Patents by Inventor Stephen Maddick

Stephen Maddick 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 pedal crank hanger
    Patent number: 4235488
    Abstract: A bicycle pedal crank hanger including a sleeve on the bicycle frame and having ribs affixed to the interior of the sleeve and spaced from the ends thereof with openings in the ribs so that lugs from an adapter can be inserted through the openings and held in the sleeve by the ribs. Cam surfaces are on the axially inward sides of the ribs, and the lugs engage the cam surface for snugly seating the adapter in the sleeve and the adapter has a flange on the exterior for engaging the outer edge of the sleeve. A bearing and the crank axle are supported in the adapter.
    Type: Grant
    Filed: August 30, 1979
    Date of Patent: November 25, 1980
    Inventor: Stephen Maddick