality of coils adapted to be wound on the teeth, and an insulator adapted to cover the stator core and the coils for insulation and having supporting ends formed sequentially to have different heights so as to support the plurality of coils thereon, thereby preventing the plurality of coils from being in contact with one another and locking projections formed at both sides or one side of the supporting ends so as to prevent the coils from escaping from the supporting ends, wherein each of the supporting ends has a stepped groove formed at a position spaced apart by a predetermined distance from the locking projections so as to allow the nozzle of the coil winding machine to be accessed thereto, and a total of the depth of the stepped groove and the height of each of the locking projections is larger than the radius of the nozzle.
    Type: Grant
    Filed: October 23, 2010
    Date of Patent: September 24, 2013
    Assignee: New Motech Co., Ltd.
    Inventors: Jeong Cheol Jang, Ji Min Lee