US Patent 6957724 Vehicle disk brake

A disk-brake unit which has an unusual ability to operate safely as well as a simple construction and which is intended to be fitted in vehicles, comprises a caliper body extending astride a braking disk, at least one pair of pads facing the disk on opposite sides and restrained on the caliper body by suspension on a pin, each pad having a support plate for a friction lining, and stop region formed in the plates and facing respective complementary stop section formed in the caliper body for restraining the pads in a direction tangential to the disk, the unit further comprising between the pin and the at least one pair of pads, a single element for constantly maintaining the suspension of the pads on the pin and simultaneously constantly urging each pad both towards the complementary stop section and away from the braking disk.