Patents Examined by Burton S. Mullins
  • Patent number: 11563386
    Abstract: Provided are an electromechanical transducer including a light movable member that is easy to move and charged portions whose amount of electrostatic charge does not substantially change over time and a method for manufacturing such an electromechanical transducer.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: January 24, 2023
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Tomoo Ikeda, Izumi Yamamoto, Takuya Shirai, Yudai Hoshi
  • Patent number: 11557984
    Abstract: A footwear system can employ a brake and/or a clutch, such as a one-way clutch, to convert human motion into usable electricity. The brake and one-way clutch can be used together, such as on opposite ends of a spring. During a storage phase, the brake can be engaged and the one-way clutch disengaged so the spring stores an energy. After the storage phase, the brake can be removed to initiate the release phase since the brake is not stopping the spring, but the one-way clutch allows the stored energy to be released.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: January 17, 2023
    Assignee: The Government of the United States, as represented by the Secretary of the Army
    Inventor: Nathan Sharpes
  • Patent number: 11545915
    Abstract: A power generator or sensor apparatus is provided. In another aspect, a power generator is used for water wave energy harvesting. A further aspect provides a power generator including a buoyant, waterproof and/or enclosed outer shell, at least one enclosed inner shell located within the outer shell, a first plurality of balls located between the outer and inner shells, a second plurality of balls located within the inner shell, and spaced apart electrodes affixed to an interior surface of the outer shell. Moreover, an aspect of the present power generator uses fluid, such as water wave movement and wind blowing, to cause nested shells to move which moves multiple balls therein between spaced apart electrodes to generate triboelectric charges or energy for a variety of applications.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: January 3, 2023
    Assignee: Board of Trustees of Michigan State University
    Inventors: Changyong Cao, Yaokun Pang
  • Patent number: 11533000
    Abstract: An actuator drive apparatus according to a first aspect includes a first member, a second member that faces the first member via a gap, a gap sensor that detects a dimension of the gap, a first actuator that changes the dimension of the gap through input of a first voltage signal, and a second actuator that changes the dimension of the gap through input of a second voltage signal, in which the first voltage signal is a voltage signal that becomes a constant bias voltage after a lapse of a predetermined time, and includes an overshoot signal larger than the bias voltage before the lapse of the predetermined time, and the second voltage signal is a voltage signal that is feedback-controlled so that a detection value detected by the gap sensor approaches a target value.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: December 20, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Nozomu Hirokubo
  • Patent number: 11522469
    Abstract: Devices, methods, and systems for electrostatic machines which can act as both an electric motor, converting electrical energy to mechanical energy, and an electric generator, converting mechanical energy to electrical energy, are described. In some embodiments, a spring positioned between two oppositely charged plates may be used as an electric motor and/or electric generator.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: December 6, 2022
    Assignee: Alliance for Sustainable Energy, LLC
    Inventors: Panagiotis George Datskos, Jochem Weber, Blake Craig Boren
  • Patent number: 11523509
    Abstract: An integrated circuit includes a nexus and a first, a second, a third, and a fourth circuit board. Each of the first and second circuit boards is coupled to opposing sides of the nexus, and each of the third and fourth circuit boards is coupled to opposing sides of the second circuit board. The integrated circuit is transitionable between a first, open configuration, in which the first, second, third and fourth circuit boards and the nexus are substantially coplanar, and a second configuration, in which the first, second, third and fourth circuit boards and the nexus are coupled to one another to define a cavity therein.
    Type: Grant
    Filed: March 4, 2021
    Date of Patent: December 6, 2022
    Assignee: Covidien LP
    Inventors: Chi Min Seow, Jaimeen Kapadia, Richard Lech, Michael Zemlok, Mark Macleod
  • Patent number: 11515759
    Abstract: A brush device includes a holder, a brush, a choke coil, and a terminal member. The holder includes a base extending in a direction orthogonal to an axial direction of an armature. The choke coil includes a core and a winding. The core extends in the axial direction of the armature and includes a first end surface in a longitudinal direction faced toward the base of the holder and a second end surface in the longitudinal direction located at a side opposite to the first end surface. The terminal member is coupled to the holder and connected to the winding. The terminal member includes a contact portion that is in contact with the second end surface of the core.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: November 29, 2022
    Assignee: DENSO CORPORATION
    Inventors: Kazuhi Matsugatani, Kenta Goto
  • Patent number: 11496006
    Abstract: A slot includes a coil housing portion having first and second side portions and a bottom portion. A first straight line connects first and second points which are boundaries between the bottom portion and the side portions. A slot opening has third and fourth points closest to the first and second side portions. A second straight line connects the first and third points. A third straight line connects the second and fourth points. A first region is surrounded by the first straight line and the bottom portion. A second region is surrounded by the second straight line and the first side portion, and is surrounded by the third straight line and the second side portion. A third region is surrounded by the three straight lines. Areas A1, A2 and A3 of the three regions and total cross-sectional areas S1, S2, S3 of coils therein satisfy (S1/A1)>(S2/A2)>(S3/A3).
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: November 8, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Emi Tsukamoto, Koji Yabe
  • Patent number: 11488420
    Abstract: Methods of estimating tribological damage described herein include examples where varying power is applied between surfaces engaged in frictional contact. Calculations evaluate power consumed at the relevant frictional contact and temperature values may be gathered to supplement the calculated power. Instantaneous and cumulative assessments of damage are calculated based on that information. Measurements or calculations of electrical power may be used as part of the damage assessment.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: November 1, 2022
    Assignee: Board af Supervisors af Louisiana State University and Agricultural and Mechanical College
    Inventors: Michael M. Khonsari, Lijesh Koottaparambil
  • Patent number: 11489460
    Abstract: The vibration-driven energy harvester includes: a first electrode; a second electrode facing the first electrode; a holder holding the first electrode and the second electrode so as to be movable relative to each other; a half-wave rectifier electrically connected to the first and the second electrodes that causes current flowing from the first electrode to the second electrode to flow to an output unit, and cuts off current flowing from the second electrode toward the first electrode; and a second rectifying element electrically connected to the first and the second electrodes that allows the current flowing from the second electrode to the first electrode and blocks the current flowing from the first electrode to the second electrode, wherein: the first electrode has a positively charged electret in a surface facing the second electrode, or the second electrode has a negatively charged electret in a surface facing the first electrode.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: November 1, 2022
    Assignees: The University of Tokyo, Saginomiya Seisakusho, Inc.
    Inventors: Hiroshi Toshiyoshi, Hisayuki Ashizawa, Masahiro Morita
  • Patent number: 11482949
    Abstract: An electrostatic harvester device for charging an energy storage device is provided. The electrostatic harvester device comprises an inductor, a variable capacitor device, a semiconductor device, and a plurality of transistors. The inductor is operable to receive electric charge and store the electric charge. The variable capacitor device is configured to receive electric charge from the inductor and to change capacitance in response to physical stimulation. The semiconductor device is operable to allow electric current to flow from the variable capacitor device. The transistors are operable to connect at least two of the aforementioned devices. At least one of the transistors comprises at least one of gallium nitride or aluminum gallium nitride.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: October 25, 2022
    Assignee: HONEYWELL FEDERAL MANUFACTURINGS TECHNOLOGIES, LLC
    Inventors: Amy Charlene Wilson, William Daniel Hunt
  • Patent number: 11482913
    Abstract: A manufacturing method for a coil includes: a step of winding a wire (conductive wire) in multiple layers and multiple rows and forming a coil having a trapezoidal cross-sectional shape; a step of arranging the coil in a molding space surrounded by a plurality of split dies; and a step of moving the slit die in a direction of narrowing the molding space to mold the cross-sectional shape of the coil. In the step of molding the cross-sectional shape, at least one of the plurality of split dies is moved to mold the cross-sectional shape into a fan shape by surfaces formed in the split dies.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: October 25, 2022
    Assignee: NIDEC CORPORATION
    Inventor: Shigeharu Sumi
  • Patent number: 11478840
    Abstract: Provided is a manufacturing method of a wire rod for forming a coil, the manufacturing method including the steps of: placing an element wire in a forming space surrounded by a plurality of split dies; and pressure-forming the element wire by moving the plurality of split dies in a direction of narrowing the forming space. In the step of pressure-forming the element wire, at least one of the plurality of split dies is moved, and the plurality of split dies each having a surface that changes in shape in a longitudinal direction of an element wire to pressure-form the element wire into the wire rod having a plurality of different cross-sectional shapes in the longitudinal direction.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: October 25, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Shigeharu Sumi, Shigeru Maeda
  • Patent number: 11476745
    Abstract: A moving member of a machine can include a cold plate that serves as a primary structural member for the moving member. The cold plate can have one or more cooling channels formed within the cold plate. A plurality of armature windings can be fixed to the cold plate. One or more field windings can be fixed to the cold plate. A plurality of ferromagnetic cores can be fixed to the cold plate, each ferromagnetic core positioned within a loop of at least one of the plurality of armature windings. Other embodiments are described.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: October 18, 2022
    Assignee: HYPERLOOP TECHNOLOGIES, INC.
    Inventors: Alexander Jedinger, Arbi Gharakhani Siraki, Erik Johnson, Shahriyar Beizaee, Rachel Ozer, Ju Hyung Kim
  • Patent number: 11469690
    Abstract: An electrode pair is provided including a first electrode and a second electrode. Each of the first electrode and the second electrode have an outer surface, an inner surface, a first end, a second end, and a lead extending outwardly from the first end. The lead has a first width at the first end. The second end of at least one of the first electrode and the second electrode have a recess formed therein having a first terminus and a second terminus. A second width extends between the first terminus and the second terminus of the recess. The recess is defined by a saw-tooth pattern. When the first electrode is positioned on the second electrode, the recess of the at least one of the first electrode is adjacent the lead of the other electrode.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: October 11, 2022
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Michael P. Rowe
  • Patent number: 11456681
    Abstract: Described is an electrically actuated, pneumatic driven motor. The pneumatic driven motor includes a body having first and second surfaces, the body having a chamber defined by an interior wall, a displacement cavity, and a passage that fluidly couples the displacement cavity to the chamber, a bleeder port and a bleeder port passage that fluidly couples the bleeder port to the chamber, a valve disposed in the passage between the displacement cavity and the chamber, an annular pushrod mechanism coupled to the valve, the annular pushrod mechanism having a pair of pawls that protrude from an inner surface of the annular pushrod mechanism, an axle disposed in the chamber; and a motor gear disposed about the axle, the motor gear having a plurality of teeth that selectively engage with the pawls on the pushrod mechanism according to displacement of the annular pushrod mechanism.
    Type: Grant
    Filed: January 4, 2021
    Date of Patent: September 27, 2022
    Assignee: Encite LLC
    Inventors: Stephen A. Marsh, Spencer Parker
  • Patent number: 11456630
    Abstract: A rotor for an electrical machine has at least one groove, the at least one groove includes a groove bottom and groove walls. A separating element is provided between the groove walls, and extends along the groove. The separating element is arranged on the groove bottom, at least in sections, such that groove chambers are formed along the groove.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: September 27, 2022
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Endre Barti, Florian Beck, Daniel Loos
  • Patent number: 11440397
    Abstract: A brushless bi-directional electric machine comprises a housing mounting exciting coils, a rotor and a stator, the exciting coils and the stator being stationary with respect to the housing and the rotor mounted for rotation with respect to the housing. The electric machine comprises a controller configured to control an exciting current supplied to the exciting coils.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: September 13, 2022
    Assignee: Avid Technology Limited
    Inventors: Ryan Maughan, Christopher Hodgson
  • Patent number: 11444554
    Abstract: Proposed is an actuator using a bi-directional electrostatic force, which generates a bi-directional electrostatic force in order to amplify and vibrate the vibration of a vibrator. The actuator may include an upper electrostatic force generator configured to generate a first electrostatic force in response to a first high voltage signal, a lower electrostatic force generator configured to generate a second electrostatic force in response to a second high voltage signal having a phase difference with the first high voltage signal, and a vibration generator positioned in a space between the upper electrostatic force generator and the lower electrostatic force generator and configured to generate vibration in response to the first and second electrostatic forces.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: September 13, 2022
    Assignees: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, KOREA NATIONAL UNIVERSITY OF TRANSPORTATION, IMAGIS Co., Ltd
    Inventors: Tae-Heon Yang, Han Eol Bae, Jong Reep Na, Sung Won Kim, Sung Un Kim
  • Patent number: 11437931
    Abstract: An electrostatic energy harvester broadly comprises an electrical energy storage component, an electrical energy transfer stage, first and second variable capacitors, and a switching control module. The electrical energy transfer stage includes diode-connected transistors and dictates electrical energy transfer between the electrical energy storage component and the variable capacitors. The switching control module timely switches between the first and second variable capacitors according to a state machine. Subsequent electrical energy investments from the electrical energy storage component are less than an initial electrical energy investment due to remnant electrical energy remaining at the previously active one of the first and second variable capacitors from previous electrical energy harvesting.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: September 6, 2022
    Assignee: HONEYWELL FEDERAL MANUFACTURINGS TECHNOLOGIES, LLC
    Inventor: Amy Charlene Wilson