Abstract: A disk pack cooling arrangement has a disk pack with alternating first and second plates in which one or more first plates are configured to couple to a first machine component and one or more second plates are configured to couple to a second machine component that is rotatable with respect to the first machine component. Each first plate is of a radial dimension less than each second plate so that one or more annular channels exist radially outward of each first plate. One or more annular springs are disposed in an associated annular channel. Each spring is configured to apply a separating force to at least one second plate and to form one or more flow channels for cooling fluid to reach each first plate from an associated annular channel.

Abstract: A brake booster and related method for its operation for a vehicle, having a master brake cylinder having a first primary piston chamber that is variable using an adjustable first primary piston component, a braking force transmission component, using which at least one driver braking force is transmittable by the adjustable first primary piston component contacted by the braking force transmission component, and an adjustable second primary piston component, the master brake cylinder having a second primary piston chamber that is variable using the adjustable second primary piston component, and the brake booster has a booster force transmission component, using which a booster force from the actuator device is transmittable at least partially to the adjustable second primary piston component contacted by the booster force transmission component, and the braking force transmission component in its force-free initial position is distanced by a first free play from the first primary piston component and/or the

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 bicycle brake caliper apparatus comprises a caliper housing and a plug. The caliper housing includes a fluid chamber and an opening for receiving the plug therein, wherein the opening extends to an outside of the housing at a first location. The housing also includes a fluid passage in fluid communication with the fluid chamber, wherein the fluid passage is in fluid communication with an outside of the housing at a second location offset from the first location. The fluid passage is closed when the plug is in a first position. The fluid passage is open when the plug is in a second position so that fluid is allowed to flow from the fluid chamber, through the fluid passage and to the outside of the housing at the second location.

Abstract: A brake caliper, especially for motorcycle applications, comprises a main rigid body, which can be coupled with a portion of a structure or a vehicle, and defining at least one seat (5); at least one piston (4) slidingly housed in the respective seat (5) and associated with fluid sealing means (22) and with elastic means (19) acting between the piston (4) and the seat (5) to cause at least an action of elastic return to the piston (4) during the sliding thereof, and defining—in cooperation with the respective seat (5) wherein it is inserted and with the elastic means (19)—a first chamber (21) in fluid communication with actuation means. The piston (4) further exhibits a side surface (11) which delimits, in cooperation with a side surface (17) of the respective seat (5), with the sealing means (22) and with the elastic means (19), a second chamber (24), and finally comprising also tapping means to provide a fluid communication between the first chamber (21) and the second chamber (24).

Abstract: A hydraulic disc brake caliper housing that includes first and second side portions and first and second end portions that cooperate to define a fluid path that extends between a fluid inlet and a fluid outlet. The fluid path extends from the fluid inlet, through the first side portion, through the second end portion, through the second side portion and to the fluid outlet.

Abstract: A brake device includes a brake disk fixed to a power transmission shaft, and a brake caliper for braking the brake disk by a nipping action. The brake caliper includes a caliper bracket fitted to a final gear case, and a caliper body detachably fitted to the caliper bracket, wherein the caliper body is fitted to the caliper bracket by a pair of fixing bolts. The screw-fitting directions of the individual bolts of the pair of fixing bolts are opposite to each other. The aforementioned brake device for a vehicle permits maintenance work to be quickly and easily carried out.

Abstract: A braking system for braking a rotor relative to a stator, the braking system comprising braking means respectively secured to the rotor and to the stator, a brake piston, return means for returning the piston to its braking position, a braking chamber, and a brake release chamber, which chambers are interconnected via a link duct serving to generate a flow of fluid in an assisted braking situation in which the braking chamber is connected to a fluid feed duct, while the brake release chamber is connected to a fluid return duct. The link duct is equipped with means for limiting the flow of the fluid at least in the direction going from the brake release chamber to the braking chamber.

Abstract: A method of electronic brake force distribution is applied to contribute to vehicle stability even in the event of failure of the system that detects failure of the front-axle brake circuit (13) in a vehicle (1). The method involves initiating a pressure maintenance or pressure reduction phase only after the standards with respect to a minimum vehicle deceleration upon brake circuit failure are met. This way, it is ensured that the standards are observed, on the one hand, and locking of the rear wheels (6,7) before the front wheels (4,5) is prevented with great likelihood, on the other hand. Thus, electronic brake force distribution (EBD) is switched over to less sensitive criteria. This makes allowance for both possibilities in the event of a failure of a pressure switch (15), i.e., that the front-axle brake circuit (13) is intact or that it is defective.

Abstract: A disk brake assembly for a trailer includes a rotor, inner and outer brake pads, a mounting bracket, upper and lower pad retention assemblies, a caliper assembly and a clamping arm. The rotor is a disk having the inner and outer brake pads positioned on opposite sides thereof. The mounting bracket, in cooperation with the upper and lower pad retention assemblies, maintains the position of the inner and outer brake pads relative to the rotor. The mounting bracket has a body with an upper arm and a lower arm extending therefrom. The upper arm has a downwardly-facing guide surface and the lower arm has an upwardly-facing guide surface. Each pad retention assembly includes an engagement sleeve, a clamping arm coupling and a pair of "U"-shaped spring sections connecting the engagement sleeve and clamping arm coupling. The upper engagement sleeve is mounted on the guide surface of the upper arm and the lower engagement sleeve is mounted on the guide surface of the lower arm.

Abstract: A brake for rail cars comprises a floating caliper disc brake attached to a cylindrical housing element of a drive housing. The drive housing may be the motor housing, the transmission housing or a common housing for the drive motor and the transmission. The cylindrical housing element has an opening in its peripheral wall in which the floating caliper is mounted. The actuator is mounted in an entry in the peripheral wall of the drive housing. This mounting arrangement allows easier accessiblity to the brake during servicing operations and provides for ventilation of the brake disc.

Abstract: A brake assembly, for causing brake pads to brake a rotor having opposite sides, comprises first and second caliper sections, and piston chambers associated with the sections. Pistons are movable in the chambers to cause the pads to frictionally engage the opposite sides of the rotor. Structure interconnects the caliper sections; and there is porting in the structure to transmit fluid pressure to the chambers to cause the pistons to displace the pads to frictionally grip the rotor, for braking same.

Abstract: An aircraft multiple disc and brake assembly having an axle with a cylindrical wheel member journaled thereon. The inner peripheral portion of the wheel member has a plurality of circumferentially spaced splines to support axially spaced rotor discs which are interleaved with stator discs which are splined to axially extending ribs mounted on a torque tube which in turn is connected to the axle. A piston support member is secured to the axle via a hub member and has a plurality of circumferentially spaced cylinders with a piston slidably mounted therein. One end of each piston cooperates with the receiving cylinder to define a piston chamber that permits pressurization to actuate the braking action. The other end of the piston has a pair of discs with mating spherical contoured surfaces to permit a tilting therebetween to eliminate side loading and provide even wear.

Abstract: A direct drive type rotation dividing table includes a dividing table mounted on an output shaft of a rotor which is accommodated in a housing together with a stator. A clamp mechanism for maintaining the dividing table at a stopped position includes a cylinder slidably disposed in the housing in an axial direction and having a radially extending plane portion and a friction surface adapted to contact the output shaft, an elastic member having one end connected to the housing and urging the friction surface of the cylinder to move away from the output shaft, and a piston having an elastically deformable thin plane portion opposing the plane portion of the cylinder and having one side fixed to the housing and the other free end slidable on the inner surface of the slider. The piston has a friction surface which is adapted to contact a backside of the dividing table.

Abstract: An actuating device for a disk brake operates two brake shoes to move axially against the opposite sides of the brake disk. Each brake shoe is connected by a pin to a brake caliper half. Each brake caliper half is comprised of two levers spaced one above the other, with one end of the lever attached to the respective brake shoe for the brake caliper half, the other end of the lever attached to the respective side of the actuator for the caliper halves and all of the levers being pivotable about a common mounting pin disposed between the brake shoes and the actuator. The levers of the pairs alternate so that each brake caliper half is slightly offset along the mounting pin from the central plane of the brake. All levers are identically shaped. Each pair of levers is connected by a respective pin at the actuator and a respective pin at the brake shoe.

Abstract: A self-energizing disc brake of the spreading type is applied by a pair of oppositely acting hydraulic pistons which work in a common bore in the housing of the brake. One piston acts directly on an adjacent lug on a pressure plate and the other piston acts on a lug on a pressure plate through a transmission member which extends through the piston and may be coupled at its outer end to a hand-brake or similar lever.

Abstract: A park brake mechanism includes a sealed housing enclosing a brake disc pack which is normally pressed together by a plurality of coil compression springs acting between an end of the housing and a pressure plate. Four hydraulic pistons are reciprocably mounted in the opposite end of the housing and connecting pins are received between the pistons and the pressure plate and serve to effect the release of the braking action between the disc pack discs when the pistons are pressurized. The pistons are in a rectangular pattern and diagonally opposite ones have threaded ports aligned therewith and adapted for receiving screws for stroking the pistons in the absence of pressure. A fluid pressure passage leading to the pistons contains a one-way orifice which operates to modulate the application of the brakes when pressure is relieved from the pistons.

Abstract: A double, disc type brake system for wheeled vehicles, including two disc packs, operationally combined in a working set, for each vehicle wheel to be braked, the disc packs in each set being respectively placed in back to back relationship, and the disc packs having hydraulically operated multiple pistons for actuation thereof, the multiple pistons constituting two oppositely faced piston sets operatively positioned in a common actuator support centrally disposed between the two disc packs of each set, and the two piston sets being respectively operable to actuate the two disc packs of the set. The hydraulic system is operable to initially actuate one disc pack of each set upon movement of a brake pedal through a first increment of application for light braking action, and to inclusively actuate the other disc pack of each set upon movement of the pedal in an additional increment of application for increased braking action.

Abstract: In a disc brake in which the brake applying mechanism is actuated by movement of a first pull rod, the hydraulic actuator which effects movement of the pull rod comprises an assembly of piston and cylinder members of which one is rigidly fixed with respect to a housing and the other is movable relative thereto and acts on the first pull rod. A second pull rod is coupled to the first pull rod and is used for parking or emergency braking.

Abstract: An extensible cylinder slidably containing a fluid pressure actuated piston is provided with differential first and second area portions exposed to a piston actuating pressurized fluid and an opposing pressurized fluid which opposing fluid is pressurized by a fluid pressure amplifier or booster responsive to the piston actuating pressurized fluid to maintain a proportional relationship between the pressures of the piston actuating fluid and opposing fluid to thereby generate a force balance on the cylinder. A stop on the cylinder is engaged by the piston upon completion of the piston stroke in the cylinder causing the cylinder to advance with the piston to thereby extend the stroke of the piston. The volumetric requirement of the piston actuating pressurized fluid for a given displacement of the piston is constant regardless of the position of the extensible cylinder.

Abstract: A hydraulic disc brake for a vehicle comprising a rotatable disc adapted to be coupled to a wheel for rotation therewith and a frame having a pair of cylinders in which are located pistons for moving brake shoes toward the disc for engagement therewith when fluid is admitted to the cylinders. A flexible cup is slidably located in each cylinder between its piston and its rear end for forming a movable seal between the cup and the wall of the cylinder. The cup comprises a forward wall having an annular side wall extending rearward therefrom; a central hub spaced inward from the annular side wall; and a plurality of angularly spaced webs extending radially between the central hub and the annular side wall.