Patents by Inventor Mituru Andoh

Mituru Andoh 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).

  • Coated coil spring
    Patent number: 4763882
    Abstract: A coated coil spring wrapped in a coating member prepared from a soft synthetic resin foam, wherein the coating members of the respective coil spring turns constituting at least the effective region of the coil spring are provided with a helical clearance; and the width of said clearance accounts for 0.15 to 0.50 times the width of the adjacent coil spring turns.
    Type: Grant
    Filed: November 20, 1986
    Date of Patent: August 16, 1988
    Assignee: NHK Spring Co., Ltd.
    Inventors: Masakazu Nishiyama, Chiharu Umetsu, Akira Kebukawa, Mituru Andoh