Abstract: A disc brake includes a pair of friction elements which are movable by a hydraulic actuator and a caliper into engagement with the disc to effectuate braking. A torque member movably supports the caliper. The hydraulic actuator includes a piston cup and an anti-rattle spring is disposed within the piston cup and releasably engaged with one of the pair of friction elements to eliminate noise generated between the one friction element and the caliper, the torque member, or the piston cup. In particular, the anti-rattle spring comprises a split ring having a polygonal circumference. The split ring is contracted radially for insertion into the piston cup and sides of the polygonal surface are expanded radially to receive the one friction element. A pair of tabs on the split ring releasably engages the one friction element to retain the same in engagement with the piston cup.

Abstract: A brake wear indicator is connected to a backing plate and extends around the periphery thereof to engage a disc, when a friction element is worn to a predetermined dimension. The brake wear indicator comprises a generally U-shaped spring clip that terminates in a pair of prongs that cooperate with the disc to generate an audible warning. A bend in the spring clip permits the backing plate to abut a piston cup without interference by the spring clip for urging the backing plate and friction element toward the disc. Either prong on the spring clip is engageable with the disc to generate an audible warning to a motor vehicle operator.

Abstract: A disc brake for an automotive vehicle is disclosed in which the inner friction element is provided with a pair of arms extending from opposite ends thereof. The arms are provided with grooves (or projections) which are adapted to slidably engage axially extending splines (or grooves) which are provided on the bridge portion of the caliper so that the inner friction element is guided for sliding movement in a direction parallel to the axis of rotation of the rotor. A gap is defined between the ends of the splines and the inwardly extending portion of the caliper to permit insertion of the arms into the gap and movement of the inner friction pad onto the splines when the brake is assembled. The outer friction element is then installed on the inwardly extending portion of the caliper and encloses a sufficient portion of the gap to prevent the inner friction element from escaping. A pair of pins slidably mount the caliper to a non-rotating portion of the vehicle, such as the spindle housing.

Abstract: A disc brake is disclosed which includes a rotatable disc, a pair of friction elements disposed opposite friction faces of the disc, and a caliper movable axially with respect to the disc to urge the friction element into braking engagement with the friction faces of the disc when a brake application is effected. The caliper includes a fluid motor portion which includes a pair of circumferentially spaced arms which traverse the periphery of the rotor. The caliper further includes a stamped collar member which encircles the friction elements and the fluid motor portion and includes a circumferentially spaced section which traverse the periphery of the discs. Fastening means secure each of the arms to the portion of the collar disposed adjacent the friction element engaging the side of the disc opposite to the side of the disc on which the fluid motor portion is mounted.