Patents Examined by Michael Andrews
  • Patent number: 11005316
    Abstract: An electrical drive device includes a stator and a rotor. The stator has a main body and windings of an electromagnetic coil. The main body has clearances, and the windings are at least partially arranged in the clearances. The stator has two coolant inlets and a coolant collecting device with a coolant outlet. The coolant inlets are in fluidic connection with the coolant outlet by way of the clearances.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: May 11, 2021
    Inventors: Stefan Oechslen, Wolfgang Merath
  • Patent number: 11002355
    Abstract: An actuator includes a motor including a first rotor rotatable in a circumferential direction about a center axis extending in a vertical direction, a second rotor including a sensor magnet and rotatable in the circumferential direction about the center axis, and a speed reducer that reduces rotation of the first rotor and transmits a torque to the second rotor. The motor includes a stationary portion including a stator facing the first rotor and a first bearing rotatably supporting the first rotor with respect to the stationary portion. The stationary portion includes a sensor which faces a portion of a trajectory of the sensor magnet rotating in the circumferential direction and detects a rotation position of the sensor magnet.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: May 11, 2021
    Assignee: Nidec Corporation
    Inventors: Wataru Yamauchi, Shozo Osugi, Akihiro Toda, Teiichi Hirono
  • Patent number: 10998788
    Abstract: An electric machine a stator having a stator core and windings positioned thereon. The stator core has a plurality of slots formed therein and a winding positioned in the plurality of slots. The winding includes at least four parallel paths distributed in slot sets of the stator core. Each slot set includes at least four contiguous slots including two left slots and two right slots. A first parallel path and a second parallel path are arranged in the two left slots for at least a first revolution of the winding around the core. The first parallel path and the second parallel path are arranged in the two right slots for at least a subsequent revolution of the winding around the core.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: May 4, 2021
    Assignee: BorgWarner, Inc.
    Inventors: Kirk Neet, Tausif Husain
  • Patent number: 10998790
    Abstract: An electric generator including: a main generator, including a rotating portion having main field windings; a stationary portion having generator armature windings; and a woven insulator at least partially enclosing the main field windings of the rotating portion, the woven insulator being included of strips or fibers of a material woven together, wherein the woven insulator is permeable to a coolant in a liquid form.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: May 4, 2021
    Inventor: Kris H. Campbell
  • Patent number: 10998783
    Abstract: The present disclosure may reduce cogging torque by stacking steel plates which can form a stage skew by stacking the steel plates without reversing the front and back sides or by forming the stage skew by stacking the steel plates capable of easily distinguishing the front and back sides, and reduce both the sixth-order and twelfth-order dq coordinates of harmonic components, thereby achieving low toque ripple, high efficiency, and improved controllability.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: May 4, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Katsuhisa Mukai
  • Patent number: 10992213
    Abstract: A compressor includes: a stator core including a plurality of teeth around which an aluminum winding wire is wound in a concentrated manner; a rotor core disposed on an inner diameter side of the stator core and including a plurality of magnet insertion holes; and a plurality of ferrite magnets inserted in the magnet insertion holes, in which when a width of a winding wire portion formed in each of the teeth is represented as A, a length in an axis direction of the stator core is represented as L, and the number of slots is represented as S, the stator core has a shape that satisfies a relation of 0.3<S×A÷L<2.2.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: April 27, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventor: Kazuchika Tsuchida
  • Patent number: 10992192
    Abstract: A stator core or a rotor core for an electrical machine, the core including a plurality of teeth separated by slots in a circumferential direction of the core, and a plurality of lamination stacks arranged one after another in an axial direction of the core, and separated from each other in the axial direction by cooling ducts. Each lamination stack includes at its each end in the axial direction at least one slit tooth section providing a discontinuity in the electrical conductivity of the lamination material and thereby reducing eddy current losses at the respective slit tooth section, and between the slit tooth sections at least one regular tooth section.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: April 27, 2021
    Assignee: ABB Schweiz AG
    Inventors: Konstantina Bitsi, Reza Rajabi Moghaddam, Stefan Toader
  • Patent number: 10971976
    Abstract: A position detecting purpose permanent magnet 51 constituting a position detection sensor is installed at an opposite side to an output side of a rotational shaft 45 of a rotor housed within a motor housing 11A. A GMR element 56 which constitutes the position detection sensor and a position detection circuit thereof are installed on a side of a motor cover 48 on which a position detection purpose permanent magnet 51 is arranged. GMR element 56 is arranged on a position opposed against the position detection purpose permanent magnet. Thus, since the GMR element and the position detection purpose permanent magnet is installed, a mutually positioning assembly (attachment) accuracy can be improved. In addition, since the electric power conversion circuit and both of the GMR element and its position detection circuit are kept away, such an effect that an accurate detection signal can be obtained can be achieved.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: April 6, 2021
    Inventor: Katsumasa Hagiwara
  • Patent number: 10971960
    Abstract: A cuff support attached to an axial end surface of a stator core including an annular yoke, a plurality of teeth, and a plurality of slots formed between the teeth includes: an annular plate making contact with the yoke; a plurality of ribs projecting toward an inner peripheral side of the annular plate so as to correspond to the teeth; and a plurality of spaces formed between the ribs so as to correspond to the slots. The cuff support is made of an elastic member. The ribs are being apart from the axial end surface of the stator core from roots of the ribs toward tip ends of the ribs. When a coil is wound around the teeth and the ribs so as to pass through the slots and the spaces, the ribs are brought into pressure contact with the coil due to an elastic force.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: April 6, 2021
    Inventors: Hiroshi Hoshina, Shotaro Okamoto
  • Patent number: 10971962
    Abstract: A stator of an electronically-commutated DC motor, with a stator core, an insulating cap, a stator winding, and a winding interconnection, wherein the winding interconnection consists of several sheet-metal elements and several insulating elements which are arranged between the sheet-metal elements. The aim of the invention is to provide a simple design for a generic stator consisting of easy-to-manufacture and easily-shaped components, wherein production tolerances can be compensated for in a simple manner. A further aim consists of being able to use reliable and proven production processes which are also as easy as possible to monitor.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: April 6, 2021
    Inventors: Heinz Günther, Reiner Hettych, Martin Gundermann
  • Patent number: 10965267
    Abstract: The present disclosure describes micromechanical resonator, a resonator element for the resonator, and a method for trimming the resonator. The resonator comprises a resonator element having a length, a width, and a thickness, where the length and the width define a plane of the resonator element. The resonator element comprises at least two regions (52, 53) in the plane of the resonator element, wherein the at least two regions have different thicknesses.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: March 30, 2021
    Inventors: Antti Jaakkola, Tuomas Pensala, Aarne Oja, Panu Pekko, James R Dekker
  • Patent number: 10954999
    Abstract: An integrated journal bearing (IJB) includes a shaft extending in an axial direction, a housing through which the shaft extends in the axial direction, the housing surrounding the shaft in a radial direction, an active magnetic bearing (AMB) arranged within the housing and surrounding the shaft in the radial direction, and at least a first fluid film journal bearing (JB) arranged within the housing and surrounding the shaft in the radial direction. The first JB is axially adjacent to the AMB such that first JB and the AMB do not share a common radial clearance, while both are commonly flooded with oil. A controller in signal communication with the AMB can be variously configured to supply current thereto to operate the AMB by controlling a magnetic force generated thereby.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: March 23, 2021
    Inventor: Aly El-Shafei
  • Patent number: 10951093
    Abstract: A rotary electric machine includes a rotor that rotates integrally with a rotary shaft and a stator disposed outside the rotor in a radial direction. In the stator, a coil is wound on a stator core, and a coil end of the coil exposed to an outside from an end portion of the stator core is cooled by a liquid coolant. The rotary electric machine further includes a coil end cover formed of an insulating material and configured to cover at least an outer circumference of an upper region of the coil end. A liquid coolant passage through which a liquid coolant flows toward a coil end is provided in the coil end cover.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: March 16, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Norifumi Yasuda
  • Patent number: 10951150
    Abstract: A system comprises a stator magnetically coupled to a rotor and a plurality of conductor assemblies distributed evenly along a perimeter of the device, wherein each conductor assembly is evenly distributed into at least two branches of conductors, and wherein each branch comprising a plurality of conductors, all the branches form a plurality of windings, wherein a winding comprises a positive segment and a negative segment, and wherein each segment has a plurality of branches, and wherein one segment is in more than two conductor assemblies and the plurality of windings is symmetrically divided into a plurality of groups, wherein each group of windings forms a balanced multi-phase system and is connected to a connection bar, and wherein at least two connection bars are isolated from each other.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: March 16, 2021
    Assignee: Quanten Technologies, Inc.
    Inventors: Hengchun Mao, Xuezhong Jia
  • Patent number: 10927892
    Abstract: A magnetic bearing (20) comprises: a rotor (22) to be supported for rotation about an axis (502); a stator (24) extending from a first end (30) to a second end (32) and comprising: one or more first permanent magnets (110); one or more second permanent magnets (112) of polarity substantially opposite to a polarity of the one or more first permanent magnets; a first axial winding (34); a second axial winding (36); a first end pole (120); and a second end pole (122).
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: February 23, 2021
    Assignee: Carrier Corporation
    Inventors: Jagadeesh Tangudu, Parag M. Kshirsagar
  • Patent number: 10923969
    Abstract: Systems, methods and motor-generators with preform windings and a molded core are described. The preform windings include a first end, a second end, and a plurality of in-slot portions extending from the first end to the second end. The molded core includes a plurality of slots. Each of the plurality of slots including a respective in-slot portion disposed therein. Each of the plurality of slots includes a wall conforming to an outer profile of the respective in-slot portion.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: February 16, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: Alireza Fatemi, Anthony M. Coppola, Thomas W. Nehl, David J. Brooks
  • Patent number: 10910897
    Abstract: A water-cooled generator strip having at least two conductor stacks which are arranged parallel and in each case have a plurality of conductors arranged one above the other and electrically insulated from one another by a conductor insulation, wherein the conductors are secured geometrically relative to one another by a cured resin, and wherein between the conductor stacks a gap space is provided, in which at least one cooling channel is arranged for conveying cooling water.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: February 2, 2021
    Inventors: Andrey Mashkin, Mario Brockschmidt, Ralf Merte, Friedhelm Pohlmann, Christoph Lehmann, Bobby A. Warren
  • Patent number: 10910900
    Abstract: A coil (3) for a rotary electric machine (3) is constituted by eight layers, and includes an inner coil member (10B) constituting one layer, three layers, five layers, and seven layers, and an outer coil member (10A) constituting two layers, four layers, six layers, and eight layers. An outer upper right arm bending part (31), an outer upper left arm bending part (32), an outer lower right arm bending part (33), and an outer lower left arm bending part (34) of the outer coil member (10A) are formed, at a position where some portions are not overlaid on each other, when six inner coil members (10B) constituting seven layers are arranged to be overlaid on six outer coil members (10A) constituting eight layers.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: February 2, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Keiichiro Oka
  • Patent number: 10910901
    Abstract: A wound stator for a dynamo-electric machine comprising a stator stack having a unitary cylindrical yoke and a plurality of circumferentially spaced, radially inward extending stator teeth defining stator slots therebetween. A winding is formed by a strand of wire forming turns around each stator tooth, each winding including a first lead end extending from a stator slot on a first side of a respective stator tooth and a second lead end extending from a stator slot on a second side of the respective stator tooth. An insulation system is provided including an insulating structure septum extending through each stator slot between windings located on two adjacent stator teeth, the turns of each winding located between a respective stator tooth and a first surface of the insulating structure septum engaged with the winding.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: February 2, 2021
    Assignee: Globe Motors, Inc.
    Inventors: Jerry C. Burch, James W. Moran, Allen Abel
  • Patent number: 10897176
    Abstract: Certain embodiments provide systems and methods for cooling a drive end bearing. The system may include an alternator including a drive end bearing, a drive end fan and a front housing face. The drive end fan may include a shaft aperture and auxiliary air flow inlet apertures positioned circumferentially around the shaft aperture. The front housing face may include auxiliary fins coupled to the drive end bearing. The auxiliary fins may protrude from the front housing face. The auxiliary fins may be arrayed axially on the front housing face. In various embodiments, the drive end fan is rotated to draw air through the auxiliary air flow inlet apertures and adjacent to at least a portion of auxiliary fins of the front housing face. The at least a portion of the auxiliary fins transfers heat from the drive end bearing to the air.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: January 19, 2021
    Inventors: Robert D. Hall, Michael J. Hanchett, Andrew Cawse