Patents by Inventor Toshihiko Aihara

Toshihiko Aihara 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: 4936555
    Abstract: A bush-type vibration damping device having an inner cylinder and an outer cylinder arranged in such a way that their axes extend in parallel with each other, and an elastic member is interposed between the inner and outer cylinders. A pressure receiving chamber, a first sub-liquid chamber and a second sub-liquid chamber are provided at one side of the inner cylinder. The first sub-liquid chamber has a not smaller resistance to expansion by pressure than the second sub-liquid chamber. The first and second sub-liquid chambers are connected to the pressure receiving liquid chamber through first and second communication passages, respectively. The second communication passage produces a not smaller resistance to flowing liquid than the first communication passage.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: June 26, 1990
    Assignees: Bridgestone Corporation, Nissan Motor Co., Ltd.
    Inventors: Tatsuro Ishiyama, Takao Ushijima, Toshiyuki Tabata, Toshihiko Aihara, Hajime Takeguchi