Patents Examined by Thomas Truong
  • Patent number: 9893594
    Abstract: Provided is an armature for a rotating electrical machine, which is capable of improving heat dissipation performance of an edgewise coil to enhance efficiency of the rotating electrical machine. The armature for a rotating electrical machine includes: a core including a yoke section and a tooth section that protrudes from the yoke section; an edgewise coil to be inserted onto the tooth section through intermediation of an insulating member, the edgewise coil being formed by winding a rectangular wire having a rectangular conductor cross-section through edgewise bending; and a heat transfer member filled into a gap between the tooth section and the edgewise coil. The armature has different gaps formed at two regions between the tooth section and a long side of the edgewise coil.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: February 13, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinichiro Yoshida, Shuichi Tamura, Masaya Inoue, Akihiro Yamamura, Koichi Ojima, Shogo Okamoto, Yutaro Shirai
  • Patent number: 9893591
    Abstract: A linear motor includes a rotor rotatable relative to a surrounding rotor sleeve and about a central axis. At least one opening extends between an inner surface and an outer surface of the rotor. An externally threaded leadscrew extends through the rotor and along the central axis. An internally threaded nut is located within and mated to the rotor so as to rotate with the rotor about the central axis and ride along the leadscrew. A first cavity is located between the nut and a first bushing set against the inner surface of the rotor and a second cavity is located between nut and a second bushing set against the inner surface of the rotor. The at least one opening in the rotor forms a passage between the first and second cavities and is defined between the sleeve and nut so as to communicate excess lubricant.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: February 13, 2018
    Assignee: Stratasys, Inc.
    Inventors: Joel Farley, James Flannigan
  • Patent number: 9882460
    Abstract: The linear actuator includes an inner core (2), and an outer core (3) provided outside the inner core in a radial direction while being supported by a pair of flat springs (41 and 42). Permanent magnets (23 and 24) are formed at one of the inner core and the outer core, and magnetic pole portions (31a and 32a) are formed at the other of the inner core and the outer core to face the permanent magnet with predetermined gaps formed therebetween. Spacers (71 and 72) are respectively provided between the inner core and the flat springs, abutting portions are respectively configured by abutting facing surfaces of the spacers and the inner core and facing surfaces of the spacers and the flat springs adjacent to the spacers in the axial direction, and at least an engagement portion including a recess and a protrusion are arranged at the abutting portions.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: January 30, 2018
    Assignee: SINFONIA TECHNOLOGY CO., LTD.
    Inventors: Hiroshi Nakagawa, Takayoshi Fujii, Takashi Fukunaga, Yasuhiro Sakai, Takashi Onoue
  • Patent number: 9882455
    Abstract: An electric generator, in particular a power station generator is provided, having at least one inlet and an outlet for at least one hollow conduit for receiving a coolant fluid. The hollow conduit is situated in or on a rotor and/or a stator/stator bars and/or a shaft and/or a housing of the electric generator wherein the hollow conduit is set up as an evaporator for receiving thermal energy from the electric generator via the coolant fluid. The cooling process allows the efficiency of the electric generator to be increased.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: January 30, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Vladimir Danov, Bernd Gromoll
  • Patent number: 9882438
    Abstract: A generator includes a stator that has permanent magnets that complete a magnetic circuit across a series of gaps and through a generator coil. The rotor also includes permanent magnets that complete a magnetic circuit across a gap and through a rotor coil. When the rotor poles align with the stator poles, the stator and rotor magnetic circuits are broken, and new magnetic circuits are completed between the stator and rotor permanent magnets that cross the gap between the stator and rotor poles. A rotor coil can be used to boost the attraction/repulsion between the rotor and stator magnets. Alternating between these magnetic circuits as the prime mover rotates the rotor generates electricity.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: January 30, 2018
    Inventor: Chad Ashley Vandenberg
  • Patent number: 9876407
    Abstract: A motor includes two magnetically coupled, coaxially-nested Halbach cylinder rotors, one of which passes through a toroidal series of at least two stator coils while the other is attached to an axle or other means of transferring mechanical power. An embodiment is described comprising an additional third Halbach cylinder rotor in which a circumferential arrangement of permanent magnets is mounted rotatably and proximally outside the stator coils, coaxial with the stator coils. Adjacent stator coils are configured so as to produce opposing magnetic fields upon energizing of the motor. Alternating the current to the stator coils induces movement in the rotor. Commutation can occur brushlessly, or the motor can be configured to function without commutation by varying the frequency of the alternating current, and can be configured to operate by either DC or AC current. Alternatively, the rotor may be driven to generate an electric current in the stator.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: January 23, 2018
    Inventor: Raymond James Walsh
  • Patent number: 9871418
    Abstract: A rotor component that comprises a rotor circuit configured for use with either an interior permanent magnet (IPM) machine or a synchronous reluctance machine (SRM) that includes a pole circuit made of a conductive, non-magnetic material and has a midpoint that substantially aligns with a d-axis of the IPM or SRM. An electric machine with a similar rotor component therein or having a loop or ring of a conductive, non-magnetic material that is substantially concentric about a d-axis of the electric machine.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: January 16, 2018
    Assignee: General Electric Company
    Inventors: Kum Kang Huh, Patel Bhageerath Reddy, Ayman Mohamed Fawzi El-Refaie, Patrick Lee Jansen, Roy David Schultz, Lembit Salasoo
  • Patent number: 9866088
    Abstract: A generator and clutch assembly is disclosed for use in a vehicle and includes a rotatable input, an electric generator in a generator housing, a clutch rotor by driven by the rotatable input, and an electric clutch and brake assembly which may be integrated with the generator housing. A field coil may be mounted to an external surface of the generator housing. The generator and clutch may be offset and connected by means of a transfer system having a transfer housing, wherein a field coil is mounted to an external surface of the transfer housing.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: January 9, 2018
    Assignee: Hydro-Gear Limited Partnership
    Inventors: Raymond Hauser, Scott W. Keller
  • Patent number: 9862288
    Abstract: Electromechanical systems using magnetic fields to induce eddy currents and generate lift are described. Magnet configurations which can be employed in the systems are illustrated. The magnet configuration can be used to generate lift and/or thrust. Arrangements of hover engines, which can employ the magnet configurations, are described. Further, vehicles, which employ the hover engines and associated hover engines are described.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: January 9, 2018
    Assignee: Arx Pax Labs, Inc.
    Inventors: Robert William Melvin, D. Gregory Henderson, Shauna Moran, Victor Espinoza, Kyle O'Neil, Garrett Foshay
  • Patent number: 9850941
    Abstract: An apparatus includes a stationary sleeve and a shaft operable to rotate with respect to the stationary sleeve. A hub rotates with respect to the stationary sleeve in response to the shaft rotating. A mechanically adjustable gap forming component is attached to the stationary sleeve and radially extends between the hub and a base. The mechanically adjustable gap forming component forms a radially extending gap above the mechanically adjustable gap forming component. The mechanically adjustable gap forming component is mechanically adjustable in an axial direction with respect to the stationary sleeve. The hub dynamically adjusts the radially extending gap above the mechanically adjustable gap forming component during rotation of the hub.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: December 26, 2017
    Assignee: Seagate Technology LLC
    Inventors: Norbert Steven Parsoneault, Troy Michael Herndon, Alexander Gredinberg, Robert A. Nottingham
  • Patent number: 9843275
    Abstract: A generator includes a first member, a second member and a sliding mechanism. The first member includes a first electrode and a first dielectric layer affixed to the first electrode. The first dielectric layer includes a first material that has a first rating on a triboelectric series. The second member includes a second material that has a second rating on the triboelectric series that is different from the first rating. The second member includes a second electrode. The second member is disposed adjacent to the first dielectric layer so that the first dielectric layer is disposed between the first electrode and the second electrode. The sliding mechanism is configured to cause relative movement between the first member and the second member, thereby generating an electric potential imbalance between the first electrode and the second electrode.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: December 12, 2017
    Assignee: Georgia Tech Research Corporation
    Inventors: Zhong Lin Wang, Guang Zhu, Ya Yang, Hulin Zhang, Youfan Hu, Jin Yang, Qingshen Jing, Peng Bai
  • Patent number: 9837884
    Abstract: A linear motor includes an excitation unit including a shaft and a plurality of permanent magnets located in the shaft, and an armature including a plurality of coils surrounding the excitation unit and a magnetic cover covering the coils. The plurality of coils of the same phase group are continuously wound over a plurality of insulative bobbins. A tap conductor, a jumper wire between the coils, and a terminal wire of the coils in different phase groups that are continuously wound are separately disposed in different corner portions in the magnetic cover, and the terminal wire of each phase is connected to a circuit board.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: December 5, 2017
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Yuqi Tang, Takashi Matsushita
  • Patent number: 9837883
    Abstract: Provided is an electric motor combined with a power generator comprising: a fixed coil plate in which separate coil bodies are uniformly arranged; and a reciprocating magnet plate in which separate magnets are uniformly arranged. The installation location of the electric motor combined with a power generator is not restricted by linearly or rotationally moving equipment. In addition, the electric motor combined with a power generator enables coils and magnets to be regularly and closely arranged in the coil plate and the magnet plate, thereby minimizing loss of the locomotive force. Furthermore, when performing a reciprocating movement to which an inertial force is added, the electric motor combined with a power generator enables electric current to be instantly broken and converted and supplied by sensing of sensors, while implementing a strong reciprocating movement due to an increase of speed by means of the compression and repulsive force of a spring.
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: December 5, 2017
    Inventor: Sukho Jang
  • Patent number: 9825508
    Abstract: A linear motor device includes a track member with multiple magnets with alternating N poles and S poles arranged along the moving direction, and a moving body with a configuration which includes an armature which is movably mounted on the track member; and the device generates a driving force in the moving direction between the magnetic flux created armature and the magnets of track member. The armature also includes a heat conduction member arranged in cooling passages formed in cores of the armature. By this, coils on the moving body side are cooled efficiently, and a large driving force can be achieved by passing a large current as well as maintaining a large space for winding the coils in order to increase the winding count.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: November 21, 2017
    Assignee: FUJI MACHINE MFG. CO., LTD.
    Inventors: Makoto Kainuma, Ryo Nagata, Masatoshi Fujita, Shuhei Yamada
  • Patent number: 9819287
    Abstract: A method of imparting motion includes contracting a portion of a magnetic shape memory (MSM) element in response to a magnetic field to form an indentation on a surface of the MSM element. The method further includes retaining a protrusion from a surface of a movable part at the indentation. The method also includes moving the movable part by changing a position of the indentation in response to a change in the magnetic field.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: November 14, 2017
    Assignee: BOISE STATE UNIVERSITY
    Inventor: Peter Mullner
  • Patent number: 9819237
    Abstract: A rotor of a wind turbine large-diameter rotary electric machine has a hub configured to rotate about an axis of rotation; a tubular structure extending about the hub and supporting a plurality of active segments arranged about the axis of rotation; and a radial structure configured to connect the hub to the tubular structure, which is divided into a plurality of sectors connectable selectively to the radial structure.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: November 14, 2017
    Assignee: WINDFIN B.V.
    Inventors: Matteo Casazza, Paolo Bustreo, Mattia Scuotto
  • Patent number: 9812909
    Abstract: A method and apparatus for reducing or eliminating the effects of torque ripple and cogging torque and otherwise improving performance in an electromechanical machine such as a motor or generator. The rotor and/or stator is conceptually sectionalized and the sections spaced apart by amount sufficient to alleviate deleterious aspects of cogging torque and torque ripple. Positioning of the stator teeth or rotor magnets is determined based on the calculated spacing. Conceptual sections may be formed as physically individual segments. Unwound teeth may be disposed in end spaces between sections occupying less than the entire area of the end space.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: November 7, 2017
    Assignee: WEG Electric Corp
    Inventors: Jeffrey K. Petter, Hector Hurtado
  • Patent number: 9812914
    Abstract: A rotor according to the present invention includes a rotating axis rotating about an axial center of the rotating axis and a rotor component member including an inner circumferential surface on which an outer circumferential surface of the rotating axis fits. The outer circumferential surface of the rotating axis and the inner circumferential surface of the rotor component member include corresponding tapered surfaces each having a diameter that varies in taper along the axial center, the tapered surfaces being in full contact with each other while the outer circumferential surface of the rotating axis is press-fitted relative to the inner circumferential surface of the rotor component member, and at least one of the tapered surfaces has a corrugated surface structure storing a lubricant before the rotating axis is press-fitted relative to the rotor component member, while configured to wear away by press-fitting the rotating axis relative to the rotor component member to discharge the lubricant.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: November 7, 2017
    Assignee: FANUC CORPORATION
    Inventors: Kenji Kawai, Shinobu Takano, Yohei Arimatsu
  • Patent number: 9806591
    Abstract: A linear motor is disclosed. The linear motor includes an armature mounted for driven linear oscillation substantially along a longitudinal direction; a secondary mass mounted for linear oscillation substantially along the longitudinal direction; and a coupling unit for coupling the armature and the secondary mass. The coupling unit includes at least two coupling spring assemblies and at least a coupling element, the coupling spring assemblies being arranged in planes perpendicular to the longitudinal direction and being spaced apart from each other, and the coupling element being fixedly connected with the coupling spring assemblies.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: October 31, 2017
    Assignee: BRAUN GMBH
    Inventors: Uwe Schober, Frank Ziegler, Robert Schaefer
  • Patent number: 9806581
    Abstract: A rotor for a motor comprising a frame having a hub for connecting the rotor to a shaft and a perimeter portion for interacting with a stator of the motor to cause the rotor to rotate about an axis of rotation. The frame comprises legs extending from an outer portion of the frame towards the hub, each leg having an inner end at the hub and an outer end at the outer portion of the frame, the inner ends of a first plurality of legs being spaced from the inner ends of a second plurality of legs in a direction along the axis of rotation.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: October 31, 2017
    Assignee: FISHER & PAYKEL APPLIANCES LIMITED
    Inventors: Gregory Paul Hill, Russell Joseph Jackson