Patents by Inventor Nobuhiro Hirazawa

Nobuhiro Hirazawa 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: 5009404
    Abstract: A fluid-filled elastic mount including a first and a second support member; an elastic body for elastically connecting the first and second support members; a pressure-receiving chamber filled with a non-compressible fluid and receiving a vibrational load applied to the mount; an equilibrium chamber filled with the fluid, at least partially defined by a flexible diaphragm and having a variable volume; a restricted passage for fluid communication between the two chambers; and a movable member movable by a predetermined distance between the two chambers so as to absorb a fluid-pressure difference between the two chambers. The movable member is formed of a rigid material and the restricted passage is provided in the movable member.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: April 23, 1991
    Assignee: Tokai Rubber Industries, Ltd.
    Inventor: Nobuhiro Hirazawa