Plural Rotary Elements Patents (Class 310/114)
  • Patent number: 10700580
    Abstract: An axial flux electrical machine comprises a first flux generating assembly, a second flux generating assembly, a shaft and a speed controller. The shaft has an axis of rotation. Each of the first flux generating assembly and the second flux generating assembly is rotationally located on the shaft in axial juxtaposition to one another, with the first flux generating assembly being axially separated from the second flux generating assembly by a separation distance. The speed controller is configured to modify a magnetic field generated by either of the first flux generating assembly and the second flux generating assembly so as to control a rotational speed of the electrical machine.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: June 30, 2020
    Assignee: ROLLS -ROYCE PLC
    Inventor: Chloe Jo Palmer
  • Patent number: 10673297
    Abstract: Electric motors and machines including such electric motors, the electric motors having improved impact resistance. Features of the electric motors minimize axial shifting of the motor shaft and other components of the electric motor, and/or minimize damage to components caused by such axial shifting occasioned by an impact force on the motor.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: June 2, 2020
    Assignee: McMillan Electric Company
    Inventors: Douglas deHaas McMillan, Ronald James Boltik, Vincent Hall, Dewain Wasson
  • Patent number: 10666098
    Abstract: In one embodiment, a magnet array and ironless winding for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators forming poles on the reinforcing side of the array, and such that a magnetic moment at the poles is oriented generally perpendicular to the reinforcing side of the array, the winding being adjacent to the array and comprising conductor bundles having a generally rectangular cross-section arranged such that a long side of the generally rectangular cross-section is transverse to a direction of magnetic field lines at the poles.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: May 26, 2020
    Assignee: AeroVironment, Inc.
    Inventors: Bart Dean Hibbs, Bang Xuan Phan
  • Patent number: 10663020
    Abstract: Torque generating devices, systems, and/or related methods are disclosed. In one aspect, a torque generating device (100) may include a housing (102), at least one top and one bottom pole (108), at least one side pole (110), at least two rotors (116) for rotating within the housing, a shaft (104) supported by bearings (111), at least a first stator (120) disposed between portions of the at least two rotors (116), magnetically responsive (MR) material disposed within the housing (102) and at least partially surrounding the first stator (120) and the at least two rotors (116), and a coil (112) for generating a magnetic field, wherein an amount of torque generated by the torque generating device (100) increases in proportion to an amount of electrical current supplied to the coil (112). In another aspect, a method of generating torque may include providing a torque generating device (100) and rotating the at least two rotors (116).
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: May 26, 2020
    Assignee: Lord Corporation
    Inventors: Michael Jarzomski, Luca Di Deco
  • Patent number: 10630156
    Abstract: An axial flux rotary generator comprising: two magnetic annuli; a coil annulus; the magnetic annuli and coil annulus having a common axis; the two magnetic annuli defining a plurality of magnetic fields around the common axis extending across a gap between the two magnetic annuli and the coil annulus having a sequence of coils attached around the common axis in the gap such that lines of magnetic flux from the magnetic fields cut the turns of the coils and thus induce electric current in the coils as the magnetic annuli are caused to rotate relative to the coil annulus; wherein a relative positioning of individual magnetic fields and a relative positioning of centers and sizing of individual coils in the sequence of coils is such that (i) the electric currents in the individual coils of the sequence of coils are in excess of three phases relative to one another, and (ii) the number of common factors other than one between the number of coils in the sequence of coils and the number of individual magnetic field
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: April 21, 2020
    Assignee: TIME TO ACT LIMITED
    Inventor: Hugh-Peter Granville Kelly
  • Patent number: 10608490
    Abstract: A double-rotor single stator axial flux machine, which is supplied having no bearings between the rotors and stator internal of the machine, is mounted to an external structure such as an interface of an engine of a vehicle or a portion of the transmission of a vehicle. The machine is mounted to the structure via the shaft of the machine (on which are seated bearings located in the structure) and the stator housing. The bearings of the structure, which are external to the machine, permit the rotors to rotate relative to the stator when the machine is installed on the structure.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: March 31, 2020
    Assignee: YASA LIMITED
    Inventors: Tim Woolmer, Christopher Thomas McCaw, Andrew Court
  • Patent number: 10587175
    Abstract: A double-stator rotating electric machine includes a rotor, an outer stator disposed radially outside the rotor with an outer gap formed therebetween, and an inner stator disposed radially inside the rotor with an inner gap formed therebetween. The outer stator has an outer multi-phase coil wound thereon, and the inner stator has an inner multi-phase coil wound thereon. Moreover, the inner gap formed between the inner stator and the rotor is set to be larger than the outer gap formed between the outer stator and the rotor.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: March 10, 2020
    Assignee: DENSO CORPORATION
    Inventors: Takeo Maekawa, Shin Kusase, Keiji Kondou
  • Patent number: 10581358
    Abstract: An electric machine includes a stator, a rotor, and magnets. The stator includes multiple flux members having ferrous material. The rotor is configured to rotate relative to the stator and spaced from the stator by an air gap. The magnets are rigidly mounted to the flux members of the stator. At least a first magnet and a second magnet of the magnets includes an elongated axis parallel to a radius of the rotor and a minor axis perpendicular to the elongated axis, and a first pole of the first magnet having a first polarity and positioned along the minor axis to face a first pole of the second magnet having the first polarity.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: March 3, 2020
    Assignee: Kohler Co.
    Inventors: Isaac S. Frampton, Adam Larson
  • Patent number: 10566866
    Abstract: A rotor for an axial flux permanent magnet machine is described. The machine has a stator comprising a stator housing enclosing a set of coils wound on stator bars or teeth and disposed circumferentially at intervals about an axis on the machine, and a rotor bearing a set of permanent magnets and mounted for rotation about the said axis. The rotor and stator are spaced apart along said axis to define a gap therebetween in which magnet flux in the machine is generally in an axial direction. The magnets are disposed circumferentially around said rotor and define a plurality, n, of matching sets of magnets. Each set of magnets includes a plurality of magnets, wherein said n sets of magnets on said rotor have n-fold rotational symmetry. Within a said set, the magnets have different shapes and/or relative circumferential spacings of adjacent magnets within the set of magnets are irregular.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: February 18, 2020
    Assignee: Yasa Motors Limited
    Inventor: Tim Woolmer
  • Patent number: 10510459
    Abstract: Insulated winding wire articles and associated formation methods are described. An insulated winding wire article may include a conductor and optional base insulation formed around the conductor. The conductor may be formed into a predefined shape having at least one bend, such as a U-shaped bend. A coating comprising parylene may be formed around the conductor and any base insulation.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: December 17, 2019
    Assignee: Essex Group, Inc.
    Inventors: Allan R. Knerr, David Marshall Cain
  • Patent number: 10457389
    Abstract: The present disclosure provides various embodiments of a multicopter-assisted launch and retrieval system generally including: (1) a multi-rotor modular multicopter attachable to (and detachable from) a fixed-wing aircraft to facilitate launch of the fixed-wing aircraft into wing-borne flight; (2) a storage and launch system usable to store the modular multicopter and to facilitate launch of the fixed-wing aircraft into wing-borne flight; and (3) an anchor system usable (along with the multicopter and a flexible capture member) to retrieve the fixed-wing aircraft from wing-borne flight.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: October 29, 2019
    Assignee: Hood Technology Corporation
    Inventors: Andreas H. von Flotow, Corydon C. Roeseler, Daniel Pepin Reiss
  • Patent number: 10461614
    Abstract: A rotor for an electrical machine is provided, comprising a main rotor (2), which can be rotated about a longitudinal axis (3) and which is free of permanent magnets, and having an auxiliary rotor (5), which comprises at least one axial flux rotor (6), which can also be rotated about the longitudinal axis (3) and is arranged in axial direction adjacent to the main rotor (2), in which the axial flux rotor (6) comprises permanent magnets (8). Furthermore, an electrical machine with the rotor (2, 5) and a stator (1) is provided.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: October 29, 2019
    Assignee: FEAAM GmbH
    Inventor: Gurakuq Dajaku
  • Patent number: 10447124
    Abstract: Pairs of unidirectionally magnetic rotor/stator assemblies are mounted for synchronous rotation and complementary, so that one creates pulsating positive current flow and the other creates pulsating negative current flow, as the rotor and stator in each assembly are rotated with respect to each other. The pulsating positive current flow and pulsating negative current flow are combined at a desired phase angle to create alternating current, without power loss due to reversal of current flow.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: October 15, 2019
    Assignee: Pacific International Energy Solutions Inc.
    Inventor: Sunny Ouray Stevens
  • Patent number: 10439452
    Abstract: Disclosed are various embodiments for a new and improved electrical motor/generator, specifically a motor/generator comprising: a plurality of coils radially positioned about a coil assembly, a plurality of magnetic tunnels forming a relative rotational path for the coil assembly, wherein the all of plurality of magnets forming each magnetic tunnel have like poles facing inward toward the interior of the magnetic tunnel or facing outward away from the interior of the magnetic tunnel such that each magnetic field of any magnetic tunnel is of an opposite polarity to the magnetic field of an adjacent magnetic tunnel.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: October 8, 2019
    Assignee: LINEAR LABS, LLC
    Inventor: Fred E. Hunstable
  • Patent number: 10431364
    Abstract: A device such a coil where each components of the electrical structures are completely encapsulated by a magnetic material in a manner that all the magnetic field generated makes a closed loop through a core, amplified and oriented in wished direction. The coil using this manufacturing method is destined to stators, rotors for axial, radial rotating or linear electric motors, transformers and all devices that generate a magnetic field (non-exhaustive list).
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: October 1, 2019
    Assignee: C&C TECHNOLOGIES, LLC
    Inventor: Petre Serban Stefanescu
  • Patent number: 10407178
    Abstract: A propulsion system assembly is provided including a driveshaft and a plurality of electric motor modules. The driveshaft is rotatably mounted to a casing about a drive axis, the driveshaft including a first shaft end and an opposite facing second shaft end. The plurality of electric motor modules are in axially stacked relationship with one another with respect to the drive axis to define an electric motor module stack, each electric motor module being configured for transmitting a torque to the driveshaft when coupled thereto independently of at least one other electric motor module. Each electric motor module includes a controllable clutch arrangement for selectively coupling and decoupling the respective electric motor module with respect to the driveshaft to respectively enable and disable transmission of torque between the respective electric motor module and the driveshaft.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: September 10, 2019
    Assignee: ISRAEL AEROSPACE INDUSTRIES LTD.
    Inventor: Eyal Regev
  • Patent number: 10404146
    Abstract: A rotary electric machine includes: a stator including a stator core and a stator coil wound around the stator core; and an annular outer rotor including an outer core disposed around an outer periphery of the stator and a plurality of outer magnets arranged at intervals in a circumferential direction, in which the stator core has an annular yoke and a plurality of outer teeth protruding radially outward from an outer periphery of the yoke, the outer magnets are magnetized in the circumferential direction such that magnetization directions of the outer magnets adjacent to each other in the circumferential direction are opposite to each other in the circumferential direction, and a circumferential distance of a gap between the outer magnets adjacent to each other is 1.5 times or more a disposition pitch in the circumferential direction of the outer teeth.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: September 3, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Hattori, Shinji Wakamatsu, Shinya Urata
  • Patent number: 10396612
    Abstract: In a permanent magnet type concentrated winding motor, the number of magnetic poles is M, a stator Sr has an N number of teeth T around which coils are concentratedly wound and which are circumferentially arranged at equal intervals, M is equal to (18±4)n and N is equal to 18n, an armature winding AW has an m number of parallel circuits, and a 1-phase circuit of the parallel circuits is configured to have a 6n/m number of coils connected in series with each other.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: August 27, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masatsugu Nakano, Satoru Akutsu, Yoshihito Asao, Yuji Takizawa, Yu Hirotani, Ryuichi Takiguchi
  • Patent number: 10381890
    Abstract: An axial gap type dynamo-electric machine (1) comprises: a stator (2) provided with a magnetic core (21) and an exciting coil (22); a rotor (3) provided with a plurality of permanent magnets (4) circumferentially arranged around a rotation center axis (AX), the rotor (3) being also provided with a disk-shaped base material (31) for supporting the permanent magnets, the rotor (3) being disposed at an axial distance from the stator (2); and affixation members (5) for affixing the permanent magnets (4) to the base material (31). The permanent magnets (4) are provided with front surfaces facing the stator (2), rear surfaces facing the base material, and engagement-receiving sections (412, 422, 432) formed at peripheral edges of the permanent magnets (4). The affixation members (5) include: engagement sections (512) engaging the engagement-receiving sections; and affixation sections (511) forming mechanical affixation structures relative to the base material.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: August 13, 2019
    Assignee: Kobe Steel, Ltd.
    Inventors: Koji Inoue, Takashi Hiekata, Hiroaki Kawai, Shintaro Sasai, Tetsuya Ogawa, Toshiro Yamashita, Shingo Kasai, Shumpei Hayashi
  • Patent number: 10374499
    Abstract: The present invention provides a power generator which can obtain efficient power generation by changing magnetic force acting on electromotive coils. The power generator is provided with a first permanent magnet member 1, a second permanent magnet member 2, and an electromotive coil member 3 arranged concentrically to have a telescoping structure and is configured so that power generation in the electromotive coil member 3 is induced by rotating the first permanent magnet member 1 or/and the second permanent magnet member 2. In the power generator, the first and second permanent magnet members 1 and 2 cooperate with each other to change the magnetic force and, thus, to obtain efficient power generation.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: August 6, 2019
    Assignee: T. K LEVERAGE CO., LTD.
    Inventor: Takaitsu Kobayashi
  • Patent number: 10340777
    Abstract: A downhole electric submersible pump, with at least one pump unit having a pump inlet, and an electric motor system to power the pump, the electric motor system comprising an induction motor and permanent magnet motor. The induction motor and permanent magnet motor share a common power supply, connected in series.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: July 2, 2019
    Assignee: COREteQ Systems Ltd.
    Inventors: Philip Head, Hassan Mansir
  • Patent number: 10330542
    Abstract: A torque sensor assembly for use in a vehicle power steering system has magnets, coaxial first, second, and third flux closure members around the magnets, and first and second magnetic sensors. Each of the plurality of magnets emits a magnetic field. The second flux closure member is between the first and third flux closure members. The first and third flux closure members collect the magnetic fields having a first polarity. The second flux closure member collects the magnetic fields having a second polarity that is opposite the first polarity. The first and second magnetic sensors are positioned to have like polarity. The first sensor is between the first and second flux closure members. The second sensor is between the second and third flux closure members. A torque signal is calculated by subtracting a second signal generated by the second sensor from a first signal generated by the first sensor.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: June 25, 2019
    Assignee: TRW Automotive U.S. LLC
    Inventor: Robert Pearce
  • Patent number: 10320270
    Abstract: A hybrid dual-rotor motor structure is provided, which may include a stator, a first rotor, a second rotor, a first coil, and a second coil. The stator may include a plurality of stator teeth. The first rotor, the second rotor, and the stator may arranged in the radial direction of the hybrid dual-rotor motor structure. The first coil may be wound on the stator teeth. The second coil may be wound on the stator teeth; the second coil may include a plurality of sub-coil sets; each of the sub-coil sets may include a plurality of sub-coils connected to each other/one another in series or in parallel; the pole-pair number of the second coil may be the integral multiple of the pole-pair number of the first coil.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: June 11, 2019
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Ming-Tsan Peng, Shian-Hsuan Huang
  • Patent number: 10312782
    Abstract: A double stator permanent magnet machine includes an inner stator having a back iron and a set of inner stator poles connected to the back iron, a rotor having a shaft and a set of segments, each segment having a permanent magnet, adjacent the inner stator and rotatively coupled to the inner stator, an outer stator having a set outer stator poles, adjacent the rotor and rotatively coupled to the rotor, a set of inner windings disposed between each of the inner stator poles, and a set of outer windings disposed between each of the outer stator poles.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: June 4, 2019
    Assignee: The Board of Regents, The University of Texas System
    Inventors: Babak Fahimi, Wei Wang
  • Patent number: 10295376
    Abstract: A multi-turn non-contact sensor includes a rotationally mounted driver magnet, and a rotationally mounted driven magnet. The driver magnet has a first number (P1) of magnetic poles and is configured to selectively receive a rotational drive torque and, upon receipt of the drive torque, to rotate about a first rotational axis. The driven magnet is spaced apart from, and is coupled to receive a magnetic force from, the driver magnet. The driven magnet has a second number (P2) of magnetic poles and is responsive to rotation of the driver magnet to rotate about a second rotational axis that is parallel to the first rotational axis. The driven magnet rotates one complete revolution each time the driver magnet rotates a predetermined number (N) of complete revolutions, P2>P1, and N=(P2/P1).
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: May 21, 2019
    Assignee: Honeywell International Inc.
    Inventor: Kumaran Sena Narasimhan
  • Patent number: 10284029
    Abstract: Disclosed are various embodiments for an improved generator/motor and a method of generating current, the method comprising providing a circular rotation path, generating a concentrated magnetic field around a portion of the circular rotation path; rotating a coil along the circular path and through the concentrated magnetic field; generating current within the coil as a result of the rotating, and extracting the current from the coil.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: May 7, 2019
    Assignee: LINEAR LABS, LLC
    Inventor: Fred E. Hunstable
  • Patent number: 10270323
    Abstract: A low resistance generator includes a series of stator plates and rotors. Stator plates include the coils wrapped around coil spools. The stator plates and coil spools are made from non-conductive and non-ferromagnetic material. The coils are exposed to the surrounding air and cooled convectively by airflow caused by a rotation of the rotors in the gaps. Rotors house magnets and are disposed within gaps between the stator plates. The rotors are also made of non-conductive and non-ferromagnetic materials. The magnets may be disposed on the rotors to form columns. Two columns of magnets are joined together to form one or more closed magnetic loops, each column being joined by a gauss bridge disposed at first and second end rotors.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: April 23, 2019
    Inventor: Daniel Farley
  • Patent number: 10270305
    Abstract: A motor-generator includes a stator disposed along a centerline including a stator pole, a first stator winding and a second stator winding, wherein the first stator winding is wound on the stator pole and the second stator winding is wound on the stator pole, and at least one rotor axially disposed from the stator along the centerline.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: April 23, 2019
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Jacek F. Gieras, Gregory I. Rozman
  • Patent number: 10254133
    Abstract: An excitation winding is wound around each tooth of a detecting stator core. First output winding and second output winding are wound around mutually different teeth while avoiding winding of the output windings with the same phase around two teeth adjacent to each other in a circumferential direction. When the number of pole pairs of the excitation winding is M that is an integer equal to or greater than 1 and the number of salient poles of a detecting rotor is N that is an integer equal to or greater than 1, a spatial distribution of the number of turns in each of the first and second output winding is obtained by a function represented by a sine wave of a spatial order |M±N|. An error spatial order ? represented by |M?|M±N? and an error spatial order ? represented by |??M| are values other than 1 and 2.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: April 9, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ryuichi Takiguchi, Morishige Minobe, Satoru Nakada, Shuhei Niikura, Naohiro Motoishi, Yusuke Morita, Takanori Komatsu
  • Patent number: 10243437
    Abstract: A permanent magnet rotor and a permanent magnet rotary assembly are provided. The permanent magnet rotor includes a rotor core, a plurality of permanent magnets and a non-magnetic retaining ring. The rotor core is magnetically permeable. The rotor core has an outer surface and a plurality of dovetail grooves on the outer surface. The permanent magnets are respectively disposed in the plurality of dovetail grooves. The non-magnetic retaining ring is inserted over the rotor core. The plurality of permanent magnets are surrounded by the non-magnetic retaining ring. The non-magnetic retaining ring is magnetically impermeable.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: March 26, 2019
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Kun-Yi Liang, Tse-Liang Hsiao, Chien-Chang Wang
  • Patent number: 10205372
    Abstract: Disclosed in the present invention is a shaft construction for motor-generators and alternators that provides effective airflow and improved overall cooling without the need for an external fan. The shaft comprises a plurality of circumferentially disposed centrifugal fan blades and longitudinal cooling channels. As the shaft rotates, the centrifugal fan blades pull the air inwardly across the winding end-turns on one end of the stator into the housing and propels the air at high pressure through the cooling channels along the shaft to cool the rotor inner circumferential surfaces, winding end-turns on the other end of the stator and bearings mounting surfaces, and exhausts through the exhaust vents on the ends of the housing. The airflow path provides effective cooling of the stator windings, rotor, shaft and bearings that prevents high temperature gradients, thus resulting in improved motor-generator performance.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: February 12, 2019
    Assignee: ALTIGREEN PROPULSION LABS PRIVATE LIMITED
    Inventors: John Bangura, Lasse Moklegaard, Amitabh Saran
  • Patent number: 10199892
    Abstract: The present invention relates to a spoke-type permanent magnet rotor (1) used in brushless direct current electric motors (12), forming the rotating part inside the stator (13) that forms the stationary part thereof and having an air gap (14) between the inner surface of the stator (13) and itself, comprising a cylindrical core (2) produced from ferromagnetic laminations or ferromagnetic powder metal, a shaft (3) fixed to the core (2) and forming the rotational axis of the rotor (1), a hub (5) disposed at the center of the core (2) and having a shaft hole (4) that bears the shaft (3), more than one pole segment (6) disposed all around the hub (5), more than one magnet slot (7) disposed between the pole segments (6), more than one magnet (8) tangentially magnetized, placed in the magnet slots (7) and extending outwards in the radial direction, and two end rings (9) produced from non-magnetic materials such as aluminum and plastic and fixed on the front and rear planar surfaces of the core (2) by the injection
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: February 5, 2019
    Assignee: ARCELIK ANONIM SIRKETI
    Inventors: Cihad Ekin, Emin Gultekin Sonmez, Yakup Imat, Hakan Dogan
  • Patent number: 10170959
    Abstract: A motor having an axis of rotation is provided. The motor includes a housing, a first shaft coupled to the housing and a second shaft coupled to the first shaft. The motor further includes a stator coupled to the housing and comprising an outer circumferential surface and an inner circumferential surface, wherein the inner circumferential surface defines a stator bore around the axis of rotation. A gearbox is coupled to the first shaft and to the second shaft and positioned within the stator bore. The motor includes a rotor coupled to the first shaft and adjacent the stator.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: January 1, 2019
    Assignee: Regal Beloit America, Inc.
    Inventors: Larry Gene Anderson, Wesley Kenneth Anderson, Charles Richard Langford
  • Patent number: 10166684
    Abstract: An industrial robot including a manipulator for movement of an object in space. The manipulator includes a movable platform arranged for carrying the object, a first arm arranged for influencing the platform in a first direction and including a first inner arm part rotatable about a first axis, a second arm arranged for influencing the platform in a second direction and including a second inner arm part rotatable about a second axis, a third arm arranged for influencing the platform in a third direction and including a third inner arm part rotatable about a third axis.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: January 1, 2019
    Assignee: ABB Research Ltd.
    Inventors: Torgny Brogardh, Mats Isaksson
  • Patent number: 10164510
    Abstract: A low resistance generator includes a series of stator plates and rotors. Stator plates include the coils wrapped around coil spools. The stator plates and coil spools are made from non-conductive and non-ferromagnetic material. The coils are exposed to the surrounding air and cooled convectively by airflow caused by a rotation of the rotors in the gaps. Rotors house magnets and are disposed within gaps between the stator plates. The rotors are also made of non-conductive and non-ferromagnetic materials. The magnets may be disposed on the rotors to form columns. Two columns of magnets are joined together to form one or more closed magnetic loops, each column being joined by a gauss bridge disposed at first and second end rotors.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: December 25, 2018
    Inventor: Daniel Farley
  • Patent number: 10135307
    Abstract: An end of each of slits of a rotor on a magnet insertion hole side has a triangular shape. A slit inner-side line of each of the slits includes an apex and a pair of side ends. An interval between each of the pair of side ends and the magnet insertion hole is larger than an interval between the apex and the magnet insertion hole, and an interval between the apex and the magnet insertion hole is larger than a plate thickness of each of steel plates forming a rotor core.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: November 20, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazuchika Tsuchida, Tomoaki Oikawa, Masahiro Nigo, Naohiro Oketani
  • Patent number: 10128734
    Abstract: Disclosed in the present invention is a shaft construction for motor-generators and alternators that provides effective airflow and improved overall cooling without the need for an external fan. The shaft comprises a plurality of circumferentially disposed centrifugal fan blades and longitudinal cooling channels. As the shaft rotates, the centrifugal fan blades pull the air inwardly across the winding end-turns on one end of the stator into the housing and propels the air at high pressure through the cooling channels along the shaft to cool the rotor inner circumferential surfaces, winding end-turns on the other end of the stator and bearings mounting surfaces, and exhausts through the exhaust vents on the ends of the housing. The airflow path provides effective cooling of the stator windings, rotor, shaft and bearings that prevents high temperature gradients, thus resulting in improved motor-generator performance.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: November 13, 2018
    Assignee: ALTIGREEN PROPULSION LABS PRIVATE LIMITED
    Inventors: John Bangura, Lasse Moklegaard, Amitabh Saran
  • Patent number: 10071811
    Abstract: A gas turbine engine includes a compressor section and a turbine section together defining a core air flowpath. Additionally, a rotary component is rotatable with at least a portion of the compressor section and at least a portion of the turbine section. An electric machine is mounted coaxially with the rotary component and positioned at least partially inward of the core air flowpath along a radial direction of the gas turbine engine. An electric communication bus is electrically connected to the electric machine and extends through the core air flowpath to, e.g., electrically connect the electric machine to one or more systems of the gas turbine engine or a propulsion system including the gas turbine engine.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: September 11, 2018
    Assignee: General Electric Company
    Inventors: Thomas Kupiszewski, Brandon Wayne Miller, Randy M. Vondrell, Paul Robert Gemin
  • Patent number: 10075030
    Abstract: An electric machine comprise a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles, the second carrier being arranged to move relative to the first carrier. An airgap is provided between the first carrier and the second carrier. The electromagnetic elements of the first carrier include posts, with slots between the posts, one or more electric conductors in each slot, the posts of the first carrier having a post height in mm. The first carrier and the second carrier together define a size of the electric machine. The magnetic poles having a pole pitch in mm. The size of the motor, pole pitch and post height are selected to fall within a region in a space defined by size, pole pitch and post height that provides a benefit in terms of force or torque per weight per excitation level.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: September 11, 2018
    Assignee: GENESIS ROBOTICS & MOTION TECHNOLOGIES CANADA, ULC
    Inventor: James Brent Klassen
  • Patent number: 10050503
    Abstract: A magnetless rotating electric machine has an outer stator, an inner stator, and an annular rotor interposed between the outer stator and the inner stator. A plurality of outer-inner salient pole pairs are provided in the annular rotor along a circumferential direction of an annular rotor yoke. A rotor yoke coil is wound around one side of the rotor yoke and around another side of the rotor yoke along the circumferential direction with the respective outer-inner salient pole pairs sandwiched therebetween. Rectifying elements make a magnetic pole polarity of the outer salient poles and magnetic pole polarity of the inner salient poles, which are magnetized by an induced current of the rotor yoke coil caused by magnetization of the outer stator and the inner stator, identical with each other, and also make magnetic pole polarities of the adjacent outer-inner salient pole pairs opposite each other.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: August 14, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Eiji Yamada
  • Patent number: 10033314
    Abstract: A generator is provided having a first array of magnets and a second array of magnets. The first array is typically disposed in a first elongated Halbach configuration and the second array of magnets is disposed in a second configuration. The first and second arrays are configured to manipulate a net flux field to form a figure eight flux field between the first and second arrays. At least one coil disposed between the first and second arrays, such that relative movement of the first and second arrays with respect to the first coil generates an electric current.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: July 24, 2018
    Assignee: MAGNELAN TECHNOLOGIES INC.
    Inventor: Rudolph Oelofse
  • Patent number: 9966823
    Abstract: A synchronous electric motor with permanent magnets (1, 11). The synchronous electric motor includes a wound stator (11) having axially extending stator teeth (13) formed in a frame (10), and a rotor (1) having a plurality of permanent magnets (3) extending axially in first recesses (4) of a cylinder head (2). A dimensional ratio of a first outer diameter (D1) of the rotor (1) to a second outer diameter (D2) of the stator (11) is pre-determined so that the motor provides optimum efficiency. The dimensional ratio is pre-determined in such a way that the stator losses by Joule effect are reduced to a minimum. The synchronous electric motor is employed in electric compressors for motor vehicles.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: May 8, 2018
    Assignee: Valeo Equipments Electriques Moteur
    Inventors: Lilya Bouarroudj, Jean-Claude Matt
  • Patent number: 9954416
    Abstract: An actuator, a stator, a motor, a rotational-to-linear motion conversion mechanism, and a linear actuator are provided. The motor, the actuator, and the linear actuator at least include a screw shaft and a nut. The screw shaft is a rod-like member, and at least a part of the surface of the screw shaft has a thread. The nut is screwed onto the thread on the screw shaft, and moves the screw shaft in a linear motion direction that is a direction in parallel with a rotational center. The stator, the motor, the actuator, and the linear actuator can at least convert a rotational motion into a linear motion.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: April 24, 2018
    Assignee: NSK LTD.
    Inventors: Takashi Kataoka, Yusuke Ota, Toshifumi Taguchi, Hayao Watanabe
  • Patent number: 9923420
    Abstract: A motor includes a stator and a rotor. The stator includes an inner circumference stator section and an outer circumference stator section. The inner circumference stator section and the outer circumference stator section each include two stator cores and a coil. The two stator cores each include claw poles and are coupled to each other. The coil is arranged between the two stator cores. The rotor includes an inner circumference magnet and an outer circumference magnet. The inner circumference magnet, which is arranged at an inner circumferential side of the inner circumference stator section, opposes the claw poles in the radial direction. The outer circumference magnet, which is arranged at an outer circumferential side of the outer circumference stator section, opposes the claw poles in the radial direction. The inner circumference stator section and the inner circumference magnet form an inner circumference motor unit.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: March 20, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Yoshiaki Takemoto, Shigemasa Kato, Masashi Matsuda
  • Patent number: 9906082
    Abstract: A component that includes a longitudinal axle, having a multiple keybars that extend outward from a surface of the axle, such that each of the keybars are disposed axially along and circumferentially around the axle. Also the axis of the keybars is parallel to the axle, such that a profile of all midpoints of the keybars is helicoidal around the axle, also the helicoidal profile is such that they make up one or more helicoidal paths. The profile may be herringbone skewed. The component may be part of a rotor assembly that is part of an electric machine such as an interior permanent magnet (IPM) or Synchronous Reluctance motor.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: February 27, 2018
    Assignee: General Electric Company
    Inventors: Francesco Papini, Alexander Felix Fiseni, Mohamed Osama, Manoj Ramprasad Shah
  • Patent number: 9893578
    Abstract: Systems and methods for constructing electric motors in which rotor sections are individually keyed to a rotor shaft such that, in a resting position, the rotor sections are circumferentially shifted (“clocked”) with respect to each to mitigate effects of harmonic feedback, torsional flexibility and the like. In one embodiment, a system includes an electric drive, and an ESP coupled to it by a power cable. The ESP motor has a rotor in which multiple permanent-magnet rotor sections are mounted to a shaft. Within each rotor section, permanent magnets are positioned in two or more axially aligned rows. Adjacent rotor sections are clocked with respect to each other so that, in operation, the rows of permanent magnets in the different rotor sections are positioned to counter the harmonic feedback or to use torsional deflection to equalize torque contributions from the different rotor sections.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: February 13, 2018
    Assignee: Baker Hughes Incorporated
    Inventors: James C. Clingman, Chad A. Craig
  • Patent number: 9871421
    Abstract: A split-core type motor makes work for connecting lead wires of split coils simple and efficient and reduces manufacturing costs and time taken to connect wires is realized. The split-core type motor includes a plurality of split coils formed by winding coils on split cores on which insulating members have been mounted; a stator formed by disposing the plurality of split coils in an annular shape; crimp terminals that connect lead wires of the split coils by being crimped so that the lead wires of the split coils correspond to a u phase, a v phase, and a w phase of a three-phase AC power source, and form terminals corresponding to the u phase, the v phase, and the w phase, respectively; and a resin mold part that covers the coils and the lead wires while power line connecting portions of the crimp terminals are exposed to the outside.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: January 16, 2018
    Assignee: SANYO DENKI CO., LTD.
    Inventors: Tooru Takeda, Shintarou Koichi, Kenta Matsuhashi
  • Patent number: 9866150
    Abstract: A magneto-caloric power generation equipment comprising at least one magneto-caloric power generation unit; the magneto-caloric power generation unit comprises two supports provided in a correspondingly connected manner; a rotor, a stator and a heating and cooling device; the supports are provided with an axle seat A, the rotor is provided with an axle seat B, an accommodating space is provided between the two supports, and the rotor is provided in the accommodating space; the rotor comprises an annular support, wherein both sides of the annular support are provided with an even number groups of hard magnet fixing grooves; the hard magnet fixing grooves of two sides of the annular support are provided in a staggered manner, and an annular accommodating groove is formed in the even groups of hard magnet fixing grooves on the same side of the annular support.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: January 9, 2018
    Assignee: Guangdong Magnetic Electronic Co., Ltd.
    Inventors: Tian an Zhao, Kewen Long, Tianbao Yan
  • Patent number: 9834085
    Abstract: An energy efficient vehicle and a disc-type dynamic motor thereof are disclosed. The vehicle comprises front wheels and rear wheels, and a gasoline engine is assembled in the vehicle for driving a generator producing power. The power is transported to a capacitor battery via a circuit control system and then to disc-type dynamic motors, which are assembled with the rear wheels, from the capacitor battery via two power lines respectively, whereby the disc-type dynamic motors directly to driving the vehicle travelling at high-speed and high torque via the wheels. Accordingly, the energy efficient vehicle does not include transmission devices, such as the clutch, the transmission, the power transmission shaft, and the differential. The power produced by the generator is directly provided to the disc-type dynamic motors to drive is the vehicle travelling and is enough to drive the disc-type dynamic motors, so the vehicle does not need to stop for charging.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: December 5, 2017
    Inventor: Richard Chi-Hsueh
  • Patent number: 9825563
    Abstract: Apparatus features a microcontroller configured to: receive signaling containing information about a measured change of a magnetic field created by a magnetic circuit driving a motor; and determine corresponding signaling containing information about the speed of rotation of the motor, based upon the signaling received. The microcontroller provides control signaling containing information to control the operation of the motor, including where the motor control is used to control the flow of fluids from a pump. A Hall Effect Sensor is used to sense the magnetic flux and provide the signaling in the form of a feedback signal for implementing motor control. The motor housing has a slot, the Hall Effect sensor is mounted external the motor housing over the slot, and a ferromagnetic bridge is arranged over the Hall Effect sensor to close the magnetic circuit and cause more flux to go through the Hall Effect sensor.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: November 21, 2017
    Assignee: Flow Control LLC
    Inventors: Jesus Estrada, Akshaykumar Patel