Patents by Inventor Akihisa Amada

Akihisa Amada 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).

  • Fault detection device for occupant protective systems
    Patent number: 5122780
    Abstract: A fault detection device for an occupant protective system for use in an automotive vehicle, which has a plurality of squibs connected in parallel with each other. A common signal is generated for actuating the squibs to operate the system when the vehicle undergoes deceleration in excess of a predetermined value. A squib circuit has the squibs, at least one resistance connected to the squibs in such a manner that a slight amount of current flows through the squibs, and a unilateral conductive element connected to the squibs and the resistance in such a manner that the slight amount of current flows through the squibs in a predetermined single direction. A fault detection circuit detects a fault in any of the squibs based on a potential at a predetermined location in the squib circuit.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: June 16, 1992
    Assignee: Nippon Seiko Kabushiki Kaisha
    Inventors: Yukinori Midorikawa, Akihisa Amada