DISK PARKING AND SERVICE BRAKE HAVING SERVO ACTION ON PARKING BRAKE ONLY

摘要

A sliding caliper type disk brake assembly including a directly actuated brake pad that is movably supported relative to the caliper assembly and an indirectly actuated brake pad that is fixed relative to the caliper assembly. A hydraulic piston and mechanical actuator are provided for moving the directly actuated brake pad into engagement with the associated rotor braking surface and for generating a reactive force to slide the caliper and actuate the indirectly actuated brake pad. Interposed between the hydraulic piston and the directly actuated brake pad are a pair of transversely movable members having inclined surfaces for generating a servo or self-energizing force that is effective only upon mechanical actuation.