Abstract: Disclosed herein is a disc brake which may improve restoration of a piston which occurs when braking operation is terminated. The disc brake having a carrier and a caliper housing includes an adjuster installed inside the piston to maintain the pad plates at a distance from the disc, a pull-rod installed in the cylinder, a front portion thereof being screwed to the adjuster and a rear portion thereof being provided with a flange extending toward an inner circumferential surface of the cylinder, a support member coupled with a rear wall of the cylinder to support the pull-rod and seal an inside of the cylinder, a spring case adapted to have one end fixed to the support member and form a predetermined accommodating space, and an elastic member arranged in the accommodating space of the spring case to return the piston to an original position thereof.

Abstract: A disc brake having one or multiple axially movable rotor discs with annular friction surfaces disposed axially between an annular piston in an annular pressure cavity formed in a housing and annular reaction plate attached to the piston. Friction pads are provided on the reaction plate and also on an axially movable annular reaction disc disposed between the rotor discs. A positioning plate is disposed between the piston and rotor discs and has axially movable poppets thereon, each with a friction pad for contacting the adjacent rotor disc. Individual springs on each poppet bias the poppet pads, rotor discs and friction pads axially together to provide a desired initial braking torque. Upon fluid pressure applied in the piston cavity, the housing moves the positioning plate to move the poppets to release braking torque.

Abstract: In a vehicle caliper brake device, a brake pad supported by a holder applies a frictional force to a braking surface as a diaphragm actuator is driven. The holder is supported by a caliper main body to be capable of displacing in a displacement direction of the brake pad. The diaphragm actuator includes a piston that is driven by a diaphragm to push the holder. The piston is fixed to the holder using a plurality of screws, and therefore the piston applies a pressing force to the brake pad uniformly without the need for guidance by a guide.

Abstract: A brake apparatus includes: a displacement member which is displaced with respect to a disk rotor; a friction member which presses the disk rotor by being pressed by the displacement member thus displaced so as to generate braking force; a hydraulic braking apparatus which displaces the displacement member using hydraulic pressure; an electric-powered braking apparatus which displaces the displacement member using a force that differs from the hydraulic pressure; and a brake ECU which controls the hydraulic braking apparatus based on information acquired from a detection unit which detects information having a correlation with the hydraulic pressure applied to the displacement member. When the electric-powered braking apparatus operates in a state in which braking is being performed by the hydraulic braking apparatus, the brake ECU controls the hydraulic braking apparatus or otherwise the electric-powered braking apparatus so as to suppress hydraulic pressure fluctuation.

Abstract: A caliper brake apparatus includes a brake lining that advances/retreats relative to a caliper main body supported on a vehicle body and can apply a frictional force by slidingly contacting a disc, an anchor pin that supports a guide plate supporting the brake lining on the caliper main body such that it can freely advance/retreat, a piston that advances/retreats relative to the caliper main body and can press the brake lining via the guide plate, a diaphragm that abuts a rear surface of the piston and defines a pressure chamber within the caliper main body and elastically deforms due to pressure of compressed air within the pressure chamber so as to move the piston, and a piston plate that supports the piston on the anchor pin such that the piston can freely slide. The piston includes a plurality of thermal insulation members whose distal ends protrude toward the guide plate.

Abstract: Provided are, among other things, pistons and piston noses. One representative embodiment involves a brake piston that includes a piston body and a top surface, in which the top surface is wider than the piston body and has a small portion that is slightly raised, relative to the rest of the top surface, so that when in use only the small raised portion makes contact with a backing plate of a brake pad.

Abstract: The invention relates to an electromechanical brake, in particular for aircraft, the brake comprising a support carrying at least one electromechanical actuator comprising a pusher that is axially displaceable towards friction elements in order to apply a braking force to the friction elements, selectively, wherein the actuator is mounted on the support via a connection member allowing at least a portion of the actuator carrying the pusher to tilt angularly.

Abstract: A braking system for retarding rotation of a wheel includes a rotor having two opposing rotor sides, wherein the rotor is coupled to the wheel. The braking system also includes a knuckle rotatably coupled to the rotor, a caliper disposed relative to the knuckle, and first and second friction pads. Each friction pad is positioned relative to one of the rotor sides. The friction pads are housed within the caliper, which includes a hydraulic piston positioned to engage one of the friction pads. Movement of the hydraulic piston engages the friction pads with the respective rotor sides to retard the wheel. The braking system also includes a spacer disposed between the caliper and the knuckle and a fastener that fixes the caliper and the spacer to the knuckle. The spacer generates a wedging effect between the caliper and the knuckle when the rotation of the wheel is being retarded.

Abstract: A disc brake having one or multiple axially movable rotor discs with annular friction surfaces disposed axially between an annular piston in an annular pressure cavity formed in a housing and annular reaction plate attached to the piston. Friction pads are provided on the reaction plate and also on an axially movable annular reaction disc disposed between the rotor discs. A positioning plate is disposed between the piston and rotor discs and has axially movable poppets thereon, each with a friction pad for contacting the adjacent rotor disc. Individual springs on each poppet bias the poppet pads, rotor discs and friction pads axially together to provide a desired initial braking torque. Upon fluid pressure applied in the piston cavity, the housing moves the positioning plate to move the poppets to release braking torque.

Abstract: A caliper comprising: a piston bore and a seal groove located in the piston bore proximate to an open end of the piston bore, the seal groove comprising: a front wall; a rear wall; a bottom wall spanning between and connecting the front wall to the rear wall; a projection in a central region of the bottom wall suitable for allowing twisting of a seal during a brake retract and/or brake release; wherein the rear wall diverges away from the front wall as the rear wall extends away from the bottom wall and towards the bore surface.

Abstract: A disc brake, in particular for a commercial vehicle, including a brake caliper, which reaches over a brake disc and in which brake pads are positioned that can be pressed against the brake disc on both sides by means of at least one brake application device and that each have a lining carrier plate and a friction lining fastened thereto. The brake application device has at least one brake piston that acts on the lining carrier plate at the end face of the brake piston. The disc brake is designed such that at least one of the brake pads is supported in an articulated, preferably pivotable, manner in the radial direction of the brake disc.

Abstract: A brake apparatus for restraining rotation of a wheel of a vehicle by application of a brake that is to be activated for causing a friction member, to be pressed against a brake rotor, through a piston that is movable in an axial direction of the piston. The brake apparatus includes: (a) a power drive device; (b) a driven member that is to be moved, by the power drive device, relative to the piston in the axial direction; and (c) an engaging portion that is provided in one of the driven member and the piston, such that the piston is held in engagement with the driven member through the engaging portion. The engaging portion is disposed such that, during release of the application of the brake, the piston is movable rearwardly while being held in engagement with the driven member through the engaging portion.

Abstract: Provided are, among other things, pistons and piston noses. One representative embodiment involves a brake piston that includes a piston body and a top surface, in which the top surface is wider than the piston body and has a small portion that is slightly raised, relative to the rest of the top surface, so that when in use only the small raised portion makes contact with a backing plate of a brake pad.

Abstract: There is provided a caliper body for a two system-type disc brake for a vehicle, which is reduced in size and has an improved air bleeding property by employing a simple structure. In the caliper body for the two-system disc brake for the vehicle, a communication path, which connects cylinder holes for a first brake system, and a first bleeder hole are formed rectilinearly on an outside, in a disc radius direction, of an imaginary line IL1 which rectilinearly connects inner edges, in the disc radius direction, of cylinder holes for a first brake system and a cylinder hole for a second brake system is provided on an outside, in the disc radius direction, of the communication path.

Abstract: Disclosed is an electric disc brake capable of reducing noise and vibration while expanding the life span of the product. The electric disc brake includes a caliper housing to press friction pads provided at both sides of a disc against the disc, a cylinder installed in the caliper housing, a piston moving back and forth in the cylinder to press the friction pads, a driving device generating driving force with respect to the piston, and a volume compensation part communicated with the cylinder to compensate for an increment of a volume of the cylinder according to movement of the piston.

Abstract: The present invention relates to a control-by-wire hydraulic brake structure of bicycle, which includes a caliper portion that is coupled to two brake shoes that are opposite to and spaced from each other; and a transmission portion, which has an end connected to the caliper portion to control the operation of the two brake shoes of the caliper portion and includes a fluid reservoir, a piston, and a transmission arm. The piston is movably received in the fluid reservoir. The transmission arm has an end pivotally connected to an end of the fluid reservoir that is distant from the caliper portion. The piston has an end that is connected to a predetermined location between two ends of the transmission arm. The transmission arm has an end that is distant from the pivotal connection with the fluid reservoir and is operatively coupled to a brake wire.

Abstract: A caliper housing including a piston bore and a bridge extending between the piston bore and a pair of caliper fingers interconnecting the caliper fingers and the piston bore. The caliper fingers of the caliper housing extend downwardly from the bridge to define a flat surface. A rotor having a disc shape defines a first side and a second side and disposed adjacent to the caliper fingers. An outer brake pad defining a first centroid is disposed adjacent to the first side of the rotor abutting the caliper fingers allowing the caliper fingers to urge the outer brake pad into engagement with the first side of the rotor. Each of the caliper fingers defines a pivot edge extending between the outer brake pad and the flat surface of the caliper fingers allowing the outer brake pad to pivot about the pivot edge.

Abstract: Systems and methods for reducing transient brake caliper drag in a motor vehicle are provided. The motor vehicle, for example, may include, but is not limited to, an axle, a rotor coupled to the axle, a brake caliper comprising a brake pad configured to engage the rotor, a brake pedal assembly communicatively coupled to the brake caliper, the brake pedal assembly configured to receive user input directing the brake pad to apply a force to the rotor and user input directing the brake pad to disengage the rotor, and a processor coupled to the brake caliper, wherein the processor is configured to determine, after the brake pedal assembly receives user input directing the brake pad to disengage the rotor, the force applied to the rotor, and command the brake caliper to retract the brake pad away from the rotor when the determined force exceeds a predetermined threshold.

Abstract: A parking brake actuator for a disc brake caliper having at least one service piston. The parking brake actuator includes a tapered collet having an axial bore for receiving the service piston; a release piston, said release piston in axially alignment with the service piston and said tapered collet, said release piston having an internally disposed taper for co-acting with the taper of said tapered collet; and a biasing means, said biasing means structured and arranged to apply a force to said release piston sufficient to place the parking brake actuator in an actuated condition.

Abstract: A brake pad assembly provided for a disc brake apparatus. The brake pad assembly comprises a backing plate having a flat inner face and a flat outer face oriented opposite to the inner face, a friction member fixed to the inner face of the backing plate, and an anti-squeal shim attached to the outer face of the backing plate. The anti-squeal shim includes a flat support plate attached to the outer face of the backing plate and a straight flat flange plate. The support plate of the anti-squeal shim has a peripheral edge including opposite outer and inner edges and opposite side edges. The flange plate is in the form of a flexible cantilever formed integrally with the support plate of the anti-squeal shim and extends away from one of the outer, inner and opposite side edges of the support plate of the anti-squeal shim.

Abstract: A braking system for hybrid vehicle may include a brake pedal, a pedal stroke sensor detecting stroke of the brake pedal and outputting corresponding signal, a brake control unit receiving the signal of the pedal stroke sensor, a driving wheel caliper braking a driving wheel according to control of the brake control unit, a regenerative braking unit including a motor/generator which generates electric energy according to control of the brake control unit in braking of the driving wheel, a master cylinder connected with the brake pedal and operated by the brake pedal, and a driven wheel caliper braking a driven wheel according to operation of the master cylinder.

Abstract: In a disc brake device, a piston is movably supported to a cylinder portion of a caliper, friction pads are operable to push a disc rotor as the piston moving frontward during pressurization, a seal mechanism arranged at the cylinder portion is operable to return the piston to an initial position during depressurization, and the seal mechanism is constituted with a movable element arranged between the cylinder portion and the piston (15) as being movable frontward in the same direction of the piston, a first seal member elastically arranged between the piston and the movable element to make the movable element accompany the piston, a low elasticity member being compressively deformable with initial pressurization of the piston via the movable element, and a high elasticity member being compressively deformable with pressurization of the piston via the movable element.

Abstract: A multiple-piston disc brake includes a brake caliper overlapping brake disc, at least two pressure pistons that are movably arranged in the brake caliper to apply a clamping force to at least one brake pad in the direction of the brake disc, a pressure plate that is coupled to the at least two pressure pistons, and a clamping unit that has a pressure tube and an adjustment device, abridge and a lever. Each of the at least two pressure pistons is mounted in an axially movable manner in a pressure piston guide securely connected to the brake caliper.

Abstract: Provided is a disc brake with high reliability. In a disc brake (1), pins (60) press-fitted to a carrier (58) are inserted through hole portions (56B) of respective planet gears (56) in a freely rotatable and axially movable manner. Further, axial movement of the carrier (58) is allowed by an amount corresponding to a length of a clearance (37). As a result, when a rotary-to-linear ramp (65) advances during actuation of a parking brake, the carrier (58) and the pins (60) advance together with the rotary-to-linear ramp (65). Thus, actuation efficiency becomes excellent and durability is enhanced.

Abstract: A shim plate relatively movably attached with a friction pad in a rotational direction of a disc is disposed between the friction pad and a reaction section of a caliper, a plurality of claw sections formed to extend in a radial direction of the disc at a position deviated in the rotational direction of the disc with respect to a center of pistons are formed at the reaction section, and movement restriction portions that can abut the intermediate claw section disposed at the middle of the claw sections of the reaction section are formed at a surface of the shim plate opposite to the reaction section in the radial direction of the disc.

Abstract: A device comprising: a caliper comprising: one or more piston bores housing a piston; an outboard pad retainer; a bridge; and a shoulder; wherein the caliper is attached directly to a knuckle of an automobile via the shoulder.

Abstract: Disclosed herein is a electric caliper brake with a parking function. The electric caliper brake includes a caliper submodule to apply pressure to a piston to press the disc by converting rotational motion into rectilinear motion through the received rotation power, an actuator submodule to produce braking force to perform the braking function and parking function, and a self-locking module to transfer the braking force by connecting the caliper submodule to the actuator submodule.

Abstract: A braking device including a housing mounted in relative rotation relative to a shaft, braking discs, a braking piston adapted to stress the braking discs, a spring washer mounted on the brake housing on a support zone located on one of the peripheries of its first face, and having on its second face a braking support zone, which cooperate with the braking piston so as to stress the braking discs according to a braking direction. An unbraking piston is adapted to stress the washer according to a direction opposite said braking direction. The spring washer has an unbraking support zone with the unbraking piston on the other of the peripheries of the second face of the spring washer. The braking support zone is located at an intermediate position of the at least one spring washer.

Abstract: A caliper brake device includes a brake shoe for exerting a friction force by sliding in contact with a disk, a caliper main body fixed to a vehicle and an actuator for pressing the brake shoe against the disk. The actuator includes an elastic film fixed to the caliper main body, a drive pressure chamber defined by the elastic film and supplied with a fluid, a valve introducing the fluid to the drive pressure chamber, and a piston interposed between the elastic film and the brake shoe. The fluid is supplied to the drive pressure chamber and the elastic film swells toward the brake shoe, whereby the piston brings the brake shoe into sliding contact with the disk. The valve introduces the fluid to the drive pressure chamber when the brake is applied while limiting the discharge of the fluid from the drive pressure chamber when the brake is released.

Abstract: An apparatus for a disk brake comprises a caliper body having an inner peripheral surface and a seal groove disposed at the inner peripheral surface. The inner peripheral surface is dimensioned to slidably receive a piston therein, wherein the piston moves in a direction of a braking direction axis, and the seal groove is dimensioned to receive a seal therein so that the seal can seal a space between the inner peripheral surface and the piston. The seal groove comprises a movement restricting part that restricts movement of the seal in the direction of the braking direction axis, and a movement permitting part formed as a step facing radially inwardly.

Abstract: An air-cooled piston cap assembly is provided for use in a disc brake caliper that includes a piston cap, and a piston body having a proximal end and a distal end which is slidably movable within a caliper bore along an axis. The piston cap includes a retention portion mounted within the distal end of the piston body, a contact portion located opposite from the retention portion that contacts a brake pad assembly, and an intermediate portion connecting the retention portion with the contact portion. The outer surface of the intermediate portion defines an extended heat exchange path between the contact portion and the retention portion, and may for example hourglass-shaped. An air gap is provided between a top edge of the piston body and an undersurface of the contact portion of the piston cap that allows air to circulate over the extended heat transfer path defined by the outer surface of the contact portion and intermediate portion to cool the cap from frictional heat generated during braking.

Abstract: A bellows (2) of a dust boot (1, 30) having large diameter parts (3) and small diameter parts (4) disposed alternately covers a piston rod (R) projecting from a cylinder (C). A bump stopper (B) fixed to the cylinder (C) projects into the bellows (2) as a projecting portion. The bellows (2) comprises a first section (M) which passes a projecting end of the projecting portion according to the elongation and contraction of the piston rod (R) and a second section (L) located therebelow. By making the small diameter parts in the second section (L) have a smaller inner diameter than the small diameter part located at a boundary between the first section (M) and the second section (L), the bellows (2) can be made slim without interfering with the bump stopper (B).

Abstract: A hydraulic bicycle component includes a first section and a first seal rupturing structure. The first section defines a first fluid path. The first seal rupturing structure is disposed in the vicinity of the first fluid path. The first seal rupturing structure is configured to physically rupture a first seal of a first hydraulic hose when the hydraulic bicycle component is coupled to the first hydraulic hose.

Abstract: A hydraulic bicycle component kit includes a first hydraulic component and a hydraulic hose. The first hydraulic component has a first fluid path. The hydraulic hose is filled with hydraulic fluid. The hydraulic hose has a first end with a first opening and a first seal that seals the first opening. The hydraulic hose and the first hydraulic component are configured such that the first seal of the hydraulic hose is physically ruptured by a first seal rupturing structure.

Abstract: A hydraulic bicycle component system includes a hydraulic component and a first seal. The hydraulic component has a fluid path filled with hydraulic fluid. The hydraulic component is configured to be coupled to a hydraulic hose. The first seal is arranged to seal an end of the fluid path of the hydraulic component.

Abstract: An object of the present invention is to provide a highly reliable disk brake. In a disk brake 1 according to the present invention, a connector portion 35 is provided at a housing 30. The connector portion 35 includes supply terminals 131 for supplying power to a motor 32. The supply terminals 131 of the connector portion 35 and motor terminals 32C of the motor 32 are connected to each other via bus bars 130 made of metallic plate. Further, the bus bars 130 are held in a loosely fitted state on another-side surface 138B of a plate-like portion 138 of a support member 135 attached to the housing 30.

Abstract: A braking system for retarding rotation of a wheel includes a rotor having two opposing rotor sides, wherein the rotor is coupled to the wheel. The braking system also includes a knuckle rotatably coupled to the rotor, a caliper disposed relative to the knuckle, and first and second friction pads. Each friction pad is positioned relative to one of the rotor sides. The friction pads are housed within the caliper, which includes a hydraulic piston positioned to engage one of the friction pads. Movement of the hydraulic piston engages the friction pads with the respective rotor sides to retard the wheel. The braking system also includes a spacer disposed between the caliper and the knuckle and a fastener that fixes the caliper and the spacer to the knuckle. The spacer generates a wedging effect between the caliper and the knuckle when the rotation of the wheel is being retarded.

Abstract: A brake caliper for a disk brake is disclosed. The brake caliper includes a caliper housing defining a bore that extends along a bore axis. A piston of an actuating device is mounted within the bore so as to be movable along the bore axis in an application direction and a return direction. A sealing arrangement is at least partially provided between the piston and the bore. The sealing arrangement includes a sealing ring positioned in a radial groove. A base surface of the groove is formed in the direction of the bore axis and oriented antiparallel with respect to the bore axis such that the groove base surface approaches the bore axis in the application direction.

Abstract: A disc brake to receive a disc and a brake pad. The disc brake includes an inner pad to produce friction with one side of a disc, an outer pad to produce friction with an opposite side of the disc, and a caliper housing including a cylinder part provided therein with a cylinder to receive a piston to press the inner pad and a finger part provided in front of the cylinder part to press the outer pad. The caliper housing includes a spacer to variably change an interval between the cylinder part and the finger part.

Abstract: An axle assembly having two hubs, each for connection to a wheel, a housing for differential gears and a mounting arrangement for a braking system for braking a connected wheel. The housing has a depression formed therein. The depression is configured so as to accommodate: (a) when the mounting arrangement has a drum brake mounted thereon, movement of a slack adjuster of the drum brake in a direction away from one of the hubs nearest the drum brake so as to allow detachment of the slack adjuster; and/or (b) when the mounting arrangement has a disc brake mounted thereon, an air chamber of the braking system, wherein the air chamber is capable of being partially accommodated within the depression.

Abstract: A hydraulic brake device includes at least one caliper body that defines a pressure chamber, at least one elastic enclosure member that is arranged inside the caliper body to operate in combination with the pressure chamber and shows a corrugated configuration, and at least one brake pad mounting assembly, which is arranged on the elastic enclosure member at the side away from the pressure chamber. With fluid passages provided in communication with the pressure chamber, hydraulic fluid can be supplied to compress the elastic enclosure member for driving the brake pad mounting assembly and the brake lining assembly to effect braking. The corrugated configuration helps reducing deformational stress induced in the elastic enclosure member and also reducing operation resistance. A ventilation section is also provided on the caliper body to draw in fresh air for heat dissipating purposes.

Abstract: In an electric linear motion actuator, planetary rollers 7 rotatably supported on their radially inner surfaces by respective support pins 6b are radially inwardly biased by radially compressible ring springs 18 enveloping the support pins 6b, thereby biasing and pressing the respective planetary rollers 7 against the radially outer surface of a rotary shaft 4. Thus, it is possible to stably transmit torque of the rotary shaft 4 to the respective planetary rollers 7 without applying a preload to the planetary rollers 7 with a negative gap between the radially outer surface of the rotary shaft 4 and the radially inner surface of the outer ring member 5.

Abstract: A rotary table includes a brake mechanism capable of providing a large and sufficient brake force. The brake mechanism includes an inner peripheral surface and outer peripheral surface of a sleeve formed coaxially with an axis of a rotatable table, an outer stationary portion provided to a stationary member rotatably supporting the rotatable table and defining an outer hydraulic chamber, and an inner stationary portion provided to the stationary member, arranged radially inward from the outer stationary portion and defining an inner hydraulic chamber. The outer stationary portion is elastically deformed in a radial direction by expansion of the outer hydraulic chamber to push the outer peripheral surface of the sleeve formed on the rotatable table, while the inner stationary portion is elastically deformed in a radial direction by expansion of the inner hydraulic chamber to push the inner peripheral surface of the sleeve formed on the rotatable table.

Abstract: Disclosed herein is an electronic disc brake. The electronic disc brake includes a carrier on which a pair of pad plates are mounted, a caliper housing, which is slidably installed on the carrier and is provided with a cylinder having a piston mounted therein, a pressure device installed within the cylinder, the pressure device converting rotational motion into rectilinear motion to press and release the piston, the pressure device having an output key which protrudes by penetrating a rear wall of the caliper housing, a motor mounted on an outer surface of the caliper housing to generate drive force, a reducer coupled with a rotary shaft of the motor to amplify the drive force, and a coupling interposed between the reducer and the pressure device to transmit the amplified drive force to the pressure device, wherein the motor, the reducer, and the pressure device are coaxially connected in series.

Abstract: A connecting portion 4f to which a pushrod actuating mechanism 7 is connected is provided on an opposite side, to a disc rotor 5, of a bottom wall of a cylinder bore 4e of a caliper body 4 so as to project therefrom. An accommodation bore 4m that accommodates a pushrod 12 and an adjusting bolt 18 is formed in the connecting portion 4f. In forming the caliper body 4, the connecting portion 4f is formed so as to have the same section shapes when taken along a direction perpendicular to an cylinder axial direction. By cutting the connecting portion 4f so that a length of the connecting portion 4f in the cylinder axial direction becomes a predetermined length and processing the connecting portion 4f, a connecting surface 4n to which the pushrod actuating mechanism 7 is connected is formed on the connecting portion 4f.

Abstract: A brake caliper has a brake pad having a backplate with a friction material attached to one side and a loading face on an opposite side. The caliper further includes a piston that applies a force to the loading face. The brake pad is releasably attached to the piston, thereby eliminating a separate brake pad retaining structure in the caliper.

Abstract: An automotive disk brake assembly installed in an automobile having a wheel. The assembly includes a floating caliper supporting an inner and outer brake pad and a brake rotor having a disk, and a hat, and wherein the hat is bolted to the wheel. A hydraulic cylinder is adapted to push the inner brake pads into the disk surface, causing the floating caliper to move bringing the outer brake pad into contact with the disk. Finally, the rotor is made such that a complete 100 kilometer per hour, 0.9 gross vehicle weight braking causes the disk to expand in thickness by at least 0.15 mm and to cool to shrink in thickness, relative to its expanded thickness, by at least 0.1 mm within 60 seconds of the cessation of braking, in an ambient temperature of less than 30° C.

Abstract: An automotive disk brake assembly installed in an automobile having a wheel. The assembly includes a floating caliper supporting inner and outer brake pads and a brake rotor having a disk, a hat, wherein the hat is bolted to the wheel. A hydraulic cylinder pushes the inner brake pads into the disk surface, thereby causing the floating caliper to move so as to bring the outer brake pad into contact with the disk surfaces. Finally, the rotor is made of a material having a thickness and a coefficient of thermal expansion and conductivity, such that a complete 100 kilometer per hour, 0.9 gross vehicle weight braking causes the disk to expand in thickness by at least 0.10 mm and to cool to shrink in thickness, from its expanded thickness, by at least 0.05 mm within 60 seconds of cessation of braking, in an ambient temperature of less than 30° C.

Abstract: A brake piston may include a steel core and a phenolic outer layer that may be overmolded to the steel core.

Abstract: A brake actuating apparatus includes a caliper body with a cylinder. An electric motor is fixed to the caliper body. A piston is installed in the cylinder. A plug and a rotational shaft are installed in the cylinder to be rotated by the motor. A head is attached to the rotational shaft and the plug defines a fluid-receiving space. The rotation of head varies the volume of a fluid contained in the fluid-receiving space, thereby moving the piston.