Disk-brake device with shape memory damping means

摘要

A disk-brake or disk-clutch device comprises: a supporting body (2); a pad (4) made of friction material; a pad-holder element (7), on which the pad (4) is mounted and which is mobile with respect to the supporting body (2); and a piston-operated actuator (8), comprising a piston (8), which is mobile with respect to the supporting body (2) for pushing the pad (4) axially against a disk. Associated to the piston (8) are damping means designed to reduce vibrations and consequent noise during operation of the device. Said damping means comprise at least one shape-memory element (11).