Patents by Inventor Tohru Oowada

Tohru Oowada 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).

  • Patent number: 8010256
    Abstract: A vehicle collision detector is configured to reliably activate an airbag system at a collision and prevent the airbag system from erroneously operating. The collision detector includes two acceleration sensors disposed at different positions in a vehicle to detect acceleration for collision determination, first and second collision routines in which a determination is made on whether or not a variation in the detected acceleration is caused by a collision, and a final collision routine in which an airbag module is activated when all of results of the first and second collision routines indicate a collision.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: August 30, 2011
    Assignee: Calsonic Kansei Corporation
    Inventor: Tohru Oowada
  • Patent number: 7896392
    Abstract: An airbag deployment controller and a passenger protection device including the same are provided to prevent erroneous (false) operation of an airbag due to noises and quickly deploy the airbag. The passenger protection device determines whether or not to drive an airbag unit, upon determining a detected value of a front acceleration sensor as being over a first collision threshold. Then, when determining to drive the airbag unit, the passenger protection device determines whether or not a detected value of a central acceleration sensor exceeds a second collision threshold. With the detected value being over the second threshold, it generates a driving signal and outputs it to the airbag unit in a final deployment control process. Thereby, the airbag unit operates an inflator to drive an airbag.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: March 1, 2011
    Assignee: Calsonic Kansei Corporation
    Inventors: Tohru Oowada, Mineyuki Ooishi, Ryuichi Asada, Tetsuya Ozawa, Toshinori Yagi
  • Publication number: 20090210117
    Abstract: A vehicle collision detector is configured to reliably activate an airbag system at a collision and prevent the airbag system from erroneously operating. The collision detector includes two acceleration sensors disposed at different positions in a vehicle to detect acceleration for collision determination, first and second collision routines in which a determination is made on whether or not a variation in the detected acceleration is caused by a collision, and a final collision routine in which an airbag module is activated when all of results of the first and second collision routines indicate a collision.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 20, 2009
    Inventor: Tohru Oowada
  • Publication number: 20090167005
    Abstract: An airbag deployment controller and a passenger protection device including the same are provided to prevent erroneous operation of an airbag due to noises and quickly deploy the airbag. The passenger protection device determines whether or not to drive an airbag unit, upon determining a detected value of a front acceleration sensor as being over a first collision threshold. Then, when determining to drive the airbag unit, the passenger protection device determines whether or not a detected value of a central acceleration sensor exceeds a second collision threshold. With the detected value being over the second threshold, it generates a driving signal and outputs it to the airbag unit in a final deployment control process. Thereby, the airbag unit operates an inflator to drive an airbag.
    Type: Application
    Filed: December 22, 2008
    Publication date: July 2, 2009
    Inventors: Tohru Oowada, Mineyuki Ooishi, Ryuichi Asada, Tetsuya Ozawa, Toshinori Yagi