Patents Assigned to Grand Slam Archery, Ltd.
  • Patent number: 4669445
    Abstract: Limb/pulley torque in a compound bow is negated by providing a restoring force, as a result of the deflected bow when drawn, comprised of unequal components which balance the torsional force imparted to the bow end by the summation of forces applied by the cable. In accordance with one embodiment, the unequal components are achieved by employing unequal cross sectional areas in the material of the respective two sides about the longitudinal axis of the bow. In another embodiment, the pulley/cam structure and the tieoff element which support the cable are spaced at predetermined distances from the longitudinal axis of the bow to yield respective torque having equal magnitude and opposite direction.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: June 2, 1987
    Assignee: Grand Slam Archery, Ltd.
    Inventor: John Schaar