Plural Units Patents (Class 310/101)
  • Patent number: 10374498
    Abstract: An electric motor unit includes a casing, a first electric motor and a second electric motor, housed within the casing, a drive shaft operatively connected to the first electric motor and a drive shaft operatively connected to the second electric motor, in which the drive shafts can be rotatably actuated in an independent way with respect to each other around a same rotational axis.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: August 6, 2019
    Assignee: AACO MANUFACTURING S.R.L.
    Inventors: Roberta Cozza, Luicano Cozza, Marco Gattazzo
  • Patent number: 10050502
    Abstract: A double stator includes: a stator core; a bobbin wrapped on an outer circumferential surface of the stator core; and a first coil wound on one side of the stator core and a second coil wound on the other side of the stator core. The stator core includes: a lamination type core portion formed by laminating a plurality of iron pieces, on an outer surface of which a first press-fit groove is formed, and on an inner surface of which a second press-fit groove is formed; a first integration type core portion fixed to the first press-fit groove of the lamination type core portion, integrally formed by metal powders, and on which a first coil is wound; and a second integration type core portion fixed to the second press-fit groove of the lamination type core portion, integrally formed by metal powders, and on which a second coil is wound.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: August 14, 2018
    Assignee: AMOTECH CO., LTD.
    Inventors: Byung Soo Kim, Hak Rok Kim, Hyung Hwan Ko
  • Publication number: 20140225467
    Abstract: The dynamics of a magnetic gear mechanism are intended to be improved. For this purpose, a magnetic gear mechanism with a stator, a first rotor, which has permanently excited magnet poles (2, 3), and a second rotor, which likewise has permanently excited magnet poles, is proposed. The rotors are magnetically coupled to the stator. In each case one coil (5) is wound around each of the magnet poles (2, 3) of the first rotor. The coils (5) of the magnet poles (2, 3) are connected in series. The series circuit of the coils (5) can be supplied direct current in order to alter the magnetic flux through the magnet poles (2, 3) in comparison with the de-energized state.
    Type: Application
    Filed: August 31, 2011
    Publication date: August 14, 2014
    Applicant: Siemens Aktiengesellschaft
    Inventors: Dieter Munz, Markus Reinhard
  • Patent number: 8786153
    Abstract: The invention relates to a kinetic energy accumulator, comprising a plurality of rotatably mounted accumulator members (100, 198) positioned adjacent one another, an input drive mechanism (116) arranged to impart rotational drive to a first of the accumulator members, and velocity responsive coupling members (106, 192) arranged to provide for magnetic coupling of successive ones of the accumulator members when respective ones of the accumulator members are caused successively to rotate with an angular velocity equal to, or greater than, a predetermined velocity. The accumulator can store kinetic energy and thereby act as source of rotational drive.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: July 22, 2014
    Assignee: Power 4 Country Pty Limited
    Inventor: Perry John Underwood
  • Publication number: 20130134815
    Abstract: An electrical machine is provided comprising a first rotor (121), wherein the first rotor includes a support structure (163), a second rotor (131), a stator (141) and, wherein the first rotor, second rotor and stator are arranged concentrically about a shaft (50), and at least one of the second rotor and the stator is adapted to accommodate the support structure. An electrical machine is also provided comprising a shaft (50) having an axis, at least one first rotor (321), at least one second rotor (331), at least two stators (341a), (341b) and, wherein the first rotor, second rotor and stators are arranged axially along the shaft and extend from the axis.
    Type: Application
    Filed: May 17, 2011
    Publication date: May 30, 2013
    Applicant: Magnomatics Limited
    Inventors: David James Powell, Stuart David Calverley
  • Publication number: 20130099615
    Abstract: A magnetic continuously variable-range transmission exemplifying a continuously variable magnetic torque transmission system using a magnetically patterned cone and magnetically engaged drive gears that are positionable parallel to the cone's surface using actuators. The actuators are responsive to a controller. By changing the position of the magnetic drive gears, the effective gear ratio changes smoothly between the maximum and minimum gear ratios for the particular embodiment. The magnetic drive gears are mechanically coupled to planetary gears that drive a sun gear which drives the output shaft. The cone may be patterned with magnets in such a way as to create a constant-torque transmission. The magnets in the pattern are placed, printed, or impressed, in a non-magnetic matrix.
    Type: Application
    Filed: October 24, 2012
    Publication date: April 25, 2013
    Inventor: Lynwood A. Stewart
  • Patent number: 8222792
    Abstract: A generator or motor apparatus having a stator formed of a plurality of pairs of parallel stator segments is provided The pairs of parallel segments are connected together to form a channel in which an annular rotor moves The annular rotor also comprises a plurality of detachable segments connected together to form an annular tram operable to move through said channel Each stator segment comprises a stator winding set and each rotor segment comprises a magnet dimensioned to fit between the parallel spaced apart stator segments The apparatus may include a support structure, the rotor segments being slidably coupled to the support structure and the stator segments being attached to the support structure The apparatus may be a rim generator, wind turbine generator or other electrical machine The stator winding set includes a stator winding, and may include other electrical or electronic components, including possibly a power factor capacitor, direct current filtering capacitor, supercapacitor, and one or more di
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: July 17, 2012
    Assignee: Clean Current Limited Partnership
    Inventors: Mihai C. Platon, Virgil F. Young
  • Patent number: 8028398
    Abstract: A method of making a wound field for a brushless direct current motor, direct current generator, alternating current motor or alternating current generator, includes providing a base mold and a press mold. Next, a number of phases is determined. At least one strand of conductive material per phase is formed between the base mold and press mold into a conductive coil that has a shape that indicates the number of poles required. Each conductive coil is inserted into the stator core, and the stator core is installed into one of a brushless direct current motor, direct current generator, alternating current motor or alternating current generator.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: October 4, 2011
    Assignee: Yeadon Energy Systems, Inc.
    Inventor: William H. Yeadon
  • Patent number: 7999426
    Abstract: The present disclosure provides a motor overload protection device that includes a driving gear, a loading wheel, and at least one protecting gear unit rotatably fixed to the loading wheel. The loading wheel defines a central through hole for rotatably receiving a rotor of a motor. The driving gear is fixed on the rotor. The at least one protecting gear unit is rotated by the rotor. A resistance between the at least one protecting gear unit and the loading wheel is predetermined. When the load on the loading wheel is less than or equal to the maximum load of the motor, the resistance keeps the loading wheel and the at least one protecting gear unit together rotating around the rotor of the motor. When the load is greater than the maximum load of the motor, the at least one protecting gear unit rotates relative to the loading wheel.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: August 16, 2011
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Xiao-Guang Su
  • Patent number: 7906877
    Abstract: The present invention provides a linear motor device that can reduce a variation in thrust caused by a variation in attractive force. The linear motor device includes a linear motor 1 and a control section 30 that controls the linear motor 1. The linear motor 1 includes a magnet member 2 composed of permanent magnets having respective N poles and S poles alternately arranged in an axial direction, and a coil member 3 which is located orthogonally to the axial direction with respect to the magnet member 2 and through which the magnet member 2 is movable in the axial direction relative to the coil member 3. The control section 30 controls current conducted through the coil member 3 so that a moving one of the magnet member 2 and the coil member 3 reciprocates within a use range L corresponding to a part of a pitch p between the magnetic poles N and S in the magnet member 2.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: March 15, 2011
    Assignees: Murata Machinery Ltd., GMC Hillstone Co., Ltd.
    Inventors: Takuya Okada, Noritaka Ishiyama
  • Patent number: 7898121
    Abstract: A linear actuator includes permanent magnet annuli arranged about an armature core for axial movement in a tubular stator upon energization of coils arranged in concentric association with the armature. The stator has portions extending radially inwards of the coils and towards one another beneath each coil, which define a spacing between the coil and the armature. The annuli have a substantially radially magnetized structure and the coils are configured for single phase power input. In one embodiment (FIG. 6), two pairs of spaced annuli are arranged on the core, wherein the axial length of the outermost annuli is half the axial length of the inner annuli.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: March 1, 2011
    Assignee: Ricardo UK Ltd
    Inventors: Keith Ramsay, Andrew Turner, Richard E. Clark
  • Patent number: 7812490
    Abstract: An electric motor with two independent output shafts connected to the rotor by coupling means working in one sense of rotation only, e.g. by means of freewheel clutches. The first freewheel works in one sense of rotation while the second freewheel works in the opposite sense. Two operating devices can be powered by the motor, simply by switching the sense of rotation; an example of use is a combined pump-compressor machine. Various embodiments are disclosed, some of them obtainable as a simple and low-cost modification of an existing motor or motor-pump assembly.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: October 12, 2010
    Inventor: Marino Pedrazzini Bertolazzi
  • Patent number: 7810225
    Abstract: A method of making a wound field for a brushless direct current motor, direct current generator, alternating current motor or alternating current generator, includes steps of providing a base mold and a press mold. Another step comprises determining a number of phases. At least one strand of conductive material per phase is formed between the base mold and press mold into a conductive coil that has a shape that indicates the number of poles required. Each conductive coil is inserted into the stator core, and the stator core is installed into one of a brushless direct current motor, direct current generator, alternating current motor or alternating current generator.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: October 12, 2010
    Assignee: Yeadon Energy Systems, Inc.
    Inventor: William H. Yeadon
  • Patent number: 7800276
    Abstract: Devices and methods are provided for a rotor assembly and an electric motor. One embodiment for a rotor assembly includes a first rotor including a first interface surface and a second rotor including a second interface surface corresponding to the first interface surface. Also, the first rotor is positioned with the first interface surface in direct physical contact with the second interface surface of the second rotor.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: September 21, 2010
    Assignee: Kurz-Kasch, Inc.
    Inventor: Stephen H. Purvines
  • Patent number: 7768159
    Abstract: The present invention provides a linear motor 1 that can prevent a magnet member 2 from falling down when a power supply is turned off. A linear motor 1 includes a magnet member 2 composed of permanent magnets having alternately arranged respective N poles and S poles and a coil member 3 which surrounds a periphery of the magnet member 2 and trough which the magnet member 2 is movable in an axial direction relative to the coil member 3. A magnetic substance 3 is provided in the vicinity of one end of the coil member 3 to allow the magnet member 2 to exert a magnetic attractive force.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: August 3, 2010
    Assignees: Murata Machinery, Ltd., GMC Hillstone Co., Ltd.
    Inventors: Takuya Okada, Noritaka Ishiyama
  • Patent number: 7472468
    Abstract: A method of making a wound field for a brushless direct current motor, direct current generator, alternating current motor or alternating current generator, includes providing a base mold having an engagement face with at least one movable end turn form. A number of distinct phases is determined and at least one strand of conductive material is wound around at least one movable end turn forming tool per distinct phase. One conductive coil is created from each strand of conductive material for each distinct phase. Each conductive coil is formed into a configuration that indicates the number of poles required. Each conductive coil is then placed onto an insertion instrument. The insertion instrument and each conductive coil are inserted into a stator core. The insertion instrument is removed from the stator core, and the stator core is installed into one of the aforementioned motors or generators.
    Type: Grant
    Filed: April 3, 2007
    Date of Patent: January 6, 2009
    Assignee: Yeadon Energy Systems, Inc.
    Inventor: William H. Yeadon
  • Patent number: 6956312
    Abstract: A brushless DC motor including a stator having plural slots; and a rotor which has plural permanent magnets and is divided into three rotor blocks in a rotation axis direction, the three rotor blocks being layered so that the arrangement angles of the rotor blocks differ from each other by an amount of a mechanical angle in a rotary direction that is equivalent to one third of a pulsation period of cogging torque generated by the rotor and stator. A brushless DC motor including a rotor having plural magnetic poles provided at an equal pitch in a circumferential direction by mounting permanent magnets in magnet mounting holes; and a stator having plural slots arranged at an equal pitch in a circumferential direction.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: October 18, 2005
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Hirohide Inayama, Hideki Jonokuchi, Sadaaki Mori, Atsushi Ishihara, Tomofumi Takahashi, Minoru Kitabayashi, Tetsuo Horie
  • Patent number: 6570275
    Abstract: A motor having two degrees of free motion includes: a motor casing; a combined core of cylindrical shape having a plurality of inner teeth inside and a plurality of outer teeth outside and fixedly coupled inside the motor casing; a first coil winding wound on the inner teeth of the combined core; a second coil winding coil wound on the outer teeth of the combined core; a rotating armature having a permanent magnet inside inserted inside the combined core and rotated by an interaction of a magnetic flux formed by the first coil winding and the permanent magnet; a linear armature located at one side of the second coil winding undergoing a linear movement by the flux formed by the second coil winding; a driving shaft penetratingly coupled to the rotating armature and to the linear armature and undergoing rotating and linear movements therewith; and a spring urging the linear armature away from the combined core.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: May 27, 2003
    Assignee: LG Electronics Inc.
    Inventors: Tae Heoung Kim, Jin Soo Park
  • Patent number: 6411001
    Abstract: The present invention encompasses an angled magnetic drive that includes a motor for generating rotary motion about a first axis. This angled magnetic drive also includes a driving member coupled to the motor and rotated by it. The driving member includes a plurality of magnets coupled to one of its faces. This magnetic drive additionally includes a driven member that is mounted to rotate about a second axis, which is oriented at an angle to the first axis. At least part of a face of the driven member is located in proximity to the face of the driving member such that the driven member is magnetically coupled to the driving member when the motor rotates the driving member thereby causing the driving member to rotate, the rotation of the driving member producing rotation of the driven member.
    Type: Grant
    Filed: October 9, 2000
    Date of Patent: June 25, 2002
    Assignee: Lockheed Martin Corporation
    Inventors: J. Kirston Henderson, Boyd B. Bushman
  • Patent number: 6208053
    Abstract: A hysteresis slip clutch having an adjustable stall torque is provided. The clutch components include first and second rotors, with a housing at least partially enclosing the rotors. An annular permanent magnet is rigidly mounted on the first rotor and an annular hysteresis sleeve is rigidly mounted to the second rotor. The first and second rotors are mounted within the housing such that the magnet and hysteresis sleeve are concentrically located and axially aligned with one another within the housing. In this orientation, magnetic flux from the magnet penetrates the hysteresis sleeve and magnetic hysteresis developed within the hysteresis sleeve acts to oppose relative angular motion between the first and second rotors. The magnetic hysteresis establishes a torque by which angular motion of the first rotor is transferred to the second. A annular magnetic shunt is adjustably mounted to the housing.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: March 27, 2001
    Assignee: MPC Products Corporation
    Inventor: Craig Scott
  • Patent number: 6002193
    Abstract: The present invention includes a basic module for a discoidal machine. The module includes at least one stator subassembly and a rotor subassembly. A housing member is connected to the stator subassembly. The stator subassembly and the rotor subassembly are coaxially arranged. A discoidal machine for such modules is also disclosed.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: December 14, 1999
    Assignee: Jeumont Industrie
    Inventors: Jean-Marc Canini, Raymond Michaux, Yves Milet
  • Patent number: 5977671
    Abstract: An fan motor assembly for driving a fan of a gas boiler. The motor assembly has a core having a hollow portion at a center thereof, a coil assembly for magnetizing the core by applying an electric current to the core, a rotor rotatably disposed in the hollow portion of the core and having a rotating shaft including a first shaft which extends towards a fan so as to be coupled with the fan and a second shaft which extends opposite to the first shaft, a first cover attached to a front surface of the core and having a first bearing therein for rotatably supporting the first shaft of the rotating shaft, and a second cover attached to a rear surface of the core and formed at an inner portion thereof with a first recess for installing a second bearing for rotatably supporting the second shaft of the rotating shaft and a second recess for installing a printed circuit board on which a sensor for detecting revolutions per minute of the rotor is mounted.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: November 2, 1999
    Assignee: Daewoo Electronics Co., Ltd.
    Inventor: Sung-Kee Kim
  • Patent number: 5936321
    Abstract: A position of a second permanent magnet with respect to a first permanent magnet is defined by assembling a driving side support member, a thrust bearing, a spacing member, a radial bearing, and a driven side support member. The first and second permanent magnets are respectively held on the driving side support member and the driven side support member. Accordingly, variation of a magnetic gap between the first and second permanent magnets can be reduced. Variations in assembling the parts hardly affect the variation of the magnetic gap.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: August 10, 1999
    Assignee: Denso Corporation
    Inventors: Teruhiko Kameoka, Kazutoshi Kuwayama, Hikaru Sugi
  • Patent number: 5909075
    Abstract: A crankshaft-mounted, multiple-speed electromagnetic clutch for driving multiple rotary devices of an engine, the engine having a crankshaft, the clutch comprising: a clutch support plate mounted to the crankshaft; a spring connected to the clutch support plate; a pair of clutch plates connected to the spring with the spring biasing the pair of clutch plates toward the clutch support plate; a pair of rotors rotating about the crankshaft on bearings; an electromagnet fixedly engaging each of the rotors and adapted to attract one of the clutch plates against the rotor, thereby transferring the rotational force of the crankshaft to the rotor; and a transmission device connecting each of the rotors to the rotary device.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: June 1, 1999
    Inventor: Charles L. Heimark