Patents by Inventor Kazutoshi Oshiro

Kazutoshi Oshiro 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).

  • Insulation detecting device for non-grounded power source
    Patent number: 7075311
    Abstract: An insulation detecting device having a capacitor and a DC power source, insulated from a ground potential part. A voltage detecting unit, detects a voltage across the capacitor. A first switching unit connects the capacitor to the DC power source in series for a first preset time shorter than a time taken for completely charging the capacitor. A second switching unit connects the capacitor between a positive terminal of the DC power source and the ground potential part in series for a second preset time. A third switching unit connects the capacitor between a negative terminal of the DC power source and the ground potential part in series for the second preset time. A fourth switching unit connects the voltage detecting unit to the capacitor after the first to third switching units are turned off. A computing unit estimates a voltage across the power source.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: July 11, 2006
    Assignees: Yazaki Corporation, Honda Motor Co., Ltd.
    Inventors: Kazutoshi Oshiro, Yoshihiro Kawamura, Toshihiro Sone, Tadashi Shimada