Patents Examined by Christopher J Clark
  • Patent number: 12040139
    Abstract: A variable capacitor includes an enclosure having first and second conductive collars separated by an intermediate electrically insulating element. A movable capacitor plate assembly is electrically coupled to the first conductive collar, and a fixed capacitor plate assembly is electrically coupled to the second conductive collar. An actuator extends into the enclosure for advancing and retracting the movable capacitor plate assembly relative to the fixed capacitor plate assembly. A hermetically sealed volume within the enclosure maintains a vacuum or a liquid serving as a dielectric between a capacitor plate of the movable capacitor plate assembly and a capacitor plate of the fixed capacitor plate assembly. At least one capacitor plate comprises a coiled cylindrical plate having a having a greater height at a center portion of the capacitor plate coil and a lower height at an outer portion of the capacitor plate coil.
    Type: Grant
    Filed: May 9, 2022
    Date of Patent: July 16, 2024
    Assignee: COMET TECHNOLOGIES USA, INC.
    Inventors: Anthony Oliveti, Tigran Poghosyan, Gary Russell
  • Patent number: 12038264
    Abstract: A wireline release tool for downhole intervention, the tool including a housing having an electrical input and an electrical output; a pass-through switch located inside the housing and electrically connected between the electrical input and the electrical output; and a current limiter device located inside the housing and electrically connected between the electrical input and the electrical output. The pass-through switch is connected in parallel to the current limiter device, between the electrical input and the electrical output.
    Type: Grant
    Filed: May 10, 2022
    Date of Patent: July 16, 2024
    Assignee: GEODYNAMICS, INC.
    Inventors: Brad Perry, Roger Archibald
  • Patent number: 12015394
    Abstract: Fast turn-on protection of a cascode switch is presented herein. A cascode circuit includes a depletion mode field effect transistor and an enhancement mode field effect transistor electrically coupled in cascode. During turn-on, a protection circuit detects an overcurrent fault by observing a plateau of a cascode node voltage. An overcurrent fault may be detected in response to the plateau existing for greater than a threshold time duration.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: June 18, 2024
    Assignee: POWER INTEGRATIONS, INC.
    Inventor: Rajko Duvnjak
  • Patent number: 12015262
    Abstract: An integrator for monitoring at least one parameter of an electrical signal in an electrical conductor in protective relay application. The integrator includes an integrator circuit having an input for receiving a signal from a current sensor coupled to the electrical conductor. A switch circuit has an input coupled to the output of the integrator circuit, wherein the switch circuit is controlled by the output of a temperature detection circuit. A power stage circuit has an input coupled to the output of the switch circuit, wherein the temperature detection circuit is coupled to a heating element of the power stage circuit through a temperature sensor, and the heating element is attached to a channel-shaped heatsink for heat dissipation.
    Type: Grant
    Filed: June 9, 2022
    Date of Patent: June 18, 2024
    Assignee: Accuenergy (Canada) Inc.
    Inventors: Ketao Li, Yufan Wang, Liang Wang
  • Patent number: 12009657
    Abstract: An ESD clamp circuit has an ESD detection circuit connected between a first terminal and a second terminal, with a first output node and a second output node. The ESD detection circuit is configured to output respective first and second control signals at the first and second output nodes in response to an ESD event. A discharge circuit includes a p-type transistor having a source, a drain and a gate, with the gate connected to the first output node. An n-type transistor has a source, a drain and a gate, with the gate connected to the second output node. The drain is connected to the drain of the p-type transistor. The discharge circuit is configured to establish a first ESD discharge path from the first terminal, through the p-type transistor and the n-type transistor, to the second terminal, and to further establish a second ESD discharge path in parallel with the first ESD discharge path. The second ESD discharge path includes a parasitic silicon controlled rectifier (SCR).
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: June 11, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Tao Yi Hung, Wun-Jie Lin, Jam-Wen Lee, Kuo-Ji Chen
  • Patent number: 12009808
    Abstract: Upon an input of an input signal that instructs to turn on a power semiconductor element, a pulse generation circuit generates a pulse. Upon reception of the pulse, a gated latch circuit holds an overcurrent detection state of an overcurrent detection circuit. In response to the input of the input signal and an overcurrent situation having been detected, an overcurrent mode switching circuit outputs an inverted or non-inverted oscillation signal, which is obtained by inverting or not inverting an oscillation signal generated by an oscillation signal generation circuit depending on the overcurrent situation being detected before or after the input of the input signal, and also outputs an inverted oscillation signal obtained by inverting the oscillation signal. A timing determination circuit periodically turns on the power semiconductor element based on the inverted oscillation signal and frequency divided signals obtained by frequency dividing the inverted or non-inverted oscillation signal.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: June 11, 2024
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventor: Daisuke Isobe
  • Patent number: 11993953
    Abstract: A power control system for use with an electric lock mechanism including an actuator having a coil with a particular coil impedance. The power control system comprises a power supply configured to provide an output voltage having a drive current to the actuator, a credential device powered by the power supply and configured to signal the power supply to provide the output voltage upon receiving an authorized access code, an actuator driver including a multiple-gain current-sensing circuit, and a microcontroller configured to monitor and control the power supply, credential device, actuator driver, and actuator, and determine the impedance of the coil. The microcontroller is populated by a look-up table having performance data for a plurality of coils such that the microcontroller selects a duty ratio to establish the optimum magnitude of drive current to the coil based only on the determined impedance of the coil.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: May 28, 2024
    Assignee: Hanchett Entry Systems, Inc.
    Inventors: Randall Shaffer, David Corbin
  • Patent number: 11996313
    Abstract: A member for semiconductor manufacturing apparatus has a structure in which a hollow ceramic shaft is provided on a back surface of a ceramic plate having a front surface serving as a wafer placement surface. The member for semiconductor manufacturing apparatus includes an RF electrode embedded in the ceramic plate, an RF connector disposed outside of the hollow interior of the ceramic shaft, and an RF link member provided between the RF connector and the RF electrode. The RF link member has a branching portion consisting of a plurality of RF rods, and the branching portion extends to the outside of the ceramic shaft.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: May 28, 2024
    Assignee: NGK INSULATORS, LTD.
    Inventor: Ryuji Tamura
  • Patent number: 11984823
    Abstract: At least some embodiments of the present disclosure direct to an electrostatic sheet jamming device formed by a sheet having a conductive layer and a dielectric layer. The jamming device includes a first section of the sheet, the first section being separated from the sheet, and a second section of the sheet, the second section being separated from the sheet. The sheet is non-extensible and flexible. The first section and the second section are slidable relative to each other in a first state. The first section and the second section are jammed with each other in a second state when a voltage is applied between a conductive layer of the first section and a conductive layer of the second section.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: May 14, 2024
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas R.. Corrigan, David J. Rowe, Andrew H. Tilstra
  • Patent number: 11984997
    Abstract: The present disclosure relates to a polarity correction circuit. The polarity correction circuit may include a detection module and a switching module. The detection module may be configured to detect a polarity of a DC voltage transmitted to a powered device and generate one or more control signals based on the polarity of the DC voltage. The switching module may be configured to receive the one or more control signals and a data signal transmitted from the powered device. The switching module may be further configured to adapt a polarity of the data signal based on the one or more control signals such that the polarity of the data signal is accordant with the polarity of the DC voltage.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: May 14, 2024
    Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
    Inventor: Zhiji Deng
  • Patent number: 11984760
    Abstract: In one aspect, a modular static transfer switch is provided. The module static transfer switch includes an output configured to couple to a load, a first input configured to couple to a first power source, and a second input configured to couple to a second power source. The modular static transfer switch further includes a plurality of sold-state switch modules each comprising at least one solid-state switch. A first plurality of the solid-state switch modules are coupled in parallel between the first input and the output, each configured to selectively couple the first power source to the output using the at least one solid-state switch. A second plurality of the solid-state switch modules are coupled in parallel between the second input and the output, each configured to selectively couple the second power source to the output using the at least one solid-state switch.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: May 14, 2024
    Assignee: ABB Schweiz AG
    Inventors: Yu Du, Christopher Alan Belcastro, Waqas Mahmood Arshad
  • Patent number: 11972894
    Abstract: A power divider includes a first inductor connected between a first terminal and a second terminal, a second inductor connected between the first terminal and a third terminal, a resistor connected between a second terminal side of the first inductor and a third terminal side of the second inductor, a third inductor connected between a connection portion between the first inductor and the resistor, and the second terminal, a fourth inductor connected between a connection portion between the second inductor and the resistor, and the third terminal, a fourth capacitor connected in parallel with the resistor, and a fifth capacitor connected between the second terminal and the third terminal.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: April 30, 2024
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Makoto Ogata, Takuya Sato
  • Patent number: 11955794
    Abstract: A surge protection system includes a receptacle body, at least one power output jack, a power obtaining device, at least one surge protection module, a microcontroller unit, and a surge detection circuit. The at least one surge protection module includes a housing, a memory element, and a surge protection circuit that includes a surge absorption element and a thermal fuse connected in series and parallel. The surge absorption element absorbs a surge inputted from an external power supply, and the memory element records a number of surges carried by the surge absorption element. When the surge enters the surge protection system from the external power supply, the surge absorption element absorbs the surge, and the surge detection circuit outputs a signal to the microcontroller unit that writes the number of surges carried by the surge absorption element into the memory element.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: April 9, 2024
    Assignee: POWERTECH INDUSTRIAL CO., LTD.
    Inventors: Jung-Hui Hsu, Po-Hua Hsu, Chi-Chien Chen
  • Patent number: 11955790
    Abstract: An electronic fuse circuit for safeguarding a multi-channel electronic power distributor includes a driver circuit for each channel of the power distributor configured to control an electronic switch of a corresponding channel to assume a certain state, and a microcontroller interface configured to receive from a microcontroller a command for setting the state of the electronic switch of a corresponding channel. The driver circuit of the corresponding channel is configured to set the state of the electronic switch of the corresponding channel according to the command from the microcontroller. The electronic fuse circuit further includes a safety circuit for detecting a malfunction in the microcontroller and/or the power distributor. In the event of a detected malfunction in the microcontroller and/or the power distributor, the driver circuit of each channel is configured to set the state of the electronic switch of the corresponding channel according to a channel-specific preconfigured safety state.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: April 9, 2024
    Assignee: Lisa Draexlmaier GmbH
    Inventor: Michael Wortberg
  • Patent number: 11942927
    Abstract: The present invention relates to a method for short-circuit detection by saturation detection in power semiconductor switches and to a corresponding device. A reference voltage (Uref) is provided as a function of a supply voltage (UVDD) of a power semiconductor switch. A differential voltage (Udiff) is generated from the difference of a voltage drop (U?) of a load path of the power semiconductor switch and the provided reference voltage (Uref). The generated differential voltage (Udiff) is compared with a predetermined threshold voltage (Ulim). A short-circuit current in the load path of the power semiconductor switch is detected when the differential voltage (Udiff) exceeds the threshold voltage (Ulim). In this case, the power semiconductor switch is opened.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: March 26, 2024
    Assignee: Robert Bosch GmbH
    Inventors: Calin Purcarea, Daniel Schweiker, Deepa Mathai, Falko Friese
  • Patent number: 11942765
    Abstract: An underarm gang operated vacuum break switch (underarm switch) has an electrically live portion under a mounting arm, which provides advantages over the standard vacuum break switch, which have the electrically live portion above the mounting arm. Because the non-electrified mounting arm is above the electrified portion, the underarm switch is safer for perching birds and other wildlife. The nature of the underarm switch also provides other benefits including a disconnect blade that when opened creates a visual gap to ensure electrical discontinuity along with a safety locking arm tied to deactivating the underarm switch. Adding to the safety measures is a visual indicator that shows an electrician when the switch is live and safe to open the disconnect blade. Other safety measures include a shock absorber assembly and inertia slowing mass protecting electrical contacts within the vacuum break switch from failing.
    Type: Grant
    Filed: June 27, 2023
    Date of Patent: March 26, 2024
    Assignee: Inertial Engineering and Machine Works, Inc.
    Inventors: Dean Carnell Sanders, Elliott James Gist
  • Patent number: 11935714
    Abstract: A load control device may control power delivered to an electrical load from an AC power source. The load control device may include a controllably conductive device adapted to be coupled in series electrical connection between the AC power source and the electrical load, a zero-cross detect circuit configured to generate a zero-cross signal representative of the zero-crossings of an AC voltage. The zero-cross signal may be characterized by pulses occurring in time with the zero-crossings of the AC voltage. The load control device may include a control circuit operatively coupled to the controllably conductive device and the zero cross detect circuit. The control circuit may be configured to identify a rising-edge time and a falling-edge time of one of the pulses of the zero-cross signal, and may control a conductive state of the controllably conductive device based on the rising-edge time and the falling-edge time of the pulse.
    Type: Grant
    Filed: January 1, 2023
    Date of Patent: March 19, 2024
    Assignee: Lutron Technology Company LLC
    Inventors: Robert W. Lenig, Michael Sizemore, Joshua W. Thaler, Russell L. MacAdam
  • Patent number: 11929580
    Abstract: A power strip and method for providing and controlling power to power strip outlets and for differing amperages and/or voltages is disclosed. The power strip includes a power cord for connecting to a power outlet and a plurality of electrical outlets of the same of differing amperage and voltage connected to receive the electrical current from the power cord. At least one of the plurality of electrical outlets is powered continuously with electrical current from the power outlet. Electrical current from the power outlet to the plurality of electrical outlets is controlled by load presence controlled circuit, current limiting circuit, and/or soft-start circuitry.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: March 12, 2024
    Assignee: RAYMOND INNOVATIONS, LLC
    Inventor: Will Hansen
  • Patent number: 11929606
    Abstract: The present disclosure discloses a safety control circuit and an automobile emergency starting clamp provided with the same. The safety control circuit is integrated with an EC5 input module, an ignition clip module, a relay module, a timing control module, an input high-voltage protection module, a voltage-stabilizing power supply module, an input low-voltage protection module, a high-temperature protection module, a low-temperature protection module, an error alarm module, a first timing module, a second timing module and a light display module, and has fast response and high safety. The automobile emergency starting clamp provided with the circuit includes an anode cable clamp, a cathode cable clamp and a control box; and the control box includes a control box upper shell, a control box lower shell, an on/off button and the above-mentioned safety control circuit.
    Type: Grant
    Filed: August 24, 2022
    Date of Patent: March 12, 2024
    Assignee: Dongguan Hang Che Bao Future Technology Co., Ltd.
    Inventor: Guozhi Zeng
  • Patent number: 11916368
    Abstract: The invention relates to remote activation of a communication module of a self-powered intelligent electronic device (IED). The IED controls an auto recloser mounted on an electric pole of a power distribution network. A controller of the IED, receives an activation signal from a trigger source, positioned within a predefined distance from the IED, through an optical sensor to activate the communication module. A control signal is generated, upon the controller of the IED detecting the activation signal, for powering the communication module from a power supply module. The power supply module is enabled to power the communication module for a duration controlled with the control signal. The communication module is activated for communicating a plurality of data associated with the IED to a remote communication device upon enabling the power supply module for the communication module.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: February 27, 2024
    Assignee: ABB Schweiz AG
    Inventors: Nishith Patel, Darshit Prajapati, Thomas Kueng, Vishal Shah, Tero Talvitie, Juhani Koivupuro