Patents by Inventor Philip Tomkinson

Philip Tomkinson 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).

  • Racing bicycle having a continuously variable traction drive
    Patent number: 4735430
    Abstract: A low-drag bicycle comprising an elongated, two piece, generally tubular frame of elliptical cross-section extending between the front and rear wheels wherein the cyclist assumes a recumbent position over the frame facing down and powers the cycle by means of a pedal arrangement directly connected to and concentrically arranged with the rear wheel axle, which axle constitutes the input shaft of a continuously variable compound traction drive transmission for driving the rear wheel hub.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: April 5, 1988
    Inventor: Philip Tomkinson
  • Bicycle design
    Patent number: 4647060
    Abstract: A low-drag bicycle comprising an elongated, two piece, generally tubular frame of elliptical cross-section extending between the front and rear wheels wherein the cyclist assumes a recumbent position over the frame facing down and powers the cycle by means of a pedal arrangement and transmission directly connected to and concentrically arranged with the rear wheel axle.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: March 3, 1987
    Inventor: Philip Tomkinson