Patents Assigned to Cyclecentric Corporation
  • Variable speed transmission
    Patent number: 3987682
    Abstract: A positive infinitely variable transmission mechanism employs sprags to transmit torque from a driving member to a driven member. By varying the extent by which the driving and driven members depart from a concentric relationship, the sprags impart additional motion, by a toppling action, thus providing different drive ratios. The invention is exemplified by a bicycle transmission arrangement wherein a chain driven input drum is mounted in selectively eccentric driving relationship with an output drum on the axial shaft of a wheel.
    Type: Grant
    Filed: July 11, 1974
    Date of Patent: October 26, 1976
    Assignee: Cyclecentric Corporation
    Inventor: William J. Roantree