Patent ID: 6959792

Claim:
A disc brake assembly comprising an anchor bracket, a brake shoe which carries a friction pad and a piston slidably connected to the anchor bracket which is arranged such that upon movement of the piston relative to the anchor bracket the piston acts upon the brake shoe to move the shoe into contact with a brake disc, and in which the assembly further includes a retraction mechanism which is adapted to retract the brake shoe from the disc when the piston is retracted, the retraction mechanism comprising at least one pin secured to one of the friction pad and the anchor bracket and a spring clip fixed relative to the pin which acts between the pin and the other one of the anchor bracket and the friction pad, deformation of the spring clip as the pad is moved towards the disc providing a returning force to pull the friction pad away from the disc when the piston is retracted, and in which the spring clip is fixed in position relative to the pin during normal use but is adapted to slide along the pin in the event that the displacement of the friction pad relative to the anchor bracket due to wear of the friction pad produces a deformation of the spring clip which exceeds a predefined limit.