Patents by Inventor Derek A. Corris

Derek A. Corris 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).

  • Toy vehicle with spring drive mechanism
    Patent number: 4241534
    Abstract: A toy vehicle having a spring drive mechanism coupled through first and second unidirectional slip clutch members to the drive wheels thereof, the slip clutches including gear members for winding the spring through a first gear ratio while pushing the vehicle in the reverse direction on a surface, and for propelling the vehicle through a second gear ratio upon release of the vehicle, each of the actions utilizing only one of the slip clutch members.
    Type: Grant
    Filed: February 14, 1979
    Date of Patent: December 30, 1980
    Assignee: Mattel, Inc.
    Inventors: Ake L. Larsson, Gunther E. Gronwold, Derek A. Corris