EXPANDING CLUTCH Russian patent published in 1996 - IPC

FIELD: mechanical engineering. SUBSTANCE: driving clutch member 1 and driven clutch member 2 are axially alined. Centrifugal weights made up as blocks 3 provided with friction linings 4 are mounted for permitting radial spaces with respect clutch member 2 and coupled with clutch member 1 by way of plate springs 5. Parts of spring 5 at the site of securing to clutch member 1 are at an acute angle to straight segments of springs 5 and conjugated with them by way of radiused transitions. When clutch member 1 accelerates in the clockwise direction, blocks 3 are locked at the initial position by tangential inertia forces. After the completion of the acceleration, these forces disappear. As a result, blocks 3 move in the direction of the inner surface of clutch member 2. In so doing, the radiused transitions of spring increase. EFFECT: enhanced smoothness and reliability. 1 dwg