Patents by Inventor M. Yves Dignat

M. Yves Dignat 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).

  • Wheelchair with improved suspension
    Patent number: 6412804
    Abstract: The invention relates to a wheelchair whose suspension is flexible and designed to absorb and filter vibrations. The rear train comprises a triangle (1) attached to a chassis beam, a pivot pin (15) that carries the wheel R and a strut (6) with bearing on a central shock absorber (10). The small front wheels are mounted on a double system (21, 26) that filter the vibrations.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: July 2, 2002
    Inventor: M. Yves Dignat