Abstract: A wheel hub for vehicles has a built-in brake assembly for stopping and parking the vehicle. A parking piston and a spring assembly of the parking brake are arranged within the ring gear support member, and impact on the brake piston of the multi-plate friction type wet brake, and the ring gear support member. The parking brake has a device for manually de-activating the parking brake from outside the hub. The device includes a screw that overrides spring pressure to move the parking piston away from the brake piston to manually release the parking brake.

Abstract: A non-asbestos friction material is made by molding and curing a composition which includes a fibrous base other than asbestos, a binder, an organic filler, an inorganic filler and an abrasive. The abrasive is composed of one or more inorganic substance selected from among inorganic substances having a Mohs hardness of at least 4.5 and inorganic substances having a Mohs hardness of less than 4.5 and containing at least 50 wt % of a component having a Mohs hardness of at least 4.5. The total amount of organic substances and the total amount of abrasive are in a volumetric ratio of from 1.5/1 to 3.5/1. The friction material thus constituted generates little squeal or other undesirable noise and has a good wear resistance.

Abstract: Articulated pad for disc brakes comprising two or more brake shoes securely attached together by of a hinge joint which permits relative movement of the two brake shoes in the direction of the axis of the hinge, located perpendicular to the contact surfaces between the brake shoes and a brake disc.

Abstract: Method and arrangement for providing a brake device having a rear plate bearing a brake lining. The plate and lining have at least one contact surface, side edges and two end edges. A coefficient of friction of the brake lining varies in a longitudinal direction between the two end edges in such a manner that at least one of the end edges has a lower coefficient of friction than the remaining portion of the brake lining. The brake lining and the rear plate are preferably of one-piece construction.

Abstract: A bicycle brake assembly includes a support member having a support base and a rod extending from a first side of the support base so as to be connected to the brake arms of the brake mechanism. A first brake pad and a second brake pad are respectively connected on a second side of the support base. The first brake pad has a wedge-shaped end defined at a leading end thereof so as to avoid mud from being attached on the first brake pad, and a groove which is defined in the first brake pad in a radial direction of the rotation of a wheel. A plurality of recesses are defined in the second brake pad so as to absorb the noise when braking.

Abstract: An all-terrain board (10, 50) ridden by a rider (18) standing on the board (10, 50) is provided with a braking member which can be engaged by a leg of the rider (18) and moved into braking engagement with a wheel (14, 52). The braking engagement may be directly onto a tyre (15) of the wheel (14). Alternatively, the braking engagement may be indirectly onto a wheel (52) through a linkage connecting the brake (60) to a brake mechanism (74) acting on a rim (56) of the wheel (52).

Abstract: A plate for use in a vehicle brake assembly is made from a non-metallic material. In one example, a wet disc brake assembly plate is made from a phenolic material. In another example, a backing plate for a disc brake or drum brake assembly is made from a non-metallic composite and has a friction pad secured to at least one side.

Abstract: A brake lining of a vehicular brake device is produced by a friction material which has a characteristic that a friction coefficient of the friction material decreases according to an increase of a sliding speed between the brake lining and a rotational member when the sliding speed is greater than or equal to a predetermined speed during the braking operation, and the friction coefficient is substantially constant when the sliding speed is smaller than the predetermined speed.

Abstract: The floating caliper of a disk brake has three bridge arms, which extend over the brake disk, wherein one of the bridge arms, preferably the middle arm (34), is bifurcated into two branches (34a, 34b).

Abstract: The present invention concerns a brake mechanism for a disc brake. The brake mechanism is received in a caliper (4) by means of pivots (3). The brake means comprises a lever (1,31), a cross bar (6,33), a thrust yoke (9,34) and an adjuster mechanism (16). The thrust yoke (9,34) is provided with braces (30,36) going diagonally from the centre of the thrust yoke (9,34) down to the backside of the thrust plate. The structure of the thrust yoke (9,34) means that the force is applied in distinct, separated areas of the brake pads (28). The brake mechanism is held together as one unit which facilitates handling and assembly.

Abstract: A scraper assembly for use with a disc brake including a scraper blade which continually engages with the braking surface of the disc brake to remove dirt, oil and other extraneous materials from the braking surface to increase the coefficient of friction of the braking surface. A weight is provided for biasing the scraper blade with a substantially constant force into engagement with the braking surface. The scraper blade and weight are disposed in a channel which guides and supports the scraper blade into a position in which the blade is engaged with the braking surface.

Abstract: An axially guiding and radially retaining spring (3) for a friction element (15) of a disk brake. The spring (3) includes a throat section (5) mounted by being snap-locking onto a protrusion (7) of a support member (9).

Abstract: A friction engaging device, such as, for example a braking disc and a friction couple, brake disc/pad are disclosed. The friction engaging device is a carbon-ceramic composite comprising a carbon fibre network and a filler comprising silicon carbide. One device comprises, by weight, from 35-50% carbon fibre, 14-30% free carbon, 10-28% silicon carbide, 5-14% silicon and 5-14% silicon oxide. Also disclosed is a method of producing a friction engaging device in which a carbon-carbon composite comprising 10 to 60% by weight of a carbon fiber network and from 40 to 90% by weight free carbon is impregnated with silicon under conditions such that substantially all of the carbon fibre network remains as carbon fiber, and a proportion of the free carbon present in the volume is converted within the volume to silicon carbide by reaction with the silicon.

Abstract: A brake pad comprises a first pad layer made of a first friction material and a second pad layer made of a second friction material different from the first friction material and operatively mounted to the first pad layer The first pad layer has a higher level of friction initially and the second pad layer has a higher level of friction after wearing and the first pad layer is less wcar resistant than the second pad layer. As the first pad layer wears away, the second pad layer commences to wear or “break-in.” Because the wearing is uneven at the interface, portions of the first pad layer continue to offer an immediate and higher level of friction as portions of the second pad layer “break-in” gradually to offer the high level of friction. Eventually, the first pad layer wears away, leaving the second pad layer already “broken-in” for a long-lasting life.

Abstract: A friction surface coating (200) for a friction material of a brake system, especially for a motor vehicle, a truck, a rail vehicle or an aircraft, is composed of 0-30% in weight phenolic resin, 5-95% in weight aluminum oxide, 0-20% in weight silicium oxide, 5-75% in weight bonding agent, 0-10% in weight interlacing agent, 0-50% in weight elastomer and 0-50% in weight filler.

Abstract: A universal friction lining support is affixed on or just under the surface of a friction lining to resist wear and vibrations caused by the road, eliminating the need for a backing plate. The support is configured to fit in the corners of friction linings of various lining assembly sizes. Extensions on the exterior edge of the support locate the friction lining relative to the caliper housing as the piston is engaged. Various attachment features, such as holes or protrusions, can be also added to the support to secure the support to the friction lining.

Abstract: A disk brake and brake pad set that includes a brake disk (2) and two brake pads (4, 6) wherein each brake pad (4, 6) has a carrier plate (8) and a friction lining layer (10, 12) arranged on the carrier plate (8). Each friction lining layer (10, 12) has a central area (22) of identical layer thickness,an area (14, 16; 18, 20) of reduced layer thickness at at least one end of the brake pad (4, 6),and a separating line (24) that defines an edge between the central area (22) and the at least one area (14, 16; 18, 20) of reduced layer thickness. When the two brake pads (4, 6) are arranged opposite each other on either side of the brake disk (2) the areas (14, 16; 18, 20) of reduced layer thickness of the friction lining layers (10, 12) are tangential to the brake disk (2) and the areas (14, 16; 18, 20) of reduced layer thickness of the friction lining layers (10, 12) and the separating lines (24) are arranged asymmetrically relative to each other.

Abstract: A method for treating a surface of a brake rotor to enhance the brake rotor's durability is disclosed. The method includes, positioning the brake rotor adjacent a laser light source, wherein the laser light source produces a laser beam, projecting the laser beam onto a surface of the brake rotor, directing a processing gas toward the surface of the rotor adjacent the laser beam, rotating the rotor at a predefined rotational speed, and repeating the above steps until an entire surface of the rotor is treated with the laser beam.

Abstract: The novel methods, apparatus and reworked rotary braking surface product, for example those exhibited on interior cylindrical braking surfaces of a cast iron brake drum, serve to replace manufacturing defects exhibiting residual tensile stresses and outwardly directed tool marks with smooth compressed braking surfaces in a final manufacturing stage. The plastically deformed surface shape with reduced roughness and surface irregularities furthermore presents improved braking strength above the yield point and approaching the ultimate material strength of the base drum material. An ultrasonic transducer drives individual freely moving impact elements of a set at frequencies up to 55 kHz into the braking surface to effect plastic deformation at surface and sub-surface layers.

Abstract: This invention intends to provide a friction member which is high in an anti-fading character and low in mate attacking character. For such purpose, in a friction member composed of a fiber containing substrate, a bonding agent and a filling agent, an accumulated blow hole rate of blow holes having hole diameter not less than 3.5 &mgr;m is selected to be not larger than 2 volume %, and an accumulated blow hole rate of blow holes having hole diameter from 0 to 3.5 &mgr;m is selected to be not less than 3 volume %.

Abstract: A self adjusting wet brake positioned interior of a transaxle or transmission casing. The self adjusting brake assembly utilizes a brake pad having a cooperating ramp surface which is contacted by a brake cam for brake actuation. The cooperating ramp surface allows the brake mechanism of the current invention to automatically account for brake pad wear and the attendant decrease in brake pad thickness. As the brake pad wears and decreases in thickness, the brake cam progressively contacts ramp surface of the brake pad to effect brake actuation. In one exemplary embodiment, the ramp surface is integral with the brake pad.

Abstract: A backing plate of a disk brake pad is to be produced in an efficient and cost-effective manner and in such a way that the plate offers an increased operating safety. The support surface of the friction lining for improving the transverse strength or shear strength is at least partially provided with an indent area and a large part of the body edges of the indent area are surrounded by the friction lining which is formed on the support surface of the backing plate.

Abstract: Lining devices are suitable for a disk brake having a brake disk, preferably for a motor vehicle, in which the brake disk includes concave brake disk surfaces which cooperate with concave lining surfaces of the lining devices. Each lining device has a lining body with a convex lining surface and a lining support which is constructed as a plate and which has a planar bearing surface for the lining body. For achieving a defined wearing thickness of the lining body, a device for optimizing the friction volume of the lining body is provided between the convex lining surface and the bearing surface of the lining body.

Abstract: A self-servoing disc brake assembly is provided that includes a driven rotor member having a first inner surface with a plurality of first pockets. The driven rotor member also includes a first friction surface spaced from the first inner surface. A movable rotor member is supported on the driven rotor member and is movable relative to the driven rotor member between non-servoed and servoed positions. The friction surfaces are spaced a first distance in the non-servo position, and the friction surfaces are spaced a second distance which is greater than a first distance in the servo position. The movable rotor member includes a second inner surface with a plurality of second pockets adjacent to the first inner surface and a friction surface spaced from the second inner surface. A plurality of balls are arranged between the first and second pockets with at least one of the first and second pockets being ramped.

Abstract: A caliper of a disc brake assembly includes a housing with a cavity configured to receive a disc brake of a disc brake assembly. The cavity includes opposing recesses configured to nest first and second friction pad and plate assemblies on opposite sides of the disc. A drive within the caliper housing advances the first friction pad assembly into contact with the disc along an advancement axis. A retaining structure for the first friction pad and plate assembly includes a pad retention clip attached to the housing within the cavity, the pad retention clip defining an elongate track extending along the advancement axis. A retention tab on a plate of the first friction pad and plate assembly is configured to snap fit with the pad retention clip and to move along the advancement axis within the elongate track as the first friction pad and plate assembly is advanced along the advancement axis by the caliper drive.

Abstract: A brake block for a brake of an open-end spinning rotor includes a take-up for releasable affixing to a brake block support. The brake block has at least two braking surfaces, whereby one braking surface in relation to the supporting surface of the open-end spinning rotor is, in comparison to the other braking surface, set back a certain distance. The result is that, during the first operational application of the brake block, only one braking surface touches the open-end spinning rotor, while the other braking surface comes into effect only after a predetermined amount of wear of the first braking surface.

Abstract: The disc brake cooling system for a vehicle with hydraulic brakes has a sealed circular cooling system employing a piston pump which produces a very rapid flow of brake fluid through the brake lines and calipers constantly during non-braking of the vehicle. After braking, the constant rapid flow of the fluid cools the temperature of the fluid, and hence of the brakes, over the course of the rapid circular motion through the system so as to prevent boiling of the fluid.

Abstract: An actuating piston (10) of a hydraulically and mechanically actuable, spot-type disk brake for motor vehicles, which is disposed in a sealing and displaceable manner in a cylinder bore of the disk brake is provided with an axial-force-transmitting conical surface (18) cooperating with a corresponding conical surface of a mechanical actuating device of the disk brake. To make the actuating piston (10) lighter in weight but nevertheless to withstand greater stress, the part of the actuating piston (10) comprising the axial-force-transmitting conical surface (18) consists of steel and the part of the actuating piston (10) cooperating with the cylinder bore of the disk brake is made of light metal or of plastics material, said components of the actuating piston being constructed as a single-piece composite component.

Abstract: Shoe and lining assemblies for use in disc brakes are disclosed that have centroids of the backing plate halves which are very close to the centroids of the actuator pistons. In this way, the forces from the pistons are evenly distributed across the backing plate surface area to result in better braking operation.

Abstract: A pressure plate for a disc brake pad is provided with ears having increased thickness to ensure retention of the pad in the brake housing when the friction material is worn. The increased thickness is obtained by linearly displacing one or more sections of the ears perpendicular to the plate by stamping, and preferably by fine blanking. This process optimizes the life of the stamping tools and does not require subsequent machining.

Abstract: An opposed-piston type disk brake having a one-piece caliper having increased rigidity. The disk brake has a one-piece caliper having an inner portion formed with a first cylinder. The inner portion is fastened to a stationary part of the vehicle. The caliper further includes an outer portion formed with a second cylinder, and a bridge portion connecting the inner and outer portions together and having an annular inner surface defining a corner. The disk brake further includes pistons each received in one of the first and second cylinders, a disk rotor fastened to a wheel of the vehicle and disposed between the pistons, and friction pads disposed between the disk rotor and the pistons so as to be movable toward and away from the disk rotor.

Abstract: An axially, slidable brake disc system employs leaf springs between a hub of a suspension casting or knuckle to float the brake discs for axial sliding movement, while holding the discs against wobbling, and employs brake pads which are biased by springs to float on a stationary bridge so that the contact between the brake pads and discs is a light random contact thereby resulting in reduced residual torque drag and disc thickness variation. The rotating brake discs will shift axially, slightly from the braking position to the off-brake position with the brake pads urged by their spring forces to keep their pad faces parallel to and slightly spaced from adjacent brake disc surfaces to prevent corner engagement and localized rubbing contact thereby reducing pad wear, residual drag torque and disc thickness variation. The brake force applicator may be mounted at a 12:00 position and in an integral bore in the suspension knuckle to reduce the size, weight, and space envelope of the braking system.

Abstract: A composite casting process for the production of brake elements is described. The brake element has a hub and a flange for fastening to a vehicle wheel, and brake body component bearing a friction surface for interaction with brake jaws for braking The brake body component is made of a first cast iron material having lamellar graphite with a high resistance to thermal shocks, and the hub and the flange are made of a second cast iron material with a higher-grade tensile strength greater than the tensile strength of the first cast iron material. The brake body component is connected to the hub by forming a material union between the hub and the brake body component by casting a melt of one of the cast iron materials on a solid body of the other cast iron material that is placed into a mold cavity. After the casting of the melt forming the material union, which forms a juncture between the cast iron materials, a temperature is provided that is at least 10° C.

Abstract: A mounting bracket apparatus for a disc brake of a vehicle is provided for measuring torque in a disc brake mounting bracket. The invention includes a bracket capable of being secured to a non-rotatable part of a vehicle. The bracket includes first and second caliper bracket abutments and a cross member extending in the direction of the rotational axis of the disc. The cross member joins the first and second caliper bracket abutments at respective first and second corner-shaped portions. A force sensor is located adjacent the first corner-shaped portion of the bracket adapted to sense strain in the first corner-shaped portion.

Abstract: The present specification describes an actuating lever (21) for a disc brake (1, 7), having a cam section (23) with a part cylindrical curved surface (25) and a part cylindrical channel (27) with an elongate cylindrical force transmitting member (29) located therein and being parallel to the longitudinal axis of the said part cylindrical surface (25), and having opposite end regions which are located in recesses (31, 33) formed in the lever (21) at opposite ends of the said channel (27) to thus retain the force transmitting member (29) in position on the lever (21).

Abstract: A stiffening bracket for a brake caliper that includes an aperture. The aperture has a diagonal length. The bracket includes a support having a first end and a second end. The bracket also includes a first extension attached to the first end and a second extension attached to the second end of the support. A length measured from the first extension to the second extension of the bracket is less than or equal to the diagonal length of the aperture.

Abstract: A disc brake comprises an operating mechanism operable to move friction material pads into contact with a disc. The operating mechanism comprises a support body located on one side of the disc, a cylinder defined by the support body, and a piston in the cylinder. The operating mechanism also comprises a guidance member for the pads. The guidance member projects from the support body past the disc and supports an abutment on which one of said pads is mounted. The guidance member is mounted on the support body by means of a plurality of bolts which extend through bores in the guidance member to said abutment. The bolts take the load during application of the brake.

Abstract: A brake caliper has a caliper bridge and two legs that are arranged at right angles to the caliper bridge. A housing having a bore for a brake piston is mounted on one leg. The caliper bridge has at least one hollow chamber inside, which is delimited on all sides by supporting walls. Even though the brake caliper exhibits considerable flectional strength it is lightweight.

Abstract: A brake (10) for a servo-motor (96) includes a housing (28) having first and second housing portions (30, 32) and in which an input (12) is rotatably mounted by a bearing (60). The pilot (98) of the servo-motor (96) is received in an enlarged recess (40) while the shaft (21) passes through an axial opening (38) and is secured in an axial bore (20) of the input (12) by a coupling (106) to align the brake (10) with the servo-motor (96). The brake (10) is secured to the servo-motor (96) by screws (108) which extend through elongated, radially elongated slots (46). A wedge shaped friction facing (82) is biased to engage an interface surface (26) of the input (12) and a friction surface portion (70) of the housing (28) by a spring (94) extending between a radial surface (92) and the first housing portion (30). The friction facing (82) is moved to a disengaged position by a piston (100) slideable under fluid pressure in a chamber (62) of the second housing portion (32).

Abstract: The brake lining (100) for disk brakes comprises a carrier plate (10) and a friction material block (20) fixed thereon made of a pressed friction material, the friction material block (20) being fixed positively and/or nonpositively on the carrier plate (10), the carrier plate (10) being made of a hard amorphous plastic rigid up to the decomposition temperature which is composed of spatially close meshed interlaced macromolecules with a high mechanical strength like for example a duroplastic, the material of the carrier plate (10) gripping into the carrier plate free surface (20a) of the friction material block (20) and overlapping the side walls (21, 22, 23) of the friction material block (20) placed on the carrier plate (10) and being welded with the material of the friction material block (20).

Abstract: A disc brake assembly is disclosed of the kind in which a friction pad (3) is applied to one face of a rotatable disc, in which the friction pad is provided with one or more protrusions (8, 9) which project from the leading radial edge in a circumferential direction, the radial thickness (r1) of the projection being small relative to the total radial thickness (R) of the pad, the arrangement being such that in the event of tilting of the pad assembly with respect to the disc, where the brake is in the off position, contact between the protrusion and the disc prevents contact between the rest of the pad and the disc. Preferably, one protrusion is provided at each corner of the pad. This helps to reduce wear of the disc producing judder vibration during braking by reducing disc thickness variation.

Abstract: A brake pad for a bicycle includes a backing plate having a front surface, a rear surface, and a friction pad disposed on the front surface of the backing plate. The rear surface of the backing plate includes a groove to facilitate heat dissipation caused by friction between the friction pad and the brake disc.

Abstract: A damping plate consists of at least one metal plate and has a pressure-transferring surface that applies offset pressure to a damping plate. The pressure-transferring surface has at least two areas with different degrees of resilience, and it can be placed at least in sections on a pressure-applying unit starting at least at a set pressure distributed over the entire pressure surface.

Abstract: A caliper disk brake for steel mill cranes includes a pair of armatures having an electromagnetic coil and a spring interposed between them to operate in a clamshell fashion. The spring urges the armatures apart, while actuation of the coil urges the armatures together. Each of a pair of caliper arms is pivotally connected to a respective one of the armatures at one end thereof, and has a pressure plate pivotally maintained at an opposite end. The pressure plates are maintained in juxtaposition to wear pads which are axially movable in apertures maintained in a pair of stationary plates. A disk, adapted for interconnection with the shaft of a steel mill crane hoist motor is positioned between the plates and wear pads.

Abstract: In the pushing anchor type disc brake device, reduction of noise and prevention of uneven wear can be accomplished especially in the brake device in which brake torque of the outer pad is transmitted via the caliper. In the disc brake device, the caliper is guided by a pair of guide pins composed of a main pin and a sub-pin. In order to transmit the brake torque of the outer pad via the caliper and the main pin, the back plate of the outer pad and the caliper are engaged with each other by engaging a protrusion with a recess, wherein the engagement is conducted at a plurality of portions in the circumferential direction of the rotor, so that the brake torque can be transmitted from the outer pad to the caliper. The main pin is arranged on the rotor run-out side, so that a pushing anchor structure can be formed. A pair of guide pins and guide holes of the support member which engage with the pair of guide pins stride the rotor and extend exceeding a facing section where the rotor faces the outer pad.

Abstract: An abrasive coating is provided on the friction surface of a braking element, such as, but not limited to a disc brake pad. The abrasive coating is capable of removing a protective coating from a rotor during the initial breaking in period of the brake pad. Additionally, the abrasive coating is capable of polishing away surface irregularities on an improperly resurfaced rotor. The abrasive coating is characterized in that no noise is generated during the establishment of the burnish relationship between the brake pad and the rotor that is attributable to the abrasive coating. The abrasive coating is preferably in the form of two parallel stripes substantially centered on the brake pad away from the leading and trailing edges and extending from one lateral edge to the other lateral edge such that the stripes are substantially perpendicular to the direction of rotation of the rotor.