Patents by Inventor Duncan BULLOCK

Duncan BULLOCK has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Power supply device
    Patent number: 8432058
    Abstract: A power supply device that enables completion of precharging to be accurately determined without increasing manufacturing cost. The power supply device includes a battery pack, a positive main contactor, a precharge contactor, and a precharge resistor. The battery pack supplies DC power to an inverter. A smoothing capacitor is arranged between input terminals of the inverter. The positive main contact disconnects the inverter from a positive electrode of the battery pack. A voltmeter detects the voltage between a negative electrode of the battery pack and a connection node of the precharge contactor and precharge resistor. Voltage detection values taken by the voltmeter immediately before precharging and during precharging are used to determine precharging completion.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: April 30, 2013
    Assignee: Panasonic EV Energy Co., Ltd.
    Inventors: Yasushi Matsukawa, Duncan Bullock, Tetsuya Mizoguchi
  • POWER SUPPLY DEVICE
    Publication number: 20080185999
    Abstract: A power supply device that enables completion of precharging to be accurately determined without increasing manufacturing cost. The power supply device includes a battery pack, a positive main contactor, a precharge contactor, and a precharge resistor. The battery pack supplies DC power to an inverter. A smoothing capacitor is arranged between input terminals of the inverter. The positive main contact disconnects the inverter from a positive electrode of the battery pack. A voltmeter detects the voltage between a negative electrode of the battery pack and a connection node of the precharge contactor and precharge resistor. Voltage detection values taken by the voltmeter immediately before precharging and during precharging are used to determine precharging completion.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 7, 2008
    Applicant: PANASONIC EV ENERGY CO., LTD.
    Inventors: Yasushi MATSUKAWA, Duncan BULLOCK, Tetsuya MIZOGUCHI