Patents by Inventor Ronald Ralph Knapp

Ronald Ralph Knapp 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).

  • Bicycle
    Patent number: 3931990
    Abstract: A bicycle is provided having front and rear frames pivotally connected together near the pedal bearings and resiliently coupled by a shock absorber, in which the rear frame has a pair of inclined structural members extending on either side of the seat-supporting tube of the front frame and holding a rear end of the shock absorber at a position directly in front of the seat-supporting tube.
    Type: Grant
    Filed: September 16, 1974
    Date of Patent: January 13, 1976
    Assignee: Yamaha International Corporation
    Inventor: Ronald Ralph Knapp