Patents Examined by Thomas Truong
  • Patent number: 9979246
    Abstract: An electric motor (100) features a external stator (28), an internal rotor (150) rotatably mounted within the external stator, the rotor having a lamination stack (200, 200?, 200?) composed of a plurality of rotor plates (201, 201?, 201?) in which are formed at least one first recess (614) and at least one second recess (630), a rotor magnet (224) being located in each first recess (614), the second recess (630) being associated with a jamming element (40) mounted therein. A clamping member (692,694) is arranged between the first recess (614) and the second recess (630). The clamping member and the second recess (630) are shaped so as to enable support of the jamming element (40) on the lamination stack, and to permit application of a force (F) on the clamping member in the direction of the rotor magnet. The second recess (630) serves as a through-opening for receiving a shaft (40), and the shaft (40) serves as the jamming element (40).
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: May 22, 2018
    Assignee: EMB-PAPST ST. GEORGEN GmbH & CO. KG.
    Inventor: Sergej Helbling
  • Patent number: 9976333
    Abstract: The invention relates to an adjusting drive (1) comprising an electric motor (2), an output shaft (3), a printed circuit board (4), a housing (6) and a connection interface (5), wherein the electric motor (2) is contacted with the printed circuit board (4) and is designed to drive the output shaft (3), wherein the housing (6) accommodates the printed circuit board (4), wherein the connection interface (5) comprises a direct plug connection with contacting pads (9) directly on the printed circuit board (4), and wherein the contacting pads (9) are designed for direct contact with a connector (7), wherein the connection interface (5) comprises a housing opening (8) in the housing (6) as access for the connector to the contacting pads (9), and wherein the printed circuit board (4) is dimensioned to be narrower than the housing opening (8) such that the printed circuit board (4) can be inserted through the housing opening (8) into the housing (6).
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: May 22, 2018
    Assignee: Robert Bosch GmbH
    Inventor: Thomas Huck
  • Patent number: 9973856
    Abstract: An ultrathin electromagnetic vibrating device and its manufacturing method, wherein the ultrathin electromagnetic vibrating device includes: a base frame, a vibrating reed, a set of surrounds, a voice coil and a magnetic circuit system, wherein the surrounds include an upper surround and a lower surround, respectively connected with an upper surface and a lower surface of the vibrating reed to fixedly connecting the vibrating reed with a base of the base frame. Due to an application of the lower surround to form a combined action of the upper and lower surround, the vibrating reed is only able to keep vibrating up and down vertically, a first end of the voice coil is fixedly provided on the lower surface of the vibrating reed, similarly, while a stroke of the voice coil drives the vibrating reed to vibrate up and down vertically, the voice coil achieves an up-and-down vertical stroke.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: May 15, 2018
    Inventor: Xinmin Huang
  • Patent number: 9966817
    Abstract: An improved electromechanical transducer is provided. In an embodiment, the transducer comprises at least two flux modules, each defining a magnetic circuit having a gap; an armature configured to move along a longitudinal axis passing through the gaps; and a gas containment structure laterally surrounding the armature, wherein: the at least two flux modules are provided outside the gas containment structure; and the armature comprises a reinforcing portion laterally outside of the gaps that is wider in a direction parallel to the flux in the gaps than at least one of the gaps.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: May 8, 2018
    Assignee: Oxford University Innovation Limited
    Inventor: Michael William Dadd
  • Patent number: 9960653
    Abstract: The present disclosure provides a driving device including a stator, a rotor, a housing, a controller, and a sealing member. The sealing member includes a base and protrusions. The protrusion includes a cylindrical portion, a cover portion, a first annular protrusion, and a second annular protrusion. The first and second annular protrusions outwardly protrude from the cylindrical portion. The first annular protrusion is fit in a fit region of the lead hole in a compressed state. The second annular protrusion is offset from the fit region toward the controller.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: May 1, 2018
    Inventors: Shun Takeuchi, Koji Isogai
  • Patent number: 9941775
    Abstract: An assembly includes multiple adjoined rotor sections each having multiple poles and multiple void rows therethrough that are radially distributed in each of the poles. The rotor sections are skewed in a circumferential direction. The assembly also has multiple conductive rings that substantially surround one of the void rows. A method of assembly and electric machines and vehicles using the assembly are also disclosed. Aspects reduce torque ripple in electric machines and allow for encoderless/sensorless operation in an electric machine using the rotor assembly. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: April 10, 2018
    Inventors: Alexander Felix Fiseni, Kum-Kang Huh, Mohamed Osama, Francesco Papini
  • Patent number: 9941763
    Abstract: A magnetic flux offset system selectively modifies the magnetic force at effective poles of a magnetic flux element. Magnetic flux from each effective pole is enhanced and/or effectively nullified using a control coil. The control coil directs magnetic flux from a magnetic flux donor to nullify magnetic flux from a flux donor at one effective pole. Magnetic flux from the control coil could also add to the magnetic flux from a flux donor at another effective pole. Reversing the current to the control coil could switch the effective pole where the magnetic flux is nullified and the effective pole where the magnetic flux is enhanced.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: April 10, 2018
    Inventor: Chad Ashley Vandenberg
  • Patent number: 9935534
    Abstract: An electric machine includes an outer stator having a plurality of windings, an inner stator having a plurality of permanent magnets and arranged within the outer stator in concentric relationship to the outer stator, and a rotor arranged between the outer stator and the inner stator in concentric relationship to the outer and inner stators and movable relative to the outer and inner stators. The rotor includes a mounting element which is made from a non-magnetic material and has a plurality of recesses, with a magnetically soft segment being arranged in each of the recesses. A first cooling device cools the permanent magnets of the inner stator.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 3, 2018
    Inventor: Rolf Vollmer
  • Patent number: 9935508
    Abstract: The aim is to provide an individual-segment rotor, the construction of which requires low production expenditure. For this purpose, an individual-segment rotor having an axis of rotation and a plurality of laminated core segments (5) arranged around the axis of rotation is provided. Each laminated core segment (5) is radially fastened to a separate flexural support (11). All flexural supports (11) are radially retained by at least one fastening ring (14).
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: April 3, 2018
    Inventors: Helmut Schneider, Armin Stäblein, Benjamin Volkmuth, Jörg Müller
  • Patent number: 9929621
    Abstract: A spring mechanism for an electromagnetic drive unit converts or translates the movement and/or actuation of the electromagnet into a desired movement of the workpiece and enables simple and efficient tuning of the workpiece movement. The spring mechanism includes a housing, a spring connected to the housing, wherein at least two sections of the spring are movable with respect to the housing, a drive shaft that includes a first end having a magnet and a second end for attachment to a workpiece, and at least two tuning elements connecting the drive shaft to the movable portion of the spring. At least one of the tuning elements is adjustable. In one embodiment, the spring may be a flat spring, and the movable sections may each be positioned between a pair of cutouts defined in the spring.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: March 27, 2018
    Assignee: Ranir, LLC
    Inventors: Bryan J. Dishon, Kevin J Kollar
  • Patent number: 9929631
    Abstract: An interior magnet linear induction motor includes an armature and a line of inductor teeth. The armature includes coils arranged between a plurality of teeth, and the line of inductor teeth is arranged so as to face the armature and includes a plurality of tooth portions arranged at a constant pitch in a linear stroke direction. An end portion of each of the plurality of teeth has a shape such that magnetoresistance of the tooth increases toward the root side. At least one permanent magnet is arranged at an end portion of each of the plurality of teeth and adjacent permanent magnets that are arranged at different teeth are magnetized such that opposite magnetic poles face each other.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: March 27, 2018
    Assignee: SANYO DENKI CO., LTD.
    Inventors: Satoshi Sugita, Yuqi Tang, Yasushi Misawa, Shigenori Miyairi
  • Patent number: 9929627
    Abstract: A brushless DC motor is provided. The brushless DC motor comprises a motor housing around an axis, a stator assembly inside the motor housing, a carrier plate fixed relative to the stator assembly, and a Hall effect sensor assembly removably coupled to the carrier plate. A method of making a brushless DC motor is also provided comprising fixing a carrier plate relative to a stator assembly of a brushless DC motor assembly, and fixing a first Hall effect sensor array to the carrier plate.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: March 27, 2018
    Assignee: Goodrich Corporation
    Inventors: Harald Klode, David Drennen, Kevin Rehfus, Albert Keith Pant, Robert French
  • Patent number: 9927003
    Abstract: An actuator includes a motor driving a worm, a gearbox, and a motor control module. The gearbox includes a gearbox housing, a worm wheel for meshing with the worm, an output mechanism fixed to the worm wheel. The gearbox housing defines worm chamber and worm wheel chamber. The motor control module includes a control module housing, a printed circuit board and a connector of the printed circuit board. The control module housing defines a control module chamber and the connector is mounted at an open end of the control module chamber. The control module housing is connected with the gearbox housing. The control module chamber and the worm wheel chamber are located on opposite sides of the worm chamber. An isolation slot is defined between the control module chamber and the worm chamber.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: March 27, 2018
    Assignee: Johnson Electric S.A.
    Inventors: Fa Yun Qi, Guo Dong Ren, Gang Hua Yu, Rui Feng Qin, Xiang Guo Shi
  • Patent number: 9923421
    Abstract: A rotor structure for a motor includes: a core body in which a shaft passes through an axial center and teeth are radially arranged along an outer circumference and include first slide connection portions at front ends; field windings individually wound around outer circumferences of the teeth and maintaining a state of being spaced apart from one another while being wound around the teeth; and a cylindrical core tip part configured to surround the outside of the core body, the cylindrical core tip part including second slide connection portions in an inner circumference such that the front ends of the teeth are slidably connected thereto along an axial direction through a mating engagement.
    Type: Grant
    Filed: May 9, 2015
    Date of Patent: March 20, 2018
    Inventor: Jong Hyun Kim
  • Patent number: 9912206
    Abstract: An electrical motor including a stator, said stator comprising a back iron, a plurality of teeth extending therefrom, and windings wound around said teeth; a rotary body comprising permanent magnets positioned between said stator and said rotary body; said rotary body being coaxially rotatable relative to the stator about a central axis; means for rotating said rotary body about said central axis of rotation relative to said stator, and wherein said back iron of said stator further comprises a first loop of electrical resistive wire extending therein.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: March 6, 2018
    Inventors: Serge Grand, Serge Bloch
  • Patent number: 9906093
    Abstract: A universal mounting housing for a linear actuator has a housing with a wall having an inner surface and an outer surface with at least one bore to enable securement of the housing. The at least one bore has an axial open portion that enables passage of attachment members. The at least one bore has a first and second diameter portion. The first diameter portion extends a length of the open portion. The diameter is of a size necessitating the attachment members to be axially moved into the at least one bore. The second diameter portion is larger than the first diameter portion. The second diameter portion receives a head portion of the attachment member.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: February 27, 2018
    Assignee: Delaware Capital Formation, Inc.
    Inventor: Matthew Rentz
  • Patent number: 9906108
    Abstract: An electric machine that includes a rotor core made of magnetic steel; a stator configured with stationary windings therein; openings disposed within or on the rotor core; and a rotor circuit that is configured to introduce saliency based on an orientation of part of the rotor circuit in relationship to a pole location of the electric machine, where the rotor circuit is made of a conductive, non-magnetic material. A rotor component and various embodiments of electric machines are also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: February 27, 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: 9903372
    Abstract: A pump is provided that includes a molded stator having a substrate on which is mounted a magnetic-pole position detection element and that also includes a rotor having a rotor unit with one end thereof in an axial direction being opposed to the magnetic-pole position detection element and the other end thereof in the axial direction being provided with an impeller attachment unit. The rotor unit includes a magnet, a sleeve bearing, and a resin portion formed from a thermoplastic resin that is used for integrally molding the magnet and the sleeve bearing and that constitutes the impeller attachment unit. The magnet includes a plurality of through holes that each extend in the axial direction; and each of the through holes is embedded in the thermoplastic resin that constitutes a part of the resin portion.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: February 27, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuto Urabe, Hiroki Aso, Mamoru Kawakubo, Mineo Yamamoto, Hiroyuki Ishii, Junichiro Oya
  • 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: 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