Patents by Inventor William L. Shaffer

William L. Shaffer 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).

  • Adjustable skateboard ramp
    Patent number: 4129916
    Abstract: An adjustable ramp includes a ramp member supported in an adjustable suspensory frame. Adjustment of the suspensory frame changes the angle of incidence of the ramp member to the supporting surface on which the ramp is located. A resilient ramp member is provided in one embodiment which is maintained in curvilinear, flexed attitude on the supporting frame by the moveable connections of said ramp member to said suspensory frame.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: December 19, 1978
    Inventors: Todd R. Schlesinger, William L. Shaffer
  • Building with integral ramps
    Patent number: D245923
    Type: Grant
    Filed: March 19, 1976
    Date of Patent: September 27, 1977
    Inventor: William L. Shaffer