Abstract: A method of securing a shim against a first side surface of a backing plate, wherein the shim and the backing plate together comprise a subassembly for use in a brake assembly, the method comprises the steps of: stamping the first side surface of the backing plate so as to form a first extending pin and at least a second extending pin spaced apart from the first extending pin, each of the pins being integrally connected to the backing plate, and stamping the shim so as to form a first aperture and at least a second aperture spaced apart from the first aperture whereby a respective edge circumscribes each aperture, wherein the position of the at least two extending pins is based at least in part on the position of the first and second apertures or the position of the first and second apertures is based at least in part on the position of the at least two extending pins; coupling the shim against the first side surface of the backing plate and aligning the first aperture with the first pin and aligning the seco

Abstract: The invention relates to the damping of mechanical vibrations of components in apparatuses. In particular, the invention relates to the damping of components of brakes. For this purpose, at least one piezoelectric element is provided, which is in engagement with the vibrating component and electrically excited in such a way that it damps vibrations of the component.

Abstract: The invention relates to a suspension for a rail brake on a bogie of a rail vehicle. A passive lifting device is provided which acts upon the rail brake according to the activation state thereof in such a way that said brake can be displaced between a lowered braking position and a lifted release position. In the release position, damping elements act between stoppers of the rail brake and the carriers of the bogie in such a way that transverse forces are reliably damped by virtue of vibrations or impact loads for instance. In the braking position, the lateral play required in said position is provided. The spring characteristics of the damping elements are configured in such a way that the two requirements can be met.

Abstract: An assembled vehicle brake disk has a basically rotationally symmetrical friction ring which is fastened by way of several linking points in a rigid or floating manner to a basically rotationally symmetrical hub part. At least two distances between respectively adjacent linking points, which distances follow one another in the circumferential direction, differ from one another, in which case, viewed in their entirety, the linking points are arranged in a non-uniformly distributed manner along the circumference. Preferably, an uneven number of linking points are provided which may be arranged to be very asymmetrically distributed along the circumference. The number of linking points may be in the order of between 5 and 15, a smaller number being provided per circumferential segment with respect to lower-frequency noise radiations, and a higher number being provided with respect to higher-frequency noise radiations.

Abstract: The present invention concerns a disc brake mainly for road vehicles. The disc brake comprises a fixed caliper straddling one or more brake discs, one or more thrust plates and a number of brake pads. The brake discs are received in a non-rotating but axially moveable relationship on a rotating hub. The brake pads are guided axially moveable in the caliper taking up the load of the brake pads.

Abstract: A backing plate for a friction assembly includes a body having a first surface and a second surface. On or more retention members are provided on the first surface for engaging a friction material mounted thereon. Each retention member has a depressed portion and multiple spiral wings extending upwardly in a spiral orientation from the first surface.

Abstract: Disc brake, in particular for a motor vehicle, comprising two pads (11) each intended to cooperate with a lateral face of the disc to be braked under the action of means of control comprising a piston (14) mounted so that it is axially mobile, parallel to the disc axis, in a caliper adapted to straddle the disc, said piston (14) being adapted to cooperate according to a support zone with the pad (11) facing it, said pad (11) being constituted by a metal support (18) carrying a friction lining, said metal support (18) being symmetrical with respect to a transverse plane (S) called plane of symmetry, which is perpendicular to it and which is parallel to the disc axis, the piston axis (14) being displaced with respect to said plane of symmetry (S) by being at a transverse distance from the latter, an anti-noise shim (21) being arranged between the piston (14) and the metal support (18) and provided with an opening (22) arranged at right angles with the piston support zone (14): the anti-noise shim (21) carries a

Abstract: A resilient device for minimizing noise in a splined connection includes a mounting portion and two flanges bent from the mounting portion to attach to a structure. The flanges are substantially parallel and spaced apart from each other by the mounting portion to form a substantially U-shaped profile. An arm is bent in a second direction from the mounting to lie adjacent to the mounting portion. The arm has a wavy portion having a pitch that allows it to engage with splines in the splined connection to prevent rattling in the connection without having to reduce the clearance between the splines.

Abstract: A disc brake includes a disc rotor, a pad having a backing plate, a press member for pressing the pad toward the disc rotor, and an anti-squeal layered shim attached to the backing plate and disposed between the press member and the backing plate of the pad. The layered shim includes a pad-side shim and a press-member-side shim. A depression is provided on a surface of the pad-side shim, the surface facing toward the press member. A projection is provided on the press-member-side shim, the projection being fitted into the depression in order to restrict relative movement between the pad-side shim and the press-member-side shim along a pressing surface.

Abstract: In a disc brake, an anti-squeal shim plate is disposed between the backing plate of each pad and a corresponding press member which presses the pad toward a disc rotor. The press member presses the pad against the disc rotor via the anti-squeal shim plate in order to generate braking force. A plurality of dimples are provided on the anti-squeal shim plate in order to limit to a specific area a press contact area between the backing plate and the press member during braking with very small pressing force.

Abstract: Guide pins for retaining a caliper in an anchor of a disc brake assembly. The guide pins are characterized by a cylindrical body having a first end and a second end with a first diameter section that extends from the first end separated by a shoulder from a second diameter section that extends from the second end. The cylindrical body has a threaded axial bore that extends from a face on the second end toward the first end. A bolt has a shaft with threads thereon which mate with the threaded axial bore in the cylindrical body. A bushing is concentrically located on the shaft and in a corresponding axial opening in an ear that extends from the anchor. Torque applied to the bolt acts on and brings the bushing into engagement with the face on the second end of the cylindrical body however as the bushing has a greater length than the width of the axial opening of the ear, a desired gap is developed between a head on the bolt, the second end and the ear.

Abstract: A vehicle has a park brake system, which has set a set operational state for holding the vehicle in a parked position, and a released operational state in which the vehicle may be driven. The park brake system includes a park brake actuator and connecting linkages which are driven by an operator of the vehicle in an engaging direction in order to effect the set operational state of the park brake system. The park brake system further includes a return spring engaged to the connecting linkages in such a manner to drive them and the park brake actuator in a disengaging direction and to ensure maintenance of the released operational state of the park brake system after it is effected by an operator. The park brake system also includes an impact-reduction energy absorber such as a spring, damper, or some combination thereof for absorbing some of the energy transferred to the connecting linkages when the return spring drives the connecting linkages and the park brake actuator in their disengaging directions.

Abstract: A pair of engaging protrusions provided in a support member and a pair of engaging grooves provided in a back plate of a pad are engaged with each other, and the pad is capable of being displaced only in the axial direction of a rotor. Each engaging protrusion is composed of a rising section and a bent section which is bent at the tip end of the rising section at a right angle. The rising section composes a brake torque bearing section, and the bent section composes a rotation preventing section of the pad. The pad is prevented from rattling with respect to the support member by first and second pad clips.

Abstract: A liquid-sealed vibration-proof device capable of avoiding leakage of liquid upon press fitting of an outer cylinder is provided. An intermediate ring interposed between the outer cylinder and an antivibratory base is formed at its outer circumferential surface with two projecting streaks, the one on liquid chambers side being formed with cutouts. When the outer cylinder is press fitted to an attachment opening of a vehicle body, the liquid confined in a space enclosed between both projecting streaks can escape to the liquid chambers, so that liquid never leaks outside.

Abstract: A multi-disk brake and wheel assembly (11) includes a cantilevered wheel axle (13) with a wheel (19) journalled for rotation about the axle and a plurality of brake disks (31, 33, 35, 37) radially surrounding the axle. Alternate ones of the brake disks are angularly fixed to the wheel for rotation wherewith and the disk stack is axially confined between an end disk (41) at one axial end and a pressure plate (43) at the opposite axial end of stack. An axially asymmetrical vibration-reducing torque tube (39) radially surrounds the axle and axially spans the brake disks with intervening ones of the brake disks angularly fixed to the torque tube. The torque tube is cantilevered at one end from a stationary member and has the end disk fixed thereto at the other end thereby axially sandwiching the brake disks between the end disk and pressure plate.

Abstract: This invention related to a multi-layered damped anchor shim adapted for use in a drum brake assembly. The anchor shim includes an inner surface and an outer surface which is adapted to contact the second ends of the brake shoes. The anchor shim includes a damping material applied to the inner surface thereof so as to be disposed between adjacent contacting areas of the outer surface of the inner retainer plate and the inner surface of the anchor shim to thereby reduce the transmission of noise from the brake shoes through the abutment assembly to the backing plate.

Abstract: A vibration damping shim structure is provided, which not only can sufficiently exert vibration damping effect in a wide range of temperatures, but also can prevent a squeal phenomenon particularly in low temperatures.

Abstract: A disc brake uses retraction springs arranged in directions transverse to the direction of movement of the brake pads. The springs thus apply both tangential and radial forces to the brake pads to both retract the pads and to reduce rattle. In the preferred embodiment, the springs are S-shaped and attached to the pad backing plates by insertion of the ends of the springs into holes in the backing plates.

Abstract: A vibration damping shim structure is provided, which not only can sufficiently exert vibration damping effect in a wide range of temperatures, but also can prevent a squeal phenomenon particularly in low temperatures. A rubber coating layer a1 is formed on one side of a first constraint plate a2 of a metallic plate and a second constraint plate a4 is stuck to the other side of the first constraint plate a2 with a adhesive layer a3 placed in-between. The ratio of the thickness of the first constraint plate a2 to a sum total of the thickness of the back plate b1 forming a disc brake B and the second constraint plate a4 is taken as within 0.1 to 0.2, and the second constraint plate a4 is used so as to be brought into contact with the back plate b1.

Abstract: The invention relates to a vibration damper for a hydraulic vehicle brake system with a diaphragm facing the hydraulic fluid that transmits the braking force and being fastened to a carrier device by its edge in such manner that it is able to move toward the carrier device or away from it at least slightly in its center area. Based on the invention, the hollow chamber between the diaphragm and the carrier device, which is required for the movement of the diaphragm, has been largely evacuated. The stiffness of the diaphragm is preferably selected in such a manner that the diaphragm rests completely against the surface of the carrier device facing toward it at a pressure of the hydraulic fluid in the range of 25 bar and more. In some areas, the diaphragm can have a wave-shape cross-sectional design as can the surface of the carrier device facing toward the diaphragm.

Abstract: A vibration damper is provided for a hydraulic vehicle brake system with a diaphragm facing the hydraulic fluid that transmits the braking force and being fastened to a carrier device by its edge in such manner that it is able to move toward the carrier device or away from it at least slightly in its center area. The hollow chamber between the diaphragm and the carrier device, which is required for the movement of the diaphragm, has been largely evacuated. The stiffness of the diaphragm is preferably selected in such a manner that the diaphragm rests completely against the surface of the carrier device facing toward it at a pressure of the hydraulic fluid in the range of 25 bar and more. In some areas, the diaphragm can have a wave-shape cross-sectional design as can the surface of the carrier device facing toward the diaphragm.

Abstract: A vibration damper for a hydraulic motor vehicle brake installation is provided with a membrane facing the hydraulic medium transferring the braking force which, with its edge region, is finally attached to a carrier element functioning especially as a brake piston in the brake saddle of a motor vehicle brake. The membranes can move at least slightly toward the carrier element or away from this in its central region, whereby the membrane together with a further membrane form a membrane unit. The two membranes are arranged basically one over the other, lie tightly one upon the other, and enclose between themselves a hollow space in the central region within this edge region. Preferably, the membrane facing the carrier element is set at a distance apart from the fastening section of the membrane unit and from the surface of the carrier element so that the space between the surface of the carrier element and the facing membrane stands in fluid connection with the hydraulic medium.

Abstract: In order to prevent squealing of a disk brake, the disk brake has a brake disk with friction rings having locally weakening section moduli which detune corresponding to the natural oscillation mode. As a result, the natural oscillation mode of the brake disk is changed to such an extent that brake squealing is avoided.

Abstract: A multi disc brake assembly employing a combination fixed rotor and a plurality of axially moving floating rotors. The fixed rotor is attached to and rotates in combination with a wheel hub. The plurality of floating rotors are slidingly attached to the fixed rotor and a plurality of stationary friction surfaces are interleaved therebetween. The stationary friction surfaces are keyed to the caliper housing allowing for axial movement. The floating rotors are connected to the fixed rotor by pins, or are axially slidingly keyed at the inner radial periphery to splines on the fixed rotor.

Abstract: A disc brake including a pair of friction plates arranged coaxially in a parallel, spaced-apart relationship and a plurality of vanes extending between the pair of friction plates, each of said vanes having a proximal end, a distal end and a mid-portion extending between the proximal end and the distal end, at least one of the distal end and the proximal end of at least half the vanes having a first cross-sectional area, the mid-portion having a second cross-sectional area, the first cross-sectional area being substantially greater than the second cross-sectional area. The vanes can include a T-shaped portion adjacent the distal end. The vanes can include an hourglass shaped portion. The vanes may taper from the distal end to the proximal end. The vanes can include a thicker cross-section adjacent a peripheral portion of the rotor.

Abstract: A disc brake including a pair of friction plates arranged coaxially in a parallel, spaced-apart relationship and a plurality of vanes extending between the pair of friction plates, each of said vanes having a proximal end, a distal end and a mid-portion extending between the proximal end and the distal end, the proximal ends of a plurality of the vanes having a first width, the mid-portion having a second width, the first width being substantially greater than the second width. The vanes can include a T-shaped portion adjacent the proximal end.

Abstract: The present invention relates to a spot-type disc brake (1) with a brake housing (3) straddling a brake disc, with at least one brake lining (5, 6) that is arranged in the brake housing (3) so as to be slidable in the actuating direction and cooperates tribologically with the brake disc upon brake application, with at least one actuating device (4) arranged in the brake housing (3) to apply an actuating force to the brake lining (5), and with a spring assembly for the active adjustment of a clearance between the brake lining (5) and the brake disc after brake application. To simplify the configuration of the spring assembly, the spring assembly comprises exactly one spring (8, 18, 25, 31, 33) which is secured detachably in the spot-type disc brake (1) and is supported on the brake lining (5), on the one hand, and on the brake housing (3), on the other hand.

Abstract: In order to prevent squealing of a disk brake, the disk brake has a brake disk with friction rings having locally weakening section moduli which detune corresponding to the natural oscillation mode. As a result, the natural oscillation mode of the brake disk is changed to such an extent that brake squealing is avoided.

Abstract: A silencer structure is mounted on a friction pad of a disc brake assembly by retaining pins which extend through the shim structure and into the backing plate for preventing dislodging of the shim structure in service. The force of the rotating action of the brake disc is at a 90° angle to the retaining pin. This 90° angle provides effective resistance to any shifting or rotation of the shim structure with respect to the backing plate during actuation of a disc brake apparatus. The retaining pin has an outer surface which is disposed substantially flush with the outer surface of the shim structure. The outer surface of the retaining pin therefore does not interfere with the positioning or functioning of an actuator piston structure, caliper structure or other disc brake structure. The flush mounting allows the system of the present invention to be used for any caliper design.

Abstract: In order to prevent squealing of a disk brake, the disk brake has a brake disk with friction rings having locally weakening section moduli which detune corresponding to the natural oscillation mode. As a result, the natural oscillation mode of the brake disk is changed to such an extent that brake squealing is avoided.

Abstract: An electromagnetically actuated brake is provided comprising a magnetic body, which can energized electromagnetically to produce a magnetic force, and a brake rotor which is mounted on a shaft, in particular the drive shaft of an electric motor, in a rotationally stable manner, so that the shaft can be braked. A spring-loaded armature plate is mounted on the shaft and is movable axially parallel to the long axis of the shaft by the magnetic force produced in the magnetic body against the force of its spring loading whereby in a braked state the armature plate is apposed to the braking surface of the brake rotor. Disposed between the armature plate and the magnetic body or between the armature plate and the brake rotor are first and second dampers to attenuate oscillations of the brake. The first and second damper are located adjacent one another in the axial direction of the shaft and each comprises a material different from that of the other.

Abstract: The invention relates to the damping of mechanical vibrations of components in apparatuses. In particular, the invention relates to the damping of components of brakes. For this purpose, at least one piezoelectric element is provided, which is in engagement with the vibrating component and electrically excited in such a way that it damps vibrations of the component.

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 brake squeal attenuator for use with aircraft wheel brake assemblies. The attenuator includes a housing having a piston member and a weight disposed therein. The piston member and weight are biased by a spring disposed within the housing. The housing includes a neck portion which is in fluid communication with the hydraulic actuators of the brake assembly with which the attenuator is being used. The piston thus is biased on one side thereof by the biasing member and on an opposite side thereof by the hydraulic fluid pressure acting thereon. During braking, when torsional oscillations occur in the brake assembly which would otherwise cause objectionable brake squeal to occur, the entire housing of the attenuator, which is fixed to the housing of the wheel brake assembly, moves in accordance with the torsional oscillations which occur. The weight associated with the piston member causes movement of the piston member to lag behind movement of the attenuator housing as the attenuator begins oscillating.

Abstract: The present invention discloses a brake lining which, in order to reduce and eliminate noises, has a sliding metal sheet in addition to the classical lining parts such as friction lining, lining support plate and damping plate. Further, the damping plate has bores which are filled with grease. The purpose of the grease is, primarily, to lubricate the surface directed to the sliding metal sheet and the damping plate so that both surfaces can slide on each other without friction.

Abstract: The present invention relates to a retaining spring for a housing of a spot-type disc brake, especially an integrated disc brake for motor vehicles, in which a brake carrier of the disc brake is integrated in the steering knuckle of the vehicle, the retaining spring including at least one spring ann extending essentially in circumferential direction and clamping the housing and the brake carrier in relation to each other. In order to install the housing retaining spring in a pre-assembled state on the brake housing without further processing and to fix the outer lining in the foreseen position the present invention teaches attaching the housing retaining spring on a part of the disc brake, especially on the outer brake lining in a swiveling manner.

Abstract: A brake assembly includes a rotor and at least one backplate supporting a brake pad for frictionally engaging the rotor for braking. A sheet metal plate is operatively connected to the back plate. The sheet metal plate has a groove cut therethrough to form at least one tuning fork member. A damping material is engaged with the at least one tuning fork member for damping energy associated with vibrations of the tuning fork member, thereby sound-dampening brake squeal noise.

Abstract: A friction member is provided which can suppress judder without impairing wear resistance. The friction member is prepared by impregnating or coating base fibers with a composition containing rubber and/or resin to prepare the yarn for the friction member, preshaping the yarn into an annular form, and then thermally molding the preshaped yarn. The friction member has porosity in a range from about 10% to about 20%.

Abstract: A silencer shim structure is mounted on a friction pad of a disc brake assembly by retaining pins which extend through the shim structure and into the backing plate for preventing dislodging of the shim structure in service. The force of the rotating action of the brake disc is at a 90° angle to the retaining pin. This 90° angle provides effective resistance to any shifting or rotation of the shim structure with respect to the backing plate during actuation of a disc brake apparatus. The retaining pin has an outer surface which is disposed substantially flush with the outer surface of the shim structure. The outer surface of the retaining pin therefore does not interfere with the positioning or functioning of an actuator piston structure, caliper structure or other disc brake structure. The flush mounting allows the system of the present invention to be used for any caliper design.

Abstract: A disk for a disk brake which achieves an unusual vibration-damping capability and consequently a more comfortable ride comprises a braking ring and a bell having respective flanges clamped together with nut-and-bolt assemblies, as well as a plate clamped between the flanges by the nut-and-bolt assemblies.

Abstract: A disk brake includes a brake disk which is surrounded by a caliper carrying lining devices. On the side of the lining device facing a brake lining surface, the brake disk has a concave brake disk surface. In order to at least partially reduce the noise emitted occurring during slow-down braking, the concavity of the brake disk surface and the convexity of the brake lining surface are constructed such that a noise-reducing form closure occurs.

Abstract: A squeak preventing shim for a disk brake for an automobile has a squeak preventing effect, even if no lubricant is used, and also prevents decreased durability due to buckling, flow, etc. A shim construction is formed with a plurality of grooves or recesses in rubber layers 2 disposed on two surfaces of a metal plate in a rubber coated member. Owing to these grooves or recesses, apparent transversal elastic modulus of the rubber layers is lowered and a squeak preventing effect due to vibration in a parallel direction to the shim can be obtained, even if no lubricant is used. Further, since longitudinal elastic modulus does not vary much, the shim construction is durable.

Abstract: In a disc brake of the type in which the outer pad is directly supported by the pawls 1a and 1b of the caliper 1 in a manner that the protrusions 5b and 5c of the back plate 5a of the outer pad 5 are put in engagement with the engaging parts 1c and 1d of the pawls of the caliper 1, the protrusions 5b and 5c of the back plate 5a of the outer pad 5 and the engaging parts 1c and 1d of the pawls of the caliper are located on the radially inner side of the surface pressure center C of the outer pad 5.

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 pad for disk brakes for controlling the revolution of revolving parts of vehicles and machines that has improved heat resistivity in an underlayer material interposed between a friction material and a backing plate to be used under heavy-load conditions in particular. The underlayer material includes linear or branched plastic having a melting temperature of 200° C. or higher at normal pressure. The underlayer material may comprise not only a single layer but also a plurality of layers having different composition to enhance the effectiveness.

Abstract: A disk brake in which a cylinder bore of a caliper is decentered toward the exit side in the rotational direction of a disk with respect to friction pads, and claw portions of the caliper are also decentered toward the exit side with respect to the friction pads. The entrance-side and exit-side claw portions have approximately the same wall thickness in the circumferential direction of the disk. When the brake is activated, the claw portions exhibit approximately the same rigidity so that the surface pressure of each claw portion pressing the outer friction pad can is kept uniform, and non-uniform.

Abstract: A fixed caliper brake wherein, the material rigidity is reduced at appropriate locations on the brake housing and of the brake linings in order to create partial systems at the brake which can vibrate in a damped manner. With respect to weight, these steps are undertaken extensively in a neutral manner and they reduce the vibrations of the entire brake assembly resulting in a reduction in braking noises.

Abstract: A brake shoe for disc brakes comprises a pad back plate which, on a first face thereof, is provided with a friction pad and, on a second face thereof, has a projection to which a retaining spring is fixed to prevent rotation of the retaining spring relative to the pad back plate. The projection extends through a non-circular opening in the retaining spring and comes into intimate contact with the opening when deformed radially by the application of an axial force to the projection to produce a form-lock which prevents the retaining spring from rotating relative to the pad back plate.

Abstract: An anti-squeal shim comprises a metal plate and a compound layer applied to at least one side of the metal plate. The compound includes a nonmetal fiber other than asbestos, an elastomer, a filler and small pieces of cork. The anti-squeal shim is disposed between a forcing member that urges a friction pad against a disc rotor and a backing plate of the friction pad in a disc brake. Also disclosed is a disc brake where only one side of the metal plate of the anti-squeal shim is coated with the compound layer and the anti-squeal shim is opposed to the forcing member without intervention of a backing-up shim.