Patents by Inventor Akihiko Kumazawa

Akihiko Kumazawa 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: 4032202
    Abstract: A bush assembly for vibration control, particularly adapted for use in supporting a suspension arm of an automobile suspension system. The bush assembly includes an inner sleeve which is stationarily supported, and an outer sleeve coaxially encircling the inner sleeve and defining a cylindrical clearance space encircling the inner sleeve. The inner and outer sleeves are both separable into a pair of sleeve sections which meet end to end substantially in a common plane. The clearance space is partly filled with a pair of generally cylindrical, primary impact absorbing members which contact the inner and outer sleeves and are disposed symmetrically with respect to the plane in which the inner and outer sleeves are separable into their respective sections. A generally cylindrical, secondary impact absorbing member is interposed between the two primary impact absorbing members and encircles the inner sleeve.
    Type: Grant
    Filed: March 16, 1976
    Date of Patent: June 28, 1977
    Assignee: Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Masaru Ishikawa, Akihiko Kumazawa