End Turn Supports Patents (Class 310/260)
  • Patent number: 8093769
    Abstract: A rotating electric machine including an edgewise coil formed of a rectangular wire is efficiently cooled. The edgewise coil is formed by winding the rectangular wire around a tooth. In order to wind the rectangular wire around the tooth of rectangular shape, supporting portions determining the position of the edgewise coil relative to the tooth are provided. A coolant flows through a cooling water channel provided between the tooth and the edgewise coil formed of the rectangular wire and positioned by the supporting portions.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: January 10, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Tomoka Sonohara
  • Patent number: 8084914
    Abstract: A downhole electric motor device has a longitudinally extending tubular housing; a stator part deployed within the tubular housing; a stator coil winding looped through the stator part with an end turn having an apex; and a connecting device connecting between at least one of the coil windings and an end of the housing adjacent to an end of the stator part, thereby supporting the coil winding.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: December 27, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Patrick M. McCartney, David Fielder
  • Patent number: 8074343
    Abstract: A method for the production of a supporting basket (1) for an end winding of a stator winding of an electrical machine includes preassembling the supporting basket (1), mounting electrically insulated round connectors (6) on the supporting basket (1), immersing the supporting basket (1) with the mounted round connectors (6) in an impregnation agent bath (12), evacuating the impregnation agent bath (12), and removing the supporting basket (1) with the mounted round connectors (6) from the impregnation agent bath (12), and drying, curing, or both, the impregnation.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: December 13, 2011
    Assignee: ALSTOM Technology Ltd.
    Inventors: Daniel Hediger, Francesco Stallone
  • Patent number: 8076819
    Abstract: According to one embodiment, a rotary machine stator includes a cylindrical stator core, an insulating film, and a ring-shaped insulator. The stator core includes a slot and a slot opening. The insulating film is formed cylindrical to be in close contact with the inner surface of the slot. The insulating film includes a gate on both ends that is bent to form a film opening as wide as or wider than the slot openings. The insulating film is inserted in the slot such that a film axial direction end of the insulating film protrudes from an axial direction end of the stator core. The insulator is attached to both ends of the stator core. The insulator includes an insulator slot and an insulator opening in substantially the same shape as the slot and the slot opening, respectively, and a lock to lock the film axial direction end.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: December 13, 2011
    Assignee: Fujitsu General Limited
    Inventor: Yoshihiro Taema
  • Patent number: 8063523
    Abstract: A pair of connecting wire hooks are disposed on both sides of a nozzle receiving groove in an extended slot space (a first extended space) to sandwich an extended portion of an extended virtual space (a third extended space). In this configuration, the pair of connecting wire hooks are not located within the third extended space. Thus, in the stator for rotary electric machine, the space factor of the winding portion may be increased in a situation where the connecting wire hook is disposed within the first extended space.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: November 22, 2011
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Masaaki Oohashi, Youichi Horiuchi, Yasushi Yoda, Kouji Nakatake
  • Patent number: 8049393
    Abstract: A rotor for an electric machine includes a rotor yoke having a plurality of axial winding slots distributed on an outer periphery of the rotor yoke; a winding bar disposed in one of the plurality of axial winding slots, the winding bar having at least one winding end emerging axially from the rotor yoke so as to form an end winding; and a retaining device including a plurality of radial bolts, each of the plurality of radial bolts having a head fixedly connected to a shank, wherein the retaining device retains the end winding against a centrifugal force acting on the end winding.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: November 1, 2011
    Assignee: Alstom Technology Ltd
    Inventors: Alexander Schwery, Matthias Schmid, Josef Schwanda, Susanne Binder
  • Patent number: 8022592
    Abstract: Each coil fixing member is placed between a stator coil and at least one end surface of a stator core in an electric rotary machine in order to suppress a displacement between the stator core and the stator coil. The coil fixing member consists of a spacer and a bolt. The bolt and a corresponding screw hole formed on an end surface of the stator core are used to fix the stator core in the electric rotary machine. The spacer consists of a main body part and a bolt fixing part. The bolt fixing part has a bolt hole. The main body part has a tapered shape. The main body part is placed between the end surface of the stator core and connection parts of windings of the stator coil, and fixed to the stator core by the bolt through the bolt hole of the bolt fixing part.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: September 20, 2011
    Assignee: Denso Corporation
    Inventor: Hiroshi Kaneiwa
  • Patent number: 7994681
    Abstract: A motor having a rotor and a stator that houses the rotor in a rotatable manner is herein provided. One of the rotor and the stator comprises at least one permanent magnet. The other of the rotor and the stator comprises at least one core that faces the at least one permanent magnet, and at least one coil that magnetizes the at least one core. The core comprises at least one extension plate that is formed on at least one end face of the core in an axial direction. The extension plate extends parallel to rotation axis of the rotor, and has a magnetic anisotropy whose axis of easy magnetization is substantially parallel to the rotation axis of the rotor.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: August 9, 2011
    Assignee: Aisan Kogyo Kabushiki Kaisha
    Inventor: Masaki Ikeya
  • Patent number: 7956507
    Abstract: In a rotor for a rotating electrical machine, a flange of an insulating bobbin is formed with a first hook portion and a second hook portion. The first hook portion directs a lead of a field coil both against the winding direction of the field coil and radially inward. The first hook portion has a first groove in which is hooked a proximal portion of the lead. The second hook portion directs the lead axially outward. The second hook portion has a second groove which has an open end on a radially inner periphery of the second hook portion, a closed end positioned radially outward of the open end, and a neck between the open and closed ends. The second hook portion has an intermediate portion of the lead hooked in the second groove between the neck and closed end of the second groove.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: June 7, 2011
    Assignee: Denso Corporation
    Inventor: Takashi Tokizawa
  • Patent number: 7952240
    Abstract: A rotary electric machine having a stator including a coil; and a cooling unit that cools a coil end of the coil, which projects in an axial direction of the stator, wherein the cooling unit includes: an outer periphery cooling portion that is disposed along an outer peripheral surface of the coil end and includes a plurality of injection holes that inject a cooling medium onto the outer peripheral surface; and an end surface cooling portion that is disposed along an axial end surface of the coil end and includes a plurality of injection holes that inject the cooling medium onto the axial end surface.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: May 31, 2011
    Assignee: Aisin AW Co., Ltd.
    Inventors: Masayuki Takenaka, Yasunari Furuta
  • Patent number: 7936116
    Abstract: An objective is to provide a motor stator that may achieve: a reduction in parts costs by shaping coil ends so that length thereof is reduced, thereby reducing the amount of use of copper, and minimizing the amount of use of binding strings for securing the coil ends in place; a reduction in manufacturing process costs by a structure which allows a protector and a wire lead outlet part to be easily assembled; and then an improvement in quality of a stator by firmly holding the coil ends and the protector.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: May 3, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroki Asou, Mamoru Kawakubo, Mineo Yamamoto, Hiroyuki Ishii, Tougo Yamazaki
  • Patent number: 7928625
    Abstract: Dynamoelectric device and stator bar therefor, where the stator bar includes a linear portion for positioning in a slot of a stator core, the slot extending in a radial direction relative to an axis of the stator, and an end arm portion having an involute-on-cone bend relative to the linear portion and an elongated cross-section that is substantially aligned with the radial direction of the slot.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: April 19, 2011
    Assignee: General Electric Company
    Inventor: James Oldham Lambert
  • Patent number: 7898143
    Abstract: A rotary electric motor includes a cylindrical rotor having an outer peripheral side, a stator provided to surround the outer peripheral side of the rotor with a gap between the stator and the rotor, and a load side bracket having a recess and provided on a load side of the stator. The stator includes stator coils and a stator core having teeth portions around which the stator coils are wound. A load side coil end of each of the stator coils protrudes from a load side end face of the stator core. At least two of an inner peripheral surface, an outer peripheral surface, and an end face of the load side coil end contact an inner surface of the recess via an insulator.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: March 1, 2011
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventor: Tuyoshi Nonaka
  • Patent number: 7872392
    Abstract: A rotating electrical machine, especially a turbogenerator, includes a rotor and a stator, which concentrically surrounds the rotor and is terminated at each of the two axial ends by a laminated press plate (14), which is constructed from a stack of individual press plate laminates (30). The electrical properties are improved by providing the press plate laminates (30) at least partially with slits (26) for reducing the eddy current losses.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: January 18, 2011
    Assignee: ALSTOM Technology Ltd.
    Inventors: Johann Haldemann, Reinhard Joho
  • Patent number: 7868495
    Abstract: An electric motor core member includes a body having an inner diametric portion including an inner arcuate surface and an outer diametric portion including an outer arcuate surface. The electric motor core member further includes a plurality of wall members provided on the main body. Each of the plurality of wall members projects outwardly from the outer arcuate surface and is arranged in a spaced relationship to define a plurality of conductor isolation channels. Each of the plurality of conductor isolation channels is adapted to receive one of a plurality of conductors with the plurality of wall members providing electrical isolation between adjacent ones of the plurality of conductors.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: January 11, 2011
    Assignee: Remy Technologies, L.L.C.
    Inventors: Brad Chamberlin, Steven C. Burton, Sean Stanley
  • Patent number: 7851955
    Abstract: An electric motor that does not provide new terminals for carrying out conductive caulking, and further, facilitates the work of using a conductive caulking machine. An electric motor coil connecting structure that connects conductors connected to a power input member and lead terminals of coils by conductive caulking and connects the power input member and the lead terminals of the coil electrically. One end of each of the conductors is formed into a terminal-shaped portion in which the lead terminals of the coil can be fitted and temporarily retained. The lead terminals of the coil are fitted in the terminal-shaped portion of the conductors and temporarily retained, and connected by conductive caulking.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: December 14, 2010
    Assignee: Fanuc Ltd
    Inventors: Tomonaga Yamamoto, Hidetoshi Uematsu
  • Patent number: 7821171
    Abstract: A wedge placed between adjacent coils in a generator comprises a wedge body having a generally triangular portion to be positioned at a radially inner location, and a radially outer portion. The radially outer portion includes ends that will be spaced at axial ends of the wedge when the wedge is positioned within a generator. The ends have a first surface spaced a first distance from an apex of the triangle. The end walls extend above the first surface at each of two spaced positions axially inwardly of the ends of the wedge. The end walls are connected to side walls that extend near circumferential edges of the wedge. An open pocket is formed within the wedge body at locations between the side walls and axially between the end walls.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: October 26, 2010
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Glenn C. Lemmers, Jr., Laurence D. Vanek
  • Patent number: 7812499
    Abstract: An armature winding of an electric rotating machine is provided, which includes at least one armature winding bar composed of a plurality of element wire conductors, wherein the armature winding bar includes an element wire conductor configured to have twisted transposing angles of 180 degrees at one border zone and a middle zone in a winding slot and a twisted transposing angle different from 180 degrees at the other border zone of the winding slot of the element wire conductor.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: October 12, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masafumi Fujita, Tadashi Tokumasu, Mikio Kakiuchi
  • Patent number: 7795776
    Abstract: An oscillation damping system for stator windings is provided which includes a supporting component of an end winding. The supporting component is equipped with damping elements, which are arranged asymmetrically in the circumferential direction in order to suppress excited natural oscillations. Masses or springs and screw-type restraints which connect the supporting component to the stator housing are suitable as damping elements.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: September 14, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ronald Beck, Ulrich Ehehalt, Waldemar Kowalski, Christoph Lehmann, Christoph Richter, Karlheinz Spiess
  • Patent number: 7786644
    Abstract: An electric rotary machine, an armature for use in the electric machine, a method of forming an electric rotary machine and a forming machine for an armature of an electric rotary machine are disclosed wherein insulator-coated coils are wound in slots of an armature core from which lower and upper layer coil extensions extend and are connected to a commutator. The upper layer coil extension has a contour deformation part at an intersecting region where the lower and upper layer coil extensions intersect with each other to have an insulating distance between the lower and upper layer coil extensions. The forming machine includes a work holder holding the armature, and a forming jig forming a curvature portion on the upper layer coil extension.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: August 31, 2010
    Assignee: Denso Corporation
    Inventors: Kazuyuki Kitou, Akiyasu Itoh, Katsunobu Inoue, Eiji Sakai, Minoru Fukui
  • Patent number: 7763996
    Abstract: A baffle for guiding cooling fluids in a power generator cooled by a cooling fluid and having a flange, a stator, and an end stator has an inclined surface configured to direct a first portion of the cooling fluid flow towards the flange, a second portion of the cooling fluid flow towards the end stator and a third portion of the first portion towards an angled surface of the flange.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: July 27, 2010
    Assignee: General Electric Company
    Inventors: Richard Nils Dawson, Samir Armando Salamah, Rebinth Jose Robin, Sandip Shahaji Hirade
  • Patent number: 7745969
    Abstract: An electrical machine includes a basic bed having a opposite axial end sides and slots, wherein the slots an the end sides have each a slot end opening. A winding system has electrical conductors which are accommodated in the slots wherein the electrical conductors extend out on one of the end sides of at least one of the slot end openings. The electrical conductors are hereby laid within a bridging region extending in a circumferential direction on the at least one end side and are inserted into at least one other one of the slot end openings. Arranged on the at least one end side in the bridging region is a first guide element for guiding the electrical conductors of a first subwinding of the windings stem. An end late is arranged on the at least one end side and has at least one axially protruding separating element with the first guide element having a base bearing a against the separating element.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: June 29, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Eduard Lyschick, Fridolin Mahlmeister, Michael Menz, Norbert Wöhner
  • Publication number: 20100141084
    Abstract: A collar is to be positioned on a generator and includes an inner bore sized to be received on an outer periphery of a generator shaft. The collar has an outer periphery, which is generally hexagonal. The collar has an axially extending ledge to be received within an inner periphery of an end turn support in a generator.
    Type: Application
    Filed: December 5, 2008
    Publication date: June 10, 2010
    Inventors: Glenn C. Lemmers, JR., Jan Henry Abels
  • Patent number: 7732972
    Abstract: An electrical machine may include a plurality of stator coil ends each having a fluid passageway therein. The electrical machine may further include a plurality of rings and a plurality of axial connector assemblies for connecting the plurality of stator coil ends to the plurality of rings. Each axial connector assembly may include a header cap including an open end received on a respective stator coil end and a closed end opposite the open end, the closed end defining a coil spherical connector portion. The header cap may have a fluid port therein coupled to the fluid passageway of the respective stator coil end. A ring spherical connector portion may be carried by a respective ring, and a pair of connector members may receive therebetween the coil and ring spherical connector potions.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: June 8, 2010
    Assignee: Siemens Energy, Inc.
    Inventor: Avinash M. Tekawade
  • Patent number: 7692356
    Abstract: The invention relates to an electric machine (1) comprising a stator (21) and a rotor. The stator (21) includes at least one winding system having a plurality of coils (2) wherein start and end of the corresponding coils (21) is fixed on an end face of the stator (21) by means of a circuit support (7) and contacted in such a manner as to obtain predeterminable connections of the coils (2).
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: April 6, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Erich Bott, Michael Bzdziuch, Hubertus Bähr, Rainer Eckert, Axel Knauff, Jürgen Pawellek, Reiner Seufert, Uwe Zimmermann, Michael Zisler
  • Publication number: 20100066202
    Abstract: A method for the production of a supporting basket (1) for an end winding of a stator winding of an electrical machine includes preassembling the supporting basket (1), mounting electrically insulated round connectors (6) on the supporting basket (1), immersing the supporting basket (1) with the mounted round connectors (6) in an impregnation agent bath (12), evacuating the impregnation agent bath (12), and removing the supporting basket (1) with the mounted round connectors (6) from the impregnation agent bath (12), and drying, curing, or both, the impregnation.
    Type: Application
    Filed: November 2, 2009
    Publication date: March 18, 2010
    Inventors: Daniel Hediger, Francesco Stallone
  • Patent number: 7663287
    Abstract: A motor includes a stator and a bus bar supported axially above the stator. The bus bar includes a concave portion arranged in a lower surface thereof facing toward coils of the stator. In a gap defined between the coil and the concave portion, a portion of the wire extracted from the coil and wound in the circumferential direction (i.e., a crossover wire portion) is accommodated. The bus bar includes a wire-positioning hole through which the wire is led to a terminal to be connected with the wire.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: February 16, 2010
    Assignee: Nidec Corporation
    Inventors: Hidehiro Haga, Yoshiaki Yamashita, Nakaba Kataoka
  • Publication number: 20100019609
    Abstract: A stator for an electric machine includes multiple conductive coils. Each coil defines a loop that extends axially through the elongate core, exits the core through an end face, and reenters the core through the end face. A first subset of the coils collectively form a first radial layer axially exterior the core and a third radial layer axially exterior the core. Each coil in the first subset resides in both the first layer and the third layer. A second subset of the coils collectively forms a second radial layer axially exterior the core and a fourth radial layer axially exterior the core. Each coil in the second subset residing in both the second layer and the fourth layer.
    Type: Application
    Filed: July 1, 2009
    Publication date: January 28, 2010
    Inventors: John Stout, Daniel M. Saban, Paulo Guedes-Pinto
  • Publication number: 20100013349
    Abstract: A stator comprises a core, a plurality of wire coils, an end turn phase insulator, and at least one lead wire. The wire coils are wound through the slots of the stator and form end turns as they wind from slot to slot. The end turn phase insulator comprises an end turn separating portion and a lead wire restraining tab. The end turn separating portion is sandwiched radially between an inner end turn and an outer end turn. The lead wire restraining tab extends from the end turn separating portion and is partially wrapped over the outer end turn in a manner sandwiching the lead wire between the lead wire restraining tab and the outer end turn. This prevents the lead wire from migrating into the core of the stator.
    Type: Application
    Filed: July 21, 2008
    Publication date: January 21, 2010
    Applicant: EMERSON ELECTRIC CO.
    Inventors: Jeremy M. Breden, Vincent P. Fargo, Charles A. Peters
  • Patent number: 7649295
    Abstract: An insulation structure of rotary electrical machinery which electrically insulates teeth of a stator from a winding wound on the teeth includes: an insulator made from hard insulation material, disposed on both axial ends of the teeth, and having a side wall disposed along a side surface of the teeth crossing to a circumferential direction thereof, and a high-heat-conductive electrical-insulation resin sheet disposed along the side surface of the teeth and insulating the teeth from the winding, wherein an axial end portion of the high-heat-conductive electrical-insulation resin sheet is disposed between the side wall of the insulator and the side surface of the teeth and is stacked on the side wall in a prescribed axial extent.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: January 19, 2010
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kentaro Fukui, Akira Kabasawa
  • Patent number: 7638920
    Abstract: A brushless motor including a rotor which has ten permanent magnets each containing rare earth neodymium and provided around a rotor yoke and an outside diameter of 45 mm to 55 mm, and a stator which has a stator core having twelve slots and an outside diameter of 75 mm to 85 mm and whose magnetomotive force at maximum current is 700 AT or more. The stator core is configured such that a teeth width b is 0.14 times or more of the outside diameter of the rotor.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: December 29, 2009
    Assignee: JTEKT Corporation
    Inventors: Noboru Niguchi, Naotake Kanda
  • Patent number: 7605505
    Abstract: A rotor for use in a high speed electrical machine includes a shaft, a plurality of poles, a plurality of coils, and a rotor crossover that is relatively flexible, and that does not crack under the centrifugal forces and the mechanical and thermal cycles encountered during machine operation, startup, and shutdown. The poles extend radially outwardly from the shaft and are spaced apart from each other to form an interpole region, and the coils are wrapped around the poles. The rotor crossover is coupled between selected ones of the coils, and includes a stranded wire conductor and an insulator.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: October 20, 2009
    Assignee: Honeywell International Inc.
    Inventors: David R. Minke, David E. Stout, Simon L. Waddell
  • Patent number: 7586231
    Abstract: A stator for an electromagnetic machine includes a plurality of discrete and individually wound stator segments having end caps positioned on the segments. The end caps have legs for positioning the end cap on the segments with an interference fit. The end caps have angled surfaces to facilitate winding of wire on the segments. The end caps have male and female couplings that mate together to couple adjacent segments together. The end caps have fingers and slots for aligning the segments on substantially the same plane. The end caps have wire isolation features, including hooks, shelves and ledges, for separating the interconnect wires routed on the stator to electrically interconnect the segments. The segments include scalloped contours on their outer edges for draining oil, and the end caps have passages for draining oil.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: September 8, 2009
    Assignee: Emerson Electric Co.
    Inventors: Weirong Wang, John Scott Rose, Paul G. Michaels, Mark E. Carrier, Jason J. Jurkowski
  • Patent number: 7567008
    Abstract: A rotating electrical machine (10) has a rotor (11), which rotates about an axis (13) and is surrounded concentrically by a stator (12) having a stator winding (30) inserted into a stator body (21), the stator winding (30) including, in a concentric arrangement, a lower layer (16), which is more remote from the axis, and an upper layer (17), which is closer to the axis, of axially extending winding bars (14), which emerge from the stator body (21) at the ends of the stator (12) and are arranged, within an end winding (15), with their bar ends (23), on two concentric circles in pairs one above the other in the radial direction. With such a machine, simplified production of the stator winding (30) with, at the same time, a high dielectric strength is achieved by virtue of the fact that in those winding bars (14) of a pair which belong to different phases within a phase segregation, radial spreading (18) of the bar ends (23) is provided so as to increase the radial distance between the different phases.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: July 28, 2009
    Assignee: ALSTOM Technology Ltd.
    Inventors: Matthias Baenziger, Werner Ladstaetter, Francesco Stallone
  • Patent number: 7567009
    Abstract: A stator arrangement for an electric machine having a stator body which has a back yoke ring and a number of stator teeth that project in a radial direction from the back yoke ring, wherein at least one additional ferromagnetic stator end lamination is mounted on at least one end face of the back yoke ring, the additional ferromagnetic stator end lamination being substantially flush with the back yoke ring, wherein projections are formed at the inner or outer circumference of the additional stator end lamination, the projections projecting axially from the outer end face of the stator end lamination and forming a guide for the winding wire.
    Type: Grant
    Filed: August 16, 2006
    Date of Patent: July 28, 2009
    Assignee: Minebea Co., Ltd.
    Inventor: Chunhui Gu
  • Patent number: 7560850
    Abstract: An interphase insulating sheet is used in a stator including a core and a multiphase winding having a plurality of phase windings for insulating the phase windings from one another. The interphase insulating sheet includes a cut portion formed in the interphase insulating sheet. The cut portion indicates a direction opposite to a direction in which the interphase insulating sheet is inserted in the stator.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: July 14, 2009
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Kiyoshi Uetsuji, Hiroshi Fukasaku
  • Patent number: 7557475
    Abstract: A baffle for guiding cooling fluids in a power generator cooled by a cooling fluid and having a flange, a stator, and an end stator has an inclined surface configured to direct a first portion of the cooling fluid flow towards the flange and a second portion of the cooling fluid flow towards the end stator.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: July 7, 2009
    Assignee: General Electric Company
    Inventors: Rebinth J. Robin, Samir Armando Salamah
  • Publication number: 20090160276
    Abstract: A motor includes a rotor core and a stator core disposed about the rotor core. The stator core includes three support portions and at least one end bracket supporting the stator core solely by three mounting portions that are interconnected with a respective support portion. A method of mounting an end shield to a laminated motor stator core is also presented.
    Type: Application
    Filed: December 21, 2007
    Publication date: June 25, 2009
    Inventor: Bruce Calvin LEY
  • Patent number: 7545060
    Abstract: An electric motor includes a stator having a plurality of slots. The slots have slot ends and channels formed between the slot ends. A plurality of wire windings is disposed in the slots. A plurality of winding end-turns is formed by the wire windings and is adjacent to the slot ends. The electric motor also includes a cooling tube connected to a periphery formed by the winding end-turns. The cooling tube is operable to absorb heat from the electric motor. The cooling tube can cool the winding end-turns more efficiently than traditional electric motor water jackets and/or cooling fans.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: June 9, 2009
    Assignee: GM Global Technology Operations, Inc.
    Inventor: Terence G. Ward
  • Patent number: 7535136
    Abstract: A motor includes a protector electrically connected to the windings and positioned on the coil. A rigid bracket is sized and shaped to receive the protector. A fastening system extends over the coil, bracket and the protector and compresses the bracket against the coil. The bracket inhibits transmission of the compressive force of the fastening system to the protector and thereby shields the protector from damaging force. In another configuration, a sleeve receives the protector, and the fastening system extends only over the sleeve rather than over the protector.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: May 19, 2009
    Assignee: Emerson Electric Co.
    Inventors: Eric W. Rush, David M. Lyle, Dennis R. Howard
  • Patent number: 7525230
    Abstract: A brushless motor-generator includes a rotor having a ferromagnetic tube with radially polarized, alternating polarity permanent magnet poles, and an air core armature that magnetically exerts torque upon the rotor. The magnetic poles drive magnetic flux across a radial magnetic air gap inside of the tube and through windings of the armature that are located in the air gap. The windings utilize wire that is comprised of multiple individually insulated strands that are bundled together and sheathed in an outer electrically insulating serve that separates adjacent windings and provides a higher dielectric breakdown strength than the insulation on the individually insulated strands.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: April 28, 2009
    Assignee: Revolution Electric Motor Company
    Inventor: Christopher W. Gabrys
  • Patent number: 7501728
    Abstract: An electric machine, in particular a motor, includes a winding support assembly and a measuring system, preferably an infrared measuring system, The measuring system has at least one sensor and an evaluation unit, whereby the measuring system is integrated in the winding support assembly. The infrared sensor, which operates without making contact with the winding support assembly, provides almost instantaneously a measurement value that is proportional to the actual temperature of the winding system, thereby significantly improving motor protection. The sensor can be embedded and sealed in the winding support assembly.
    Type: Grant
    Filed: September 28, 2004
    Date of Patent: March 10, 2009
    Assignee: Siemens Aktiengesellschaft
    Inventors: Axel Knauff, Holger Schunk, Reiner Seufert
  • Publication number: 20090058221
    Abstract: A technique is provided for constructing a submersible motor. The submersible motor has a stator positioned within a housing. Windings are arranged through the stator with end coils on opposite ends of the stator. The winding end coils are supported by a support structure that prevents the end coils from collapsing inwardly.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 5, 2009
    Applicant: Schlumberger Technology Corporation
    Inventor: Joseph C. Liu
  • Patent number: 7498713
    Abstract: A stator includes: an annular stator core in which a plurality of slots opening radially inward are formed circumferentially; and a stator winding installed in the stator core. A sheet-shaped varnish supporting member is disposed so as to be placed in close contact with a radially-outermost surface of a coil end group of the stator winding around an entire circumference, and a varnish is applied to the coil end group from radially inside.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: March 3, 2009
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kyoko Higashino, Wakaki Miyaji
  • Patent number: 7479725
    Abstract: The stator for an electric machine includes a ring-shaped stator yoke, on which stator coils, formed on winding bodies and distributed uniformly around the circumference, are mounted. The coils are wired electrically together by a wiring arrangement, which has a ring-shaped carrier element designed to be attached to the stator to hold connecting conductors. The carrier element is mounted radially with respect to the winding elements. To ensure a simple and reliable mounting of the carrier element on the stator, it is proposed that the carrier element be held in place on the winding bodies by means of a latching connection so that it cannot move in the axial direction.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: January 20, 2009
    Assignee: ZF Friedrichshafen AG
    Inventors: Knut Welke, Manfred Zimmer
  • Patent number: 7476995
    Abstract: A busbar (10) has a plurality of straight portions (14) circumferentially arranged at intervals. Several such busbars (10) are tied at a plurality of circumferential spaced positions by connecting the straight positions (14) in parallel with one another. The, the busbars (10) can be positioned with high precision and will not be circumferentially displaced from each other. This can avoid the deviation of intervals between the tabs (16) and those between terminals (18) from correct ones.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: January 13, 2009
    Assignees: Sumitomo Wiring Systems, Ltd., Honda Motor Co., Ltd.
    Inventors: Takahiro Uchiyama, Izumi Suzuki, Masashi Inoue, Tatsuro Horie, Akihiro Okamura
  • Publication number: 20080296996
    Abstract: A stator for an electromagnetic machine includes a plurality of discrete and individually wound stator segments having end caps positioned on the segments. The end caps have legs for positioning the end cap on the segments with an interference fit. The end caps have angled surfaces to facilitate winding of wire on the segments. The end caps have male and female couplings that mate together to couple adjacent segments together. The end caps have fingers and slots for aligning the segments on substantially the same plane. The end caps have wire isolation features, including hooks, shelves and ledges, for separating the interconnect wires routed on the stator to electrically interconnect the segments. The segments include scalloped contours on their outer edges for draining oil, and the end caps have passages for draining oil.
    Type: Application
    Filed: August 18, 2008
    Publication date: December 4, 2008
    Applicant: Emerson Electric Co.
    Inventors: Weirong Wang, John Scott Rose, Paul G. Michaels, Mark E. Carrier, Jason J. Jurkowski
  • Publication number: 20080252170
    Abstract: A dynamoelectric machine insulator includes, a body having a plurality of holes therethrough at least some of the plurality of holes being receptive of a lead such that a lead extending through each of the plurality of holes is electrically isolated from a lead extending through each of the other of the plurality of holes, and at least one channel in the body extending arcuately along a perimetrical extent of the body. The at least one channel configured and dimensioned to insulate at least one lead routed therein.
    Type: Application
    Filed: October 15, 2007
    Publication date: October 16, 2008
    Applicant: REMY INTERNATIONAL, INC.
    Inventors: Kirk Neet, Ted Garcia, Scott Bitzer, Micheal T. York, Ryan Libler
  • Patent number: 7417342
    Abstract: The invention relates to a holder for the winding wires for stators of electric motors consisting of a component to be disposed on the stator having means for holding and guiding the winding wires that run between the individual stator windings. According to the invention, the holder is designed as a part of a circuit board for connecting the phase windings.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: August 26, 2008
    Assignee: Minebea Co., Ltd.
    Inventors: Martin Engesser, Stefan Schwamberger
  • Patent number: 7414347
    Abstract: A stator for an electromagnetic machine includes a plurality of discrete and individually wound stator segments having end caps positioned on the segments. The end caps have legs for positioning the end cap on the segments with an interference fit. The end caps have angled surfaces to facilitate winding of wire on the segments. The end caps have male and female couplings that mate together to couple adjacent segments together. The end caps have fingers and slots for aligning the segments on substantially the same plane. The end caps have wire isolation features, including hooks, shelves and ledges, for separating the interconnect wires routed on the stator to electrically interconnect the segments. The segments include scalloped contours on their outer edges for draining oil, and the end caps have passages for draining oil.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: August 19, 2008
    Assignee: Emerson Electric Co.
    Inventors: Weirong Wang, John Scott Rose, Paul G Michaels, Mark E Carrier, Jason J Jurkowski