A friction drive arrangement includes a plurality of interleaved rotor and stator discs. An end stator disc is adjacent a reaction plate containing a plurality of cylindrical, stepped bores defining spring receptacles opening toward the end stator disc and pin guide holes opening in an opposite direction. Each receptacle contains a coil compression spring located between a bottom of the receptacle and a spring retention pin having a first end section reciprocably received in the guide hole and having a second end section defined by a large diameter foot located between an end of the spring and the end stator disc, with the foot being configured for directly engaging the end stator disc. A tool is used to retract the pins and associated springs into the associated receptacles so as to retain the springs during assembly. Excess retraction of the pins is prevented for preventing over-compression of the springs.

A pad liner for a brake apparatus may include: a pad liner body disposed between a plurality of pin members; pad liner support parts extending from two opposing ends of the pad liner body, respectively, and configured to support the plurality of pin members, respectively; a pad liner return part connected to the pad liner body so as to press a first brake pad, and brought into contact with the first brake pad so as to provide an elastic restoring force when a brake pedal is released, such that the first brake pad is returned to original state; and a pad liner extension part connected to the pad liner body, and brought into contact with a second brake pad so as to press the second brake pad.

A pad for a brake caliper for a disc brake of a vehicle having a caliper body and a brake disc adapted to abut against a braking band of the brake disc. The pad has at least one plate and one friction material supported by the plate. The plate has a first side and a second side arranged at opposite tangential ends of the plate. The plate also has at least a first side ear and at least a second side ear. The two ears are each provided with slots. The two slots are adapted to accommodate corresponding associable pins mounted to the caliper body with clearance.

A disc brake includes a brake pad, a retaining spring, and a retaining bracket. The retaining bracket pretensions the retaining spring radially inwardly relative to a rotation axis of a brake against the brake pad. A smallest radial distance (D) of the retaining spring from the brake pad in a region in which the retaining bracket overlaps the retaining spring in a radial direction is greater than a smallest radial distance (d) of the retaining bracket from the brake pad in a region in which the retaining bracket overlaps the brake pad in the radial direction.

The invention relates to a disc brake caliper (100) comprising: a caliper body (10) placed astride the disc of a disc brake, fitted with a pair of half-bodies (11, 12) connected to each other by means of a first and a second end bridge (20, 21) adapted to delimit a central aperture (22) of the caliper body (10), and by means of a first (13) and a second (14) connection bridge placed astride the disc of the disc brake at such a central aperture (22). The caliper body (10) houses brake pads (2, 3) supported by suspension pins for pads (4, 4′, 5, 5′) arranged in an axial direction (X-X) of the caliper body; said pads have a first side (42) facing the disc of the disc brake connected to an opposite second side (44) by means of a corner (43) facing said central aperture (22). Such a caliper (100) further comprises a first (50) and a second (51) cross-shaped leaf springs to influence the pads (2, 3) in the axial direction (X- X), wherein such a first (50)/second (51) spring is adapted to act between the pads (2, 3) and between the first/second connection bridge (13, 14) and the first/second end bridge (20, 21) of the half-bodies (11, 12). The first (50)/second (51) leaf spring comprises a bow-shaped longitudinal beam (61) having a shaped first end (73) adapted to be removably constrained to the first/second connection bridge (13, 14) and an opposite shaped second end (74) adapted to be removably constrained to the first/second end bridge (20, 21). Wherein each of such first (50) and second (51) leaf springs comprises: a cross beam (62) connected to the longitudinal beam (61) at a central base portion (64) of the spring, to influence the pads (2, 3) at suspension portions of the pads (2, 3) towards the pins(4, 4′, 5, 5′), such a cross beam (62) includes wings (81, 82) projecting from the central base portion (64) of the spring in the axial direction (X-X); each of such wings (81, 82) has a surface (7) facing the disc of the disc brake suitable for resting on the corner (43) of the respective pad (2, 3); each of said wings (81, 82) comprising first means for influencing the pads (8, 83, 84) to influence the second side (44) of the pad (2, 3) by keeping it away from an inner wall (90) of the half-bodies (11, 12); each of such wings (81, 82) comprises second means for influencing

A caliper disk brake of a vehicle with a brake disk, a brake caliper, a brake anchor plate, a force transmission element guided and supported in a shaft of the brake caliper or of the brake anchor plate, a holding-down spring for holding down the force transmission element, and a holding-down device held and supported on the caliper by a holding device, pretensions the holding-down spring radially against the force transmission device and pretensions the holding-down spring tangentially in the direction of rotation against the force transmission device during forwards travel. The holding device has a center line parallel to the axis of rotation of the brake disk. The tangential pre-tensioning is at least partially attributed to the dimensions of the holding-down device, as measured in the tangential direction from the center line, being larger at least in sections on the disk exit side than on the disk entry side.

An electromechanical brake booster, the second half housing being able to be centered on the first half housing by engaging a first mounting pin protruding from the first centering opening into the first insertion opening and by engaging a second mounting pin protruding from the second centering opening into the second insertion opening. A method for producing an electromechanical brake booster for a motor vehicle is also described.

A caliper guide assembly and a method of manufacture. The guide assembly may include a guide pin, a guide bore arranged to receive the guide pin and permit relative axial sliding thereof, a bush arranged to define at least part of the guide bore, and a sensor arrangement configured to provide an output indicative of a state of wear of the bush.

A caliper guide assembly for a heavy vehicle disc brake. The caliper guide assembly may include a wear sensor arranged to detect the position of a guide pin in relation to a guide bore. The guide pin and a guide surface may have different cross sectional profiles to define at least one void therebetween. The wear sensor may be at least partially accommodated within the void.

A brake system that includes a brake caliper comprising an inboard side and an outboard side, the inboard side of the brake caliper includes one or more brake pistons and the outboard side of the brake caliper comprises one or more brake pistons, and a brake pad comprising a first pad section and a second pad section. During a service brake apply, both of the first pad section and the second pad section are moved against a braking surface to create a clamping force. During a parking brake apply, only one of the first pad section and the second pad section is moved against the braking surface to create a clamping force. The first pad section comprises a friction material having a coefficient of friction that is different than a coefficient of friction of the second pad section.