Patents Examined by Nguyen Tran
  • Patent number: 10707741
    Abstract: A generator to generate electrical power from rotational motion and a method of making the generator. The generator includes a rotor including a plurality of magnetic poles; and a stator including a magnetic core comprising a body and teeth extending radially from the body and defining a plurality of slots therebetween. The stator also includes a first three-phase winding and a second three-phase winding, each of the first three-phase winding and the second three phase winding including first, second, and third phase windings comprised of coils individually wound around each of the teeth. At least two coils of each of the first, second, and third phase windings of the first three-phase winding and the second three phase winding are individually wound on teeth positioned next to each other.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: July 7, 2020
    Assignee: Polaris Industries Inc.
    Inventor: Stephen G. Crain
  • Patent number: 10707781
    Abstract: Systems, methods, techniques and apparatuses of power converters are disclosed. One exemplary embodiment is a method of controlling and modulating a converter with a controller including forming a mathematical representation of the electrical system including the converter, providing reference values for controlled variables, calculating gradients of controlled variables based on the mathematical representation of the electrical system, determining possible switching sequences in the modulation period, the switching sequence defining the order in which the switches are switched, for each possible switching sequence, minimizing the error between the provided references and the corresponding controlled variables based on the calculated gradients by optimizing the switching time instants of the switching sequence, selecting the switching sequence with the smallest error, and applying the switching sequence with the corresponding switching times in the modulation period to modulate the controllable switches.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: July 7, 2020
    Assignee: ABB Schweiz AG
    Inventors: Tobias Geyer, Petros Karamanakos
  • Patent number: 10707707
    Abstract: A vehicle may include an electric machine. The electric machine may include a stator surrounding sections stacked to form a rotor. Each of the sections may have nested pairs of permanent magnets radially spaced from a rotational axis of the rotor. Corresponding pairs of permanent magnets of each of the sections may be aligned along a direction of the rotational axis. Corresponding chambers adjacent to the permanent magnets may have different shapes such that corresponding pole arc angles are different.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: July 7, 2020
    Assignee: Ford Global Technologies, LLC
    Inventor: Chun Tang
  • Patent number: 10707033
    Abstract: A button, a game controller and a remote controller are provided. The button comprises a cylindrical button cap (1) and a cylindrical button bracket (2). The button bracket (2) is provided with a first magnetic connector (3), and the button cap (1) is provided with a second magnetic connector (4) at a corresponding position. The button cap (1) is covered on the button bracket (2), and the button cap (1) and the button bracket (2) are connected by a magnetic attraction force between the first magnetic connector (3) and the second magnetic connector (4). The button cap (1) and the button bracket (2) may be further provided with engageable sawtooth structures (11, 21).
    Type: Grant
    Filed: December 31, 2016
    Date of Patent: July 7, 2020
    Assignee: GOERTEK TECHNOLOGY CO., LTD.
    Inventor: Lin Geng
  • Patent number: 10707765
    Abstract: A power converter circuit includes a transformer. The transformer includes a primary winding and a secondary winding. A primary circuit is coupled to the primary winding. A secondary circuit is coupled to the secondary winding. The primary circuit and the secondary circuit are referenced to different ground voltage potentials that may vary with respect to each other. During operation, the primary circuit controls input of energy to the primary winding of the transformer. The secondary circuit receives the energy through the secondary winding and uses it to produce an output voltage to power a load. The secondary circuit receives and/or generates state information at one of multiple different levels. The secondary circuit controls a flow of current through the secondary winding to convey the state information as feedback to the primary circuit. The primary circuit analyzes a voltage at a node of the primary winding to receive the feedback.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: July 7, 2020
    Assignee: Infineon Technologies Austria AG
    Inventors: Kennith K. Leong, Arash Pake Talei, Gerald Deboy, Giuseppe Bernacchia
  • Patent number: 10702932
    Abstract: To provide a power tool configured to stably rotate an end tool. The provided power tool includes a brushless motor including a rotor configured to rotate; a rectifier circuit configured to rectify an AC voltage; a smoothing capacitor configured to smooth the AC voltage rectified by the rectifier circuit to a pulsating voltage; an inverter circuit configured to perform switching operations to output the pulsating voltage to the brushless motor; a deceleration mechanism including: a driving portion at a rotor side, a driven portion configured to transmit a rotating force to an end tool side, and an elastic member configured to transmit a rotational force of the driving portion to the driven portion, the deceleration mechanism configured to decelerate a speed of a rotation of the rotor and configured to transmit the rotation to an end tool.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: July 7, 2020
    Assignee: Koki Holdings Co., Ltd.
    Inventors: Takeru Kumakura, Shinji Kuragano
  • Patent number: 10698499
    Abstract: A mouse device includes a lower casing, a circuit board, an upper casing, a button and an elastic element. The switch module is disposed on the circuit board. The circuit board is located over the lower casing. The upper casing has a slot. The upper casing and the lower casing are combined together. The button includes a push structure. The push structure includes a contacting portion corresponding to the switch module. The push structure is penetrated through the slot. The button is pivotally coupled to the upper casing. Consequently, the button is permitted to be swung relative to the upper casing. The elastic element is arranged between the contacting portion and the upper casing. Moreover, two ends of the elastic element are respectively contacted with the contacting portion and the upper casing. Consequently, the contacting portion is in contact with the switch element.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: June 30, 2020
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Chia-Yuan Chang, Chun-Lin Chu
  • Patent number: 10700613
    Abstract: A flyback converter includes a primary-side circuit to receive an input voltage, a secondary-side circuit to generate an output voltage, a transformer coupling the primary-side circuit to the secondary-side circuit, a main switch coupled to a primary winding of the transformer, and a converter controller having a primary-side controller in signal communication with the main switch to control an on time and an off time of the main switch and to detect one or more valleys of a resonant waveform developed at the main switch during the off time of the main switch. The primary-side controller is configured to operate in a valley reduction mode of operation upon determining that the output voltage is less than a reference voltage minus a predetermined threshold value. The valley reduction mode of operation includes decrementing, for each switching cycle of the main switch, a number of valleys occurring during that switching cycle.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: June 30, 2020
    Assignee: Silanna Asia Pte Ltd
    Inventor: Aleksandar Radic
  • Patent number: 10700568
    Abstract: An electrical machine includes a stator assembly having an annular core and a conductive winding. The annular core includes a central bore. The conductive winding includes one or more stator winding bars disposed circumferentially around the central bore. The one or more stator winding bars include a core conductor and an insulation layer surrounding the core conductor. An end segment of the one or more stator winding bars at a connection interface includes a stress control structure surrounding the insulation layer. The stress control structure includes a printed scaffold and a dielectric backfill material. The dielectric backfill material fills pores of the printed scaffold. The porous scaffold is composed of a stress control material that is different from the dielectric backfill material.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: June 30, 2020
    Assignee: General Electric Company
    Inventors: Jeffrey S. Sullivan, Christopher Calebrese, Qin Chen
  • Patent number: 10693351
    Abstract: A motor driving assembly includes a motor. The motor includes an outer housing, and a rotor and a brush holder received in the outer housing. The rotor includes a rotary shaft extending out of the outer housing. A commutator is fixed on a shaft portion of the rotary shaft within the outer housing. Brushes for contacting the commutator are disposed on the brush holder. A visible identification mark fixed relative to the rotary shaft is disposed outside the outer housing of the motor, such that a relative position between the brushes and the commutator in a rotational direction of the rotary shaft is identifiable by reference to a position of the visible identification mark relative to the outer housing in the rotational direction of the rotary shaft. As such, the commutator can be prevented from stalling at a position where arcing noise may be easily generated.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: June 23, 2020
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: James Ching Sik Lau, Duncan Yiu Lung Wong, Chun Kit Cheung
  • Patent number: 10693373
    Abstract: A hybrid power converter includes a switching circuit, an LC circuit, and a detection circuit. The switching circuit includes three or more switching transistors in series that may turn on or off according to a switching cycle to generate a series of voltage pulses at an output port across one of the switching transistors. The LC circuit may be coupled to the output port of the switching circuit to receive the series of pulses and to generate an inductor current in the LC circuit. The inductor current may charge a capacitor of the LC circuit to generate an output voltage of the hybrid power converter. The detection circuit may be coupled to the switching circuit and may generate a low frequency portion of the inductor current based on one or more currents of the switching transistors to adjust the switching cycle based at least on the low frequency portion.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: June 23, 2020
    Assignee: Linear Technology Holding LLC
    Inventors: Jian Li, San-Hwa Chee
  • Patent number: 10693390
    Abstract: In inverter control for supplying power to a motor, a power conversion device includes a temperature sensor for detecting a temperature of the inverter, a voltage sensor for detecting a voltage between terminals of a capacitor that smooths the voltage between terminals between the power source and the inverter, an inverter controller for controlling the inverter, a rotation speed sensor for detecting a rotation speed of the motor, an electric current sensor for detecting electric current supplied to the motor and a discharge determination instruction controller for giving an instruction for discharging electric charges accumulated in the capacitor, in which, control of reducing the rotation speed of the motor and discharge control of the capacitor are performed in accordance with the temperature of the inverter, the rotation speed of the motor and the electric current supplied to the motor.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: June 23, 2020
    Assignees: MITSUBISHI ELECTRIC CORPORATION, HONDA MOTOR CO., LTD.
    Inventors: Kazuki Takegawa, Satoshi Ishibashi, Kazuhiko Otsuka, Masaya Takahashi
  • Patent number: 10693391
    Abstract: A method for operating an inverter and an inverter configured to convert DC power supplied from a DC power source into AC power supplied to an AC network by applying operational parameter limits which define limits for allowed operating points of the inverter, collect, during the converting, data of operational conditions related to the inverter, determine on the basis of the collected data whether the set operational parameter limits can be optimized with regard to one or more optimization criteria, and in response to determining that the set operational parameter limits can be optimized, adapt one or more of the set operational parameter limits applied in the converting on the basis of the collected data.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: June 23, 2020
    Assignee: ABB Schweiz AG
    Inventors: Kari Kovanen, Hannu Haapaniemi, Marko Harju
  • Patent number: 10686372
    Abstract: A power supply is disclosed. The power supply includes a switching converter for providing an output voltage comprising a power switch coupled to a driver for driving the power switch with an on-off switching cycle; and a voltage threshold indicator. The voltage threshold indicator includes an input for receiving an output of the converter, and an output coupled to the driver. The voltage threshold indicator is adapted to provide a temperature compensated voltage threshold, and a control signal to control the on-off switching cycle. The control signal is adapted such that when the output voltage exceeds the temperature compensated voltage threshold, a value of the control signal changes.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: June 16, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventors: Guillaume de Cremoux, Andrew Notman, Vladislav Vasilev
  • Patent number: 10686371
    Abstract: A power converter and method using a flying capacitor, a first transistor, a second transistor, a third transistor, a fourth transistor, and a driver circuit are presented. The first transistor is coupled between an input terminal and a first terminal of the flying capacitor. The second transistor is coupled between the first terminal of the flying capacitor and an output terminal. The third transistor is coupled between the output terminal and a second terminal of the flying capacitor. The fourth transistor is coupled between the second terminal of the flying capacitor and a reference potential. The driver circuit is coupled between a high side power rail and a low side power rail. There is a regulation circuit to regulate a high side voltage of the high side power rail such that the regulated high side voltage is independent of an input voltage at the input terminal.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: June 16, 2020
    Assignee: Dialog Semiconductor (UK) Limited
    Inventors: Jong Lee, Sabin Eftimie
  • Patent number: 10678283
    Abstract: A method of recovering a voltage drop at an output terminal of a voltage compensation circuit connected to a load including a variable load current according to a condition of the load. A circuit portion for a regulator having an output terminal connected to a load including a variable load current may be provided. The circuit portion may include a plurality of stages connected in parallel to said output terminal. Each of said stages may be configured as a current driver having an output connected to the output terminal of said regulator. The circuit portion may include a comparator in each of said stages configured for receiving from a first input a reference voltage value and a predetermined threshold voltage from an other input. Each of said stages may receive a corresponding different threshold voltage value on said other input. The threshold voltage values may be correlated to the variable load current.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: June 9, 2020
    Assignee: SK hynix Inc.
    Inventors: Alessandro Sanasi, Herve' Caracciolo
  • Patent number: 10680512
    Abstract: A switched-capacitor converter includes a rectifier at the output, a plurality of legs coupled between the input and the rectifier, and a controller. Each leg of the switched-capacitor converter includes a capacitor, and a switch device is connected to each leg. A first group of the legs is coupled to a first branch of the rectifier, and a second group of the legs is coupled to a second branch of the rectifier. The controller alternates switching of the first and second groups of legs after startup, to transfer energy from the input to the output during a first part of each switching cycle via the first group of legs and to ground during a second part of each switching cycle via the second group of legs. The controller or a current limited source provides for pre-charging of at least one of the capacitors during startup.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: June 9, 2020
    Assignee: Infineon Technologies Austria AG
    Inventors: Amir Babazadeh, Jens Ejury, Benjamim Tang, Robert Carroll
  • Patent number: 10679785
    Abstract: Provided is a coil component including a coil portion that has at least one layer of ring-shaped planar coil portion including a coil-wound portion and an insulative resin layer which covers the periphery of the coil-wound portion within the same layer as the coil-wound portion, and an insulative resin layer overlapping the planar coil portion; and a covering portion that covers the coil portion. The insulative resin layer has a superimposing region overlapping a forming region of the planar coil portion and a protrusion region protruding from at least any one of an inner peripheral edge and an outer peripheral edge of the superimposing region, when viewed in the direction of overlapping the planar coil portion.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: June 9, 2020
    Assignee: TDK CORPORATION
    Inventor: Akifumi Kamijima
  • Patent number: 10678288
    Abstract: A power management circuit generates a reference voltage and distributes it to a plurality of independently-enabled regulator voltage reference circuits, each of which generates a predetermined voltage for a voltage regulator. Separate enable signals and enable pre-charge signals are distributed to each regulator voltage reference circuit. As a regulator voltage reference circuit is enabled via its associated enable signal, an enable pre-charge signal is also asserted for an initial duration. Each regulator voltage reference circuit includes a voltage setting circuit and a first current limiting transistor in series and operative to interrupt current to the voltage setting circuit when the regulator voltage reference circuit is disabled. A second current limiting transistor is configurably configured as a current mirror with the first current limiting transistor, and a pre-charge bias current from a current source passes through the second transistor.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: June 9, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mikko Lintonen, Marko Pessa
  • Patent number: 10680507
    Abstract: A multiphase regulator having a variable number of phases in operation and nominal current thresholds for indicating when to add or drop a phase is provided. A digital controller for the regulator includes digital circuitry configured to adjust the nominal current thresholds based on a measured or estimated temperature of the regulator, to yield adjusted current thresholds which are a function of temperature. The digital circuitry is further configured to modify the number of phases in operation based on the adjusted current thresholds and a measured or estimated current in the regulator. The regulator can be included in an electronic component having a load, power stages for providing phase currents to the load, and at least one fan for cooling the power stages and load. The digital controller controls operation of the regulator, including adaptive control of the number of phases in operation. Corresponding control methods are also provided.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: June 9, 2020
    Assignee: Infineon Technologies Austria AG
    Inventor: Benjamim Tang