Patent ID: 6626269
Filing Date: 2003-09-30
Classification: F16D

Abstract:
A disc brake caliper assembly comprising:a housing having a bore; a disc and a pad engagable therewith; a piston disposed within the bore movable between an applied position in which it causes the pad to engage the disc, a retracted position in which the pad is disengaged from the disc and a knock-back position beyond the retracted position, the 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 the piston and carrying a stop, the stop being movable by the linkage; an actuator responsive to an end of brake activation signal to cause the linkage to engage the stop with the piston when the piston is retracted from its applied position to its retracted position so as to prevent the piston from moving from the normal retracted position to the knock-back position, the actuator being ineffective to move the piston, through the linkage and stop, from the retracted position to the applied position; and a brake pedal activated sensor for providing the end of brake activation signal.