Patent ID: 6481543
Filing Date: 2002-11-19
Classification: F16D

Abstract:
A disc brake caliper assembly comprising:a housing having a bore; a piston disposed within said bore movable between applied, retracted and knock-back positions, said piston being activatable by hydraulic pressure to move from the retracted position to the applied position; a retracting seal effective in the absence of the hydraulic pressure to move the piston from the applied position to the retracted position; a linkage adjacent to said piston; an actuator moving said linkage from a first position to a second position in which it abuts the piston when the piston is in the retracted position and maintaining the actuator in the second position to prevent said piston from moving from said normal retracted position to said knock-back position, wherein said actuator is an electric motor for rotatingly driving said linkage.