Patents Examined by Shawki S. Ismail
  • Patent number: 10901448
    Abstract: Systems and methods for measuring and modifying an input voltage provided to a control panel are provided. Some systems can include measuring the input voltage provided by a power supply, determining whether the input voltage is within a range of acceptable input voltages, transmitting, to the power supply, a modulated signal on a direct current line between the power supply and the control panel instructing the power supply to modify the input voltage, and generating a notification when the input voltage is outside of the range of acceptable input voltages.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: January 26, 2021
    Assignee: Ademco Inc.
    Inventors: Mark H. Schmidt, Sandro Chilelli, Thomas Winkeler
  • Patent number: 10897200
    Abstract: A half-bridge converter is controlled by a circuit including a differential circuit receiving a reference signal and a feedback signal which is a function of an output signal from the converter. The half-bridge converter includes high-side and low-side electronic switches. A comparator generates a PWM-modulated signal for controlling the converter as a function of the duty cycle of the PWM-modulated signal in response to a signal at an intermediate node between the high-side and low-side electronic switches and an output of the differential circuit. A gain circuit block coupled between the intermediate node and the input of the comparator applies a ramp signal to the input of the comparator which is a function of the signal at the intermediate node. A variable gain is applied by the gain circuit block in order to keep a constant value for the duty cycle of said PWM-modulated signal irrespective of converter operation.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: January 19, 2021
    Assignee: STMicroelectronics S.r.l.
    Inventors: Alberto Cattani, Stefano Ramorini, Alessandro Gasparini
  • Patent number: 10896777
    Abstract: A shaft outputs a thrust force in an axial direction by using a magnetic flux caused by an electric current flowing through a coil. A housing is made of resin and retains the shaft. The housing has a base portion having an outer circumferential surface, which is configured to be entirely in contact tightly with a sealing member. The housing further has a distal portion having an outer circumferential surface defining a depression. The outer circumferential surfaces of the base portion and the distal portion are substantially equal in diameter and are formed continuously.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: January 19, 2021
    Assignee: DENSO CORPORATION
    Inventors: Masashi Arao, Atsushi Ota
  • Patent number: 10897168
    Abstract: A magnetizing method includes the steps of preparing a rotor comprising a rotor core having a magnet insertion hole and a permanent magnet provided in the magnet insertion hole, placing the rotor so as to face a tooth around which a winding is wound, rotating the rotor in a first rotating direction by a first angle ?1 from a rotational position where a center of the magnet insertion hole in a circumferential direction of the rotor core faces a middle portion between both ends of the winding in the circumferential direction and supplying electric current to the winding, and rotating the rotor in a second rotating direction opposite to the first rotating direction by a second angle ?2 from the rotational position direction and supplying electric current to the winding. The second angle ?2 is smaller than the first angle ?1.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: January 19, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Koji Yabe, Yoshikazu Fujisue, Kazuya Kumagai, Takahiro Tsutsumi
  • Patent number: 10890154
    Abstract: The electromagnetic switch device for a starter includes: an A connector which forms a starting circuit, which is connected to a starting resistor, and which has an end at which one of a pair of starting circuit contacts is located; a B connector which forms the starting circuit, which is connected to one of a pair of main fixed contacts, and which has an end at which the other of the pair of starting circuit contacts is located; an insulating member electrically insulating the A connector and the B connector from a main fixed core; and an elastic member sealing a contact chamber, wherein the A connector and the B connector are held between a terminal block and the main fixed core with the insulating member and the elastic member interposed therebetween.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: January 12, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihiro Morimoto, Takuma Ono
  • Patent number: 10892678
    Abstract: A bidirectional phase-shift full bridge converter includes a primary side having switch devices forming a full-bridge power stage and a first inductor connected to the power stage, a secondary side having switch devices forming a power stage and a second inductor connected to that power stage, a transformer, and a controller for controlling switching of the switch devices to transfer energy from the primary to secondary side in a first mode, and to transfer energy from the secondary to primary side in a second mode. In the second mode, the controller controls switching of the switch devices to pre-charge the first inductor at, near or above a current level of the second inductor prior to transferring energy from the secondary to primary side, so that the current in the first inductor is at, near or above the current in the second inductor at the beginning of the energy transfer.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: January 12, 2021
    Assignee: Infineon Technologies Austria AG
    Inventors: Manuel Escudero Rodriguez, Matteo-Alessandro Kutschak, David Meneses Herrera
  • Patent number: 10892656
    Abstract: A stator, wherein the coil unit includes a coil end portion projecting from an axial end face of the stator core; the coil end portion includes a plurality of peak portions projecting axially outward and arranged in a circumferential direction, and a plurality of lead wire portions for supplying electric power to the coils; and each of the lead wire portions includes an extension portion extending at least in an axial direction, and a bent portion that is bent at least from the axial direction to a radial direction, at least a part of the bent portion being disposed on a stator core side with respect to the peak portions in the axial direction, in a space between the peak portions that are closest to the extension portion in the radial direction and that are adjacent in the circumferential direction.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: January 12, 2021
    Assignee: AISIN AW CO., LTD.
    Inventors: Shingo Hashimoto, Shingo Sato, Kiyotaka Koga
  • Patent number: 10892659
    Abstract: A stator unit for including a plurality of coils includes a stator core configured to have the coils wound around the stator core; and a routing member including a plurality of groove configured to have wires routed in the groove, the wires extending from the coils.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: January 12, 2021
    Assignee: TOP CO., LTD.
    Inventors: Suguru Sakamoto, Yoshiteru Kurokawa, Junya Okabe, Hiroyuki Miyoshi, Yoshihiro Kodera
  • Patent number: 10884519
    Abstract: The invention provides a scroll wheel module, which includes an adjustment wheel, a scroll wheel and a transmission mechanism. The adjustment wheel includes an adjustment portion. The scroll wheel includes a contact portion. The transmission mechanism has a first end and a second end opposite to each other, the first end is connected to the adjustment portion of the adjustment wheel, and the second end is adjacent to the scroll wheel. When the adjustment wheel is rotated, the first end of the transmission mechanism produces a displacement relative to the adjustment portion such that the second end of the transmission mechanism applies a force to the contact. A magnitude of the force is proportional to a rotational force of the scroll wheel.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: January 5, 2021
    Assignees: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, Lite-On Technology Corporation
    Inventors: Chin-Yuan Lin, Chih-Wen Su, Hong-Che Yen, Urey Deng
  • Patent number: 10886846
    Abstract: A power converter circuit includes a power stage comprising a transformer and a power switch. The power switch can be controlled in response to a PWM signal to provide a primary current through a primary winding of the transformer to induce a secondary current in a secondary winding of the transformer to generate an output voltage. The power stage includes a switching node having a switching voltage between the power switch and the primary winding. A switching controller includes a control transistor device to initiate an operational voltage associated with the control transistor device during a startup mode of the power converter circuit and to provide a control voltage based on an amplitude of the switching voltage during a normal operating mode. The switching controller generates the PWM signal in response to comparing the control voltage and a predetermined switching threshold voltage.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: January 5, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Pei-Hsin Liu, Richard Lee Valley
  • Patent number: 10886801
    Abstract: An electric machine includes a rotor, permanent magnets, a stator, and a stator winding wound about a plurality of teeth to form a number of stator magnetic poles. The rotor includes a rotor core and a plurality of walls that form openings in the rotor core. A permanent magnet is mounted in each of the openings formed in the rotor core. The plurality of permanent magnets are arranged to form a plurality of groups of permanent magnets that are equally circumferentially distributed around the rotor core with an interior polarity on a side of each permanent magnet facing other permanent magnets of the group of permanent magnets to which the permanent magnet is associated that is the same for all of the permanent magnets. Each permanent magnet is arranged to form a rotor pole, wherein a number of rotor poles is greater than the number of stator magnetic poles.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: January 5, 2021
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Wenbo Liu, Thomas A. Lipo
  • Patent number: 10886849
    Abstract: Current regulating techniques utilizing buck-boost circuitries are disclosed. A buck switching device is used in an input stage of a buck-boost circuitry of some embodiments for regulating an input current thereof, and a boost switching device is used in an output stage thereof. A control system is used to set the buck switching device into a closed state at a beginning of each cycle of a periodic timing signal, and open the buck switching device to cause the input current to converge towards a defined target current value, while an unrelated controller changes in each cycle the boost switching device into an open state based on an input/output dependent force-on duty cycle value, and thereafter change the boost switching device back into the closed state whenever the output current of the boost circuit drops below a determined threshold current value.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: January 5, 2021
    Assignee: A.B. POWER LTD.
    Inventor: Avraham Owshanko
  • Patent number: 10886859
    Abstract: The alternating-current power supply device 1 has: an alternating-current generation bridge 10 for obtaining an alternating-current output; PWM control bridges 20, 30, each including two switch components; and a coupling reactor 40 connected to the PWM control bridges 20, 30. The coupling reactor 40 includes: a core 43; and windings 41, 42 which are connected at one end to respective output ends of the PWM control bridges 20, 30 while being coupled with each other via the core 43. The windings 41, 42 are respectively wound in such directions that magnetic fluxes generated in the core 43 cancel each other out.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: January 5, 2021
    Assignee: ROHM CO., LTD.
    Inventors: Hirotaka Otake, Yusuke Nakakohara, Mamoru Tsuruya
  • Patent number: 10886833
    Abstract: A switch mode power supply controller includes a switch terminal adapted to be coupled to an inductor that drives a load, high- and low-side switches a pulse width modulation (PWM) circuit, and a current monitor circuit. The PWM circuit is coupled to a feedback terminal for receiving a feedback signal, and alternatively drives the high-side switch and the low-side switch with a duty cycle set using the feedback signal to regulate an output voltage to a desired level in a work mode, and keeps both the high-side switch and the low-side switch non-conductive in a non-work mode. The current monitor circuit provides a current monitor signal representative of a current driven from the inductor to the load, wherein the current monitor circuit forms the current monitor signal by measuring an inductor current during a work mode, and by emulating the inductor current during a non-work mode.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: January 5, 2021
    Assignee: FAIRCHILD SEMICONDUCTOR CORPORATION
    Inventors: Enzhu Liang, Kaiwei Yao, Ming Gu
  • Patent number: 10875761
    Abstract: A micro-electrical-mechanical system (MEMS) device includes one or more slidable connection assemblies for releasably coupling the micro-electrical-mechanical system (MEMS) device to a wafer from which the micro-electrical-mechanical system (MEMS) device was made. The MEMS device may include a MEMS actuation core, and a MEMS electrical connector assembly electrically coupled to the MEMS actuation core configured to be electrically coupled to a printed circuit board.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: December 29, 2020
    Assignee: MEMS Drive, Inc.
    Inventors: Matthew Ng, Xiaolei Liu, Guiqin Wang
  • Patent number: 10878983
    Abstract: An electromagnet assembly has an outer shield coil assembly having a first end and a second end, and further has a housing having a first end wall and a second end wall spaced apart from one another by a side wall. The outer shield coil assembly and housing are centered on a common assembly axis. A first support pin extends between and couples the first end wall of the housing and the first end of the outer shield coil assembly. A second support pin extends between and couples the second end wall of the housing and the second end of the outer shield coil assembly. Hence the outer shield coil assembly is carried by the housing by the pins. The coupling of the end walls of the housing and ends of the outer shield coil assembly is configured to prevent relative radial and rotational movement between the outer shield coil assembly and the housing.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: December 29, 2020
    Assignee: Siemens Healthcare Limited
    Inventors: William James Bickell, Jonathan Noys, Alun Down
  • Patent number: 10879762
    Abstract: A actuator and a pump using the actuator are provided. The actuator is used to drive a pump body. The actuator includes a base, a transmission assembly and a motor received in the base. The motor includes a stator, a rotor, and a driving shaft. The driving shaft is connected to the transmission assembly. The base includes a mounting bracket. The mounting bracket is partly embedded in the motor. The actuator has good integrality and a compact structure.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: December 29, 2020
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Yong Bin Li, Chuan Lin Zhao, Ping Wang, Sheng Li Li
  • Patent number: 10873244
    Abstract: An electronic module is provided for a power tool having an electric motor. The module includes a printed circuit board (PCB) having a first surface and a second surface; first set of power switches mounted on the first surface of the PCB; second set of power switches mounted on the PCB and electrically coupled to the first power switches forming an inverter bridge circuit for driving the electric motor; a first heat sink surface-mounted on the first surface of the PCB and having a planar main body disposed over the first power switches; a module housing arranged to receive the PCB therein; and a second heat sink secured to the module housing in thermal communication with the first heat sink to transfer heat from the first power switches.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: December 22, 2020
    Assignee: Black & Decker Inc.
    Inventors: Madhur M. Purohit, Joshua M. Lewis, Marcell E. Coates, Michael D. Grove, Victor A. Dorado
  • Patent number: 10874014
    Abstract: A cover covering a rectifying device includes a cover end wall portion, a cover outer wall portion, and a cover intermediate portion interposed between the cover end wall portion and the cover outer wall portion. The cover end wall portion includes an inner peripheral side intake portion, and the cover intermediate portion includes an outer peripheral side intake portion. The outer peripheral side intake portion includes an axial direction covering portion existing in a position that is closer to a rotary electric machine main body than the cover end wall portion in an axial direction, and a radial direction covering portion that connects the axial direction covering portion to an outer peripheral portion of the cover end wall portion. Intake holes are provided respectively in the inner peripheral side intake portion, the axial direction covering portion, and the radial direction covering portion.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: December 22, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masao Akiyoshi, Yuzuru Kobayashi, Kentaro Honsho
  • Patent number: 10872718
    Abstract: A coil component includes a first magnetic body, an insulator stacked on the first magnetic body, a second magnetic body stacked on the insulator, a coil which is disposed in the insulator and which includes at least one coil conductor layer, and an internal magnetic body disposed within the inner circumference of the coil and connected to the first magnetic body and the second magnetic body. In a cross section in a stacking direction, the width of the internal magnetic body increases continuously from the first magnetic body side toward the second magnetic body side. Also, the inner circumferential surface of an end coil conductor layer located closest to the second magnetic body faces the outer circumferential surface of the internal magnetic body and is inclined in the same direction as the outer circumferential surface of the internal magnetic body with respect to the stacking direction.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: December 22, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Morihiro Hamano, Keiichi Tsuduki, Kouhei Matsuura, Minoru Matsunaga