Patent ID: 7276004
Filing Date: 2007-10-02
Classification: F16H

Abstract:
1. A sliding centrifugal drive weight for use in an automatic continuous variable transmission which has a rotary shaft with a drive pulley including a movable drive pulley half, a ramp plate and a stationary drive pulley half, a driven pulley, an endless V-belt having one end rotatably fitted around a groove confined by the drive pulley and the other end rotatably fitted around a groove confined by the driven pulley, and a plurality of centrifugal drive weights mounted between the ramp plate and ramps of the movable drive pulley half ,whereby in a rotational movement of the drive pulley, the centrifugal drive weights are adapted to move radially outward along the ramp of the movable drive pulley half upon a centrifugal force acting thereon while the movable drive pulley half moves axially toward the stationary drive pulley half so as to change sizes of the grooves of the drive pulley and the driven pulley and an effective diameter of the V-belt in each of the drive pulley and the driven pulley is changed, thereby effecting a gearshifting; said sliding centrifugal drive weight comprising