Abstract: A shock absorber (13) is provided between the anchor (9) and the ends (2b, 3b) of the brake shoes (2, 3) facing the anchor (9) to reduce the impact noise between the brake shoe and the anchor.

Abstract: A torque member has thread holes for attaching itself to a vehicle body and L-shaped rails for supporting inner and outer brake pads in the circumferential direction of a disc rotor, so as to allow the brake pads to be displaced in the axial direction of the disc rotor. Those of the L-shaped rails which face one another in the axial direction of the disc rotor are cross-linked by two bridge parts at their outer ends as viewed in the radial direction of the disc rotor. A corresponding caliper bridge part fits between the two bridge parts. The L-shaped rails facing in the circumferential direction of the disc rotor are connected together at their inner ends as viewed in the radial direction of the disc rotor by beams.

Abstract: A mounting assembly for a disc brake pad is disclosed. The disc brake pad has a first end portion provided with a finger engaged in a slot of a reaction block to partially restrain the disc brake pad. The disc brake pad has a substantially unrestrained second end portion which is cantilevered from the first end portion. Braking forces are reacted virtually exclusively against the reaction block which is located externally of and separated from the disc brake caliper assembly.

Abstract: A disk brake includes a carrier secured to a fixed part of a vehicle, a rotor fixed to a vehicle wheel, a caliper slidably mounted to the carrier, a pair of inboard and outboard pad assemblies for operative braking coaction with the rotor, and a pair of pad springs adapted to slidably support the inboard and outboard pad assemblies. The carrier includes an inboard member, an outboard member, and a pair of opposite side members each having a pair of opposite guide grooves. The pad springs each include a bridge portion, and a pair of legs depending from opposite ends of the bridge portion. The legs each include a pair of pad guides fit into the guide grooves.

Abstract: The drum brake has a brake support plate which is divided into a supporting body (10) and a back plate (22). The supporting body (10) has a central ring (12) for centering and securing to an axle housing of a vehicle, and an abutment carrier (16) against which brake shoes (38) can bear in a circumferential direction. The brake shoes (38) can bear against the back plate (22) in an axial direction. At the supporting body (10) a mounting means (20) for a wheel speed sensor (46) and a rest (56) for a jacket (58) of a brake cable (60) are additionally formed.

Abstract: A disk brake for a motor vehicle having a caliper (1), a carrier (2) which fixed to the vehicle and a pad (41) located between a tip (10) on the caliper (1) and a disk (D). The pad (41) being fitted with a spring (5) which holds the pad against the tip (10) of the caliper (1). The spring (5) bears elastically on inclined surfaces of the tip (10) of the caliper (1) and is subjected to a torque (C--C) which urges the spring (5) to rotate about an axis (X) and to continually urge the spring (5) against the carrier (2).

Abstract: A pad clip for use in a disc brake in which a concave and convex fitting structure is formed in a braking support portion between each of friction pads disposed opposite to a rotor, and a support member for bearing braking force from the friction pads. The pad clip is installed between projections of the friction pads and anchor concave grooved portions of a support member in the concave and convex fitting portions to thereby support the friction pads respectively. In the pad clip, plate spring portions for urging the friction pads in the radially outward direction of the rotor are formed in one of opposite portions in the radial direction of the rotor, which are the portions following U-shaped portions in the concave and convex fitting portions. Guide projecting portions sidewise spread out are formed at side edges of the plate spring portions, and the lower edge portions of the projections are engaged with the guide projecting portions respectively so that the plate spring portions can be pushed and spread.

Abstract: This invention relates to a vehicle disk-brake and spring (40) through which a friction member (10) is attached to a torque-withstanding member (24). A support plate (12) is received via its circumferential ends (16, 18), which is anchored, and slides on the torque-withstanding member (24). At least one circumferential end (18) of the support plate (12) comprises of a rounded surface (22) interacting with the anchor and sliding with the rounded surface (32) defined on the torque-withstanding member (24). One of the rounded surfaces (32) is concave, and the other rounded surface (22) is convex with the radius of curvature of the convex surface (22) being less than the radius of curvature of the concave surface (32).

Abstract: An inner arm for receiving a brake torque applied to an inner pad when a car is running forwardly includes a reinforcing rib, in the portion thereof situated near the opposite side to the side where a torque receiving portion of the inner arm is located. The reinforcing rib projects inwardly from a mounting portion 31A of the inner arm 31A to the slightly upper portion of the torque receive portion 31A of the inner arm 31A in such a manner that the amount of projection of a portion thereof situated near the torque receive portion is greater than the amount of projection of a portion thereof situated near the mounting portion.

Abstract: A system includes rigid non-metal washers separating a caliper lever from the bridge, a rigid non-metal bridge bushing separating a shaft of a bridge pin from the bridge and a rigid non-metal lever bushing separating the bridge pin from the lever. The bridge bushing and lever bushing absorb shock and transmit forces between the bridge pin, bridge and lever during the initial phase of the actuation of the brake caliper assembly. A non-metal spring is provided between the bridge pin and the lever to retard vibration of the bridge pin relative to the lever when the brake caliper assembly is not activated. The spring preferably includes at least one ring between the bridge pin and the lever and is in a recess of the lever bushing. The ring is pre-loaded by the bridge pin.

Abstract: A vehicle disc brake caliper assembly which includes an improved structure for supporting a caliper relative to an associated anchor plate. The disc brake caliper assembly includes an anchor plate including first and second spaced apart guide rails, and a caliper slidably supported on pins secured to the anchor plate. A pair of friction pads are carried by the guide rails and are adapted to be disposed on opposite axial sides of an associated rotor. The friction pads define a pair of notched first ends and a pair of notched second ends. An actuator is carried by the caliper for selectively moving the friction pads into frictional engagement with the rotor. The caliper is provided with a lift stop which is located above each of the guide rails and which functions to provide additional support for the caliper relative to the anchor plate.

Abstract: A shim structure for sound dampening brake squeal noise in a disc brake apparatus, when installed on the piston and/or caliper engaging surface of a steel backing plate of the friction pad structure, is composed of a sheet of aluminum and a continuous membrane of a high temperature acrylic adhesive on one surface only of the sheet of aluminum. The sheet of aluminum has a thickness large enough to provide, in combination with the membrane of high temperature adhesive, effective sound dampening of the brake squeal noise. In a specific embodiment of the invention, the silhouette periphery of the shim structure is shaped to closely match the silhouettes of a number of related but differently configured friction pad structures.

Abstract: A novel supporting device for the friction pads of a disk brake is provided in which a frame straddling a disk rotating in tandem with the wheel is fixed to a non-rotating member of the vehicle, and a caliper slidable in the axial direction of the rotating disk is set in the fixed frame. One end of each of two friction pads are interlocked with the frame such that the trailing ends of the pads slide in the axial direction of the rotating disk. The supporting device incorporates a thin plate set in the interlocking area between the fixed frame and the friction pads wherein the thin plate is molded into a pair of sliding members corresponding in structure to the interlock between the fixed frame and the friction pads.

Abstract: A brake mechanism for selectively stopping and permitting rotation of a shaft journaled in a motor frame, the brake mechanism comprising: a brake hub secured to the shaft for rotation therewith, the hub including a plurality of first splines each having a first width in the circumferential direction of the hub and at least one second spline having a second width in the circumferential direction of the hub and greater than the first width, and a friction disk surrounding the hub for rotation therewith, the friction disk including a pair of opposed friction surfaces and having therein an aperture extending between the friction surfaces for receiving the hub, the aperture including spline recesses for receiving the hub splines and disk splines which mate with the hub splines and which provide for rotation of the friction disk with the hub; and brake disk engagement structure mounted for movement toward and away from the friction disk.

Abstract: A disc brake assembly includes a disc rotor, a pair of brake pads, a mounting member supporting at least one of the brake pads so as to be able to slide in the parallel direction with respect to a rotational shaft of the disc rotor, a caliper member slidably supported on the mounting member so as to be movable in an axial direction of the disc rotor and pressing each of the brake pads against faces of the disc rotor, respectively and at least one first pad clip interposed between the mounting member which is positioned at the entry side in the rotational direction of the disc rotor in the forward movement of the vehicle and the brake pad which is slidably supported on the mounting.

Abstract: A slack adjuster adapted for use in railroad truck car braking mechanisms. The slack adjuster compensates for wear of the truck car brake shoes by automatically adjusting the length of travel of the brake cylinder piston rod as the shoes wear. The slack adjuster of this invention includes a linkage connected between the air cylinder piston rod and one end of the slack adjuster. The invention also includes a bolster mounted linkage stabilizer which interconnects the other end of the slack adjuster, the brake lever, and the piston rod to eliminate oscillation of the piston rod during operation.

Abstract: A floating-caliper disc brake is described of a type having brake shoes (3, 4) which are positioned on either side of a brake disc (2) and with a brake caliper (1) which straddles the brake shoes (3, 4) and the edge of said brake disc (2), which brake caliper is axially slidingly supported on a brake carrier (5). A brake piston is mounted in the brake caliper (10) adjacent one brake shoe (4). A spring element (12) is disposed extending between the brake piston and a facing surface of the brake caliper adjacent the other brake shoe and acts to retract each brake shoe to create a clearance with the brake disc. The spring element is elastically and plastically deformable by an actuating stroke of the brake piston (10), the elastic deformability being limited to an actuating stroke which corresponds to the brake clearance of both brake shoes (3, 4), the plastic deformation compensating brake lining wear.

Abstract: A drum brake assembly has brake shoes 2 and 3 within a rotatable drum 1. The shoes 2 and 3 are displaceable to effect braking by an hydraulic ram 7 and free ends 9 of the shoes react against an abutment 10. This reaction is effected through a layer of viscoelastic damping material and metal plate laminate 110 which may be carried by either the brake shoes or the abutment 10. The viscoelastic layer may be bonded between steel plates and secured by a spring clip to either the brake shoe or the abutment 10. Alternatively the viscoelastic layer may be bonded to the abutment 10. The laminate 110 can be accommodated within a recess in the abutment 10. The provision of the viscoelastic layers through which the brake shoes react on the abutment 10 alleviates the development of noise or squeal during use of the brake assembly.

Abstract: On the caliper (10) of a spot-type disc brake a hold-down spring (40) of sheet metal is supported with a supporting region (42) formed thereon near a brake pad (28); from there it extends in cantilever manner beyond the brake disc (18). The hold-down spring (40) comprises two pairs of spring legs (50, 52) which are separated from each other by a first pair of axial slots (60) and in the relaxed state lie at least approximately in a common plane and extend beyond the brake disc (18). A first pair of the spring legs (50) presses against the brake pad (34) remote from the support region (42). A second pair of the spring legs (52) is separated by a second pair of axial slots (64) from a third spring leg (54) in such a manner that the second pair (52) and the third spring leg (54) are joined only at their ends remote from the support region (42) without being bent over. The third spring leg (54) presses with its other end onto the brake pad (28) adjacent the support region (42).

Abstract: A resilient guide for the brake housing of a floating caliper spot-type disc brake for automotive vehicles in which the brake carrier is integrated into the steering knuckle. A resilient spring for a brake housing (1) of a floating caliper spot-type disc brake with a brake carrier integrated into the steering knuckle is provided.The spring arrangement comprises at least one spring (2, 7) secured to the brake housing (1) at predetermined points (A, B). The spring (2, 7) in its unloaded condition, is premounted on brake housing (1) and after assembly of the brake housing (1) is loaded on the manufacturing belt to preload the brake housing (1) against the brake carrier arms (6). Loading of the spring (2) is effected such that the center is moved toward the wheel axle, and is fixed to projections (4) of the brake housing (1) and is then supported, with extensions (5), to arms (6) of the brake carrier. The entire mounting operation advantageously can be performed by an industrial robot.

Abstract: In order to reduce friction and wear in an air brake system wherein a caliper moves on upper and lower slide pins and an air chamber is suspended from the caliper by a bracket a portion of the weight of the air chamber is suspended from the upper slide pin by an elastic member placed between the upper slide pin and the bracket at an angle providing a component of force supporting the air chamber and a component of force opposite to the direction of the movement of the caliper when applying a braking force.

Abstract: A disc brake assembly with a pivotable caliper is disclosed. The disc brake is a dual pin type, floating caliper disc brake wherein the caliper can be pivoted about one of the pins to facilitate servicing thereof while the caliper remains supported by that pin. Also disclosed is a novel outboard brake shoe assembly including spring clips having a retaining surface for engaging a stop provided on the outboard caliper leg to restrict radial movement of the caliper. The outboard brake shoe assembly can further comprise at least one projection for engaging the outboard caliper leg to restrain undesired circumferential movement of the caliper. The spring clips may further be configured to bias the brake shoe assembly against the caliper to prevent rattle of the brake shoe assembly.

Abstract: The brake pad (10) comprises a lining (8), a lining support (11) and a spring (15) fastened at (17) to the support (11) near one edge of the support. The two free ends of this spring are shaped so that each forms a mechanism for attachment (23, 24, 25; 23', 24', 25') of the pads. These two free ends grip two adjacent bearing surfaces formed on the caliper of the disc brake equipped with this pad. The invention is used for the preassembly of pads in a disc brake incorporated in the stub axle of the vehicle wheel.

Abstract: The invention concerns a disc brake with a sliding calliper (10) incorporating two shafts for guiding and holding two friction components (20, 24) which are capable of being actuated by a brake actuator (18), and incorporating a spring for noise suppression (32) consisting of a metal leaf in the general shape of a cross incorporating two bearing arms formed on each side of a central axial portion (34), the arms bearing radially against the shafts, the central portion cooperating in bearing with external peripheral portions of the friction components (20, 24). Of the ends (46, 54) of the central portion (34), one end (46) incorporates an extension (44) which enters with a predetermined radial clearance into a hole (48) formed facing it in the calliper (10).

Abstract: The attachment device incorporates a bearing zone (78) and a projection (80) formed in the web (16) of a shoe of a drum brake. A portion (68) of the component (46) to be attached to the shoe is retained in a working position between the bearing zone (78) and the projection (80) by a spring (82).

Abstract: A pad spring for use in a disc brake including a stationary member adapted to be secured to a non-rotatable part of a vehicle at one side of a rotatable disc and having two circumferentially spaced leg portions which straddle the outer circumference of the disc and mount slidably thereon a pair of friction pads, and a caliper slidably mounted on the stationary member. The pad spring has a base portion contacting with and extending along a side surface of the leg portion of the stationary member, a retaining portion extending from the base portion and retainingly engaging with the leg portion, a pressing portion extending from the base portion and resiliently engaging the radially outer surface of the friction pads, and a restricting portion extending from the base portion and to a position radially outwards of the pressing portion and being normally spaced therefrom by a predetermined distance.

Abstract: A sliding caliper disc brake includes a caliper slidably mounted on a fixed torque-taking member to urge one friction pad onto one side of a rotatable disc and having a fluid actuated piston which urges the other friction pad onto the other side of the rotatable disc. The caliper is connected to the torque member by a pin so as to permit sliding of the caliper in an axial direction of the rotatable disc and also pivoting of the caliper with respect to the torque member. The pivoting of the caliper in the inward direction is restrained by an extension which is formed on the caliper and is in contact with the torque member while the pivoting of the caliper in the outward direction is restrained by a link plate which is oscillatingly disposed on one friction pad and is in contact with the caliper.

Abstract: A drum brake assembly includes a pair of brake shoes which are slidably mounted on a fixed support. An elastic retention member is mounted on each of the shoes before they are assembled onto the fixed support. Each of the retention members includes a locking portion which engages the web of the brake shoes, and a pair of arm portions which extend from the locking portions and which engage the web of the brake shoe in such a way as to releasably maintain the locking portion engaged with the web of the brake shoe. When the brake shoes are assembled on the torque member, a portion of the torque member is provided with a sloped edge that engages the locking portion to release the latter as the brake shoes are assembled onto the fixed support, so that the retaining member then exerts a biasing force between the torque member and the brake shoes.

Abstract: A disc brake assembly (10) includes a rotor (12) having a pair of friction faces (14, 16) and a pair of friction elements (18, 20) disposed adjacent the friction faces. A caliper (32) is slidably mounted on a support member (22) by mounting mechanism (40). Mounting mechanism (40) includes a camming member (66) supported by the support member (22) and slidably engaged by the caliper (32) and a torsion spring (82) which yieldably rotates the camming member (66) into camming engagement with the caliper (32) and support member (22).

Abstract: A disc brake including a stationary carrier, a caliper slidably mounted on the carrier and straddling the outer circumference of a rotatable disc and having inner and outer leg portions, inner and outer friction pads slidably mounted on the carrier respectively, and a brake actuator incorporated in the inner leg portion of the caliper. First and second springs are mounted on the outer friction pad with the central portions thereof being secured to the outer friction pad respectively. The first spring has arm portions resiliently engaging with the outer leg portion of the caliper to press the outer friction pad toward the outer leg portion generally in the direction of the axis of the disc. The opposite end portions of the second spring are resiliently inserted into gaps formed between the circumferentially opposite ends of the outer friction pad and the carrier.

Abstract: A disc brake including a rotatable disc, a bracket having a pair of limbs and firmly attachable to a vehicle body portion in straddling relation to the disc, and a brake caliper mounted on the bracket, supporting a pair of friction pads on the opposite sides of the disc and having an actuating mechanism operative to press the friction pads against the opposite faces of the disc. The bracket limbs are formed thereon with torque-bearing surfaces which face the adjacent, trailing end faces of the respective friction pads which surfaces are covered with a single protecting plate. The bracket is formed along the top edges of the torque-bearing surfaces with a detent shoulder and in these surfaces at points downwardly spaced a substantial distance from the top edges thereof with a pair of detent holes. The protecting plate is formed on its back with at least one upper detent lug engageable on the detent shoulder and a pair of lower detent lugs engageable in the detent holes.

Abstract: A floating caliper type disc brake comprising a pair of friction pads, a caliper adapted to be mounted on a stationary member to slide thereon in the direction of the axis of a rotatable disc, each of the friction pads having on opposite ends in the direction of the circumference of the disc projections for mounting slidably the friction pads on the stationary member, and a guide plate adapted to be interposed between the stationary member and each of projections of friction pads in mounting the friction pads on the stationary member.

Abstract: A shoe drum brake of the type including a pair of shoes, a first having a cylindrical portion, a second strut having external screw thread portion telescopically received in the cylindrical portion, an adjusting nut threadingly engaging with the screw thread portion of the second strut and abutting with the first strut, and an automatic shoe clearance adjusting mechanism associated with a hand brake lever, the mechanism comprises a supporting shaft pivotally connecting the hand brake lever with one end of either of the first and second struts, and an adjust lever for rotating the adjusting nut in association with the movement of the hand brake lever. A spring is provided to bias the automatic shoe clearance adjusting mechanism toward a backing plate.

Abstract: A disc brake assembly includes a caliper assembly which is operable to bias a pair of friction elements into engagement with a rotor. At least one resilient member cooperates with the caliper assembly and the pair of friction elements to releasably couple the latter to the caliper assembly. In addition, the one resilient member cooperates with the caliper assembly and one of the pair of friction elements to define an interlocking fit preventing movement of the caliper assembly in a radial direction relative to the rotor.

Abstract: A disc brake of a type having a caliper member which is guided for axial movement on a carrier member relative to a disc is provided with a pair of freely rotatable pins which extend through axially directed bores in the caliper member. A pair of coil springs are connected to the opposite ends of each pin with the opposite ends of the coil springs being anchored to the carrier member so that the caliper is freely slidable on the pins in spite of any deformation of the carrier member. The caliper member is restrained from excessive movement by a pair of retainer members overlying the opposite ends of the caliper member and which are secured to the opposite ends of the carrier member.

Abstract: An improved pivotal mounting assembly, preferably for use with a centrifugal clutch for pivotally mounting the clutch shoes, has a plastic insert which forms either a sector-like portion of a usual cylindrical-shaped, metallic pivot pin, or a portion of the clutch shoe which forms a pivot pin receiving opening. The plastic insert will have an outer convex surface when forming a part of a cylindrical pivot pin or will have a concave surface when forming a part of the clutch shoe. Preferably the convex and concave surfaces will have arcuate lengths of approximately 120.degree.. The plastic insert provides a low-friction pivotal bearing surface for the clutch shoe, which will absorb many of the forces and stresses exerted on the pivot assembly upon coupling engagement of the clutch shoes with a driven drum. The supporting metal areas of the pivot pin or clutch shoe adjacent the plastic strip provides the mechanical strength for the strip.

Abstract: A drum brake assembly includes a torque member which supports a hydraulic actuator. The hydraulic actuator is engageable with a pair of brake shoes and is operable to move the pair of brake shoes into a braking position. The torque member comprises a central portion which attaches to an axle assembly and a plurality of arms extending radially outward from the central portion. In the preferred embodiment the plurality of arms cooperate with the central portion to substantially form a Y-shaped member. One of the arms substantially forms the hydraulic actuator to integrally form the latter with the one arm. The other arms are provided with slots to direct the movement of the pair of brake shoes and a resilient spring within the slots opposes axial movement of the pair of brake shoes.

Abstract: A drum brake assembly includes a backing plate for supporting a pair of brake shoes and a hydraulic actuator which cooperates with the pair of brake shoes to urge the latter into a braking position. A parking lever is pivotally mounted on one of the brake shoes and a strut connects the parking lever with the other brake shoe such that rotation of the parking lever when the parking brake is applied urges the pair of brake shoes into a braking position. In order to connect the strut to the other brake shoe while at the same time eliminating any rattle between the pair of brake shoes and the struts, a spring clip releasably connects with the other brake shoe and resiliently engages the strut to bias the latter toward the one brake shoe. The spring clip is substantially U-shaped with at least one opening for receiving the strut and for maintaining the strut in juxtaposition to the other brake shoe.

Abstract: In a railway freight car an elastomeric boot is attached to the entrance and/or exit of a hollow sill or hollow structural member through which a brake rod passes. The brake rod passes through a brake rod opening in the boot in entering and/or leaving the sill or structural member, and the boot engages the brake rod sufficiently to substantially prevent moisture from passing through the boot and into the sill or structural member.