IDLE CLUTCH Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: screw spring 5 is interposed between race 1 and hub 2. The spring is received in screw groove made up as thread 6 on the hub. The profile of the groove and the spring is trapezoidal. The face of the spring abuts against collar 7. When the spring is tensioned under the action of the axial force, its first turn is wedged between the hub and race resulting in transmitting the torque. The average diameter of the spring is equal to the average diameter of the screw groove. EFFECT: improved design. 3 dwg