Patents by Inventor Doyle Darch

Doyle Darch 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: 4165089
    Abstract: A skateboard having an adjustable feature to vary board flexibility to accommodate the performance requirements of various maneuvers executed by the individual using the skateboard. Variable board flexibility is accomplished by the use of a strengthening member mounted on the bottom of the skateboard by an adjusting mechanism which varies the connection between the strengthening member and the skateboard. The skateboard also incorporates integrally cast wheel assembly mounting brackets located on the bottom of the respective ends of the skateboard. In one embodiment of the variable flexion skateboard adjustment dials are positioned at each end of the strengthening member to set the desired flexibility in the skateboard.
    Type: Grant
    Filed: December 27, 1977
    Date of Patent: August 21, 1979
    Inventors: Myron G. Urdea, Doyle Darch, John N. Urdea