Patents by Inventor Chikashi Tsuzuki

Chikashi Tsuzuki 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).

  • Collapsible wheel chock
    Patent number: 4140206
    Abstract: A collapsible wheel chock constructed entirely of plastics material is comprised of a wheel engaging element and a ground engaging element detachably secured to each other for pivotal movement relative to each other. A support element is detachably secured to the opposite end of the wheel engaging element for pivotal movement relative thereto with the opposite end detachably engaged with the base member for slidable movement relative thereto to allow the wheel chock to be erected and collapsed.
    Type: Grant
    Filed: September 14, 1977
    Date of Patent: February 20, 1979
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Shinichiro Yamazaki, Chikashi Tsuzuki