Abstract: A spring applied, hydraulically released brake includes a housing having an open end adapted to align with a vehicle surface and an internal ring extending from an inner perimeter of the housing; a piston; a disc stack including a thicker stationary disc including a tab with a hole therethrough, the hole receiving a slotted spring pin, the slotted spring pin slidably receiving a pin spring over a portion thereof; and a spring assembly adapted to urge the piston into contact with the thicker stationary disc to establish a default position of the brake; where, in a released position of the brake, the piston is not in contact with the thicker stationary disc, and the pin spring urges the thicker stationary disc into contact with the internal ring of the housing to thereby prevent the thicker stationary disc from free floating.

Abstract: A spring applied, hydraulically released brake includes a housing having an open end adapted to align with a vehicle surface and an internal ring extending from an inner perimeter of the housing; a piston; a disc stack including a thicker stationary disc including a tab with a hole therethrough, the hole receiving a slotted spring pin, the slotted spring pin slidably receiving a pin spring over a portion thereof; and a spring assembly adapted to urge the piston into contact with the thicker stationary disc to establish a default position of the brake; where, in a released position of the brake, the piston is not in contact with the thicker stationary disc, and the pin spring urges the thicker stationary disc into contact with the internal ring of the housing to thereby prevent the thicker stationary disc from free floating.

Abstract: A spring applied hydraulic released brake includes a brake housing including a pair of stator assemblies, a pair of piston-spring assemblies, each of the piston-spring assemblies including a piston assembly, a spring assembly adapted to apply spring force to the piston assembly to thereby engage the piston assembly with a first stator assembly of the pair of stator assemblies in a default position of the brake, and an end cap adjuster providing an opposing surface against which the spring assembly is biased, the end cap adjuster including a body portion having an end cap threading therearound generally corresponding with a housing threading within the brake housing.

Abstract: A hydraulic caliper assembly includes a caliper brake housing including two opposing pairs of two piston assemblies, each of the pairs of two piston assemblies adapted to place a respective stator assembly of a pair of stator assemblies in a braking position, where the caliper brake housing is a unitary, cast component having an internal fluid porting system fluidly coupling each of the piston assemblies with a source of hydraulic fluid, and where each of the piston assemblies have a common configuration.

Abstract: A hydraulic caliper disc brake includes an opposing pair of pistons adapted to act on an opposing pair of washers adapted to act on an opposing pair of stator assemblies, each of the pistons comprising a spherical piston face, each of the washers comprising a spherical washer face abutting a respective one of the spherical piston faces, and a straight washer face opposite the spherical washer face and abutting a respective one of the stator assemblies.

Abstract: A hydraulic caliper disc brake includes an opposing pair of pistons adapted to act on an opposing pair of washers adapted to act on an opposing pair of stator assemblies, each of the pistons comprising a spherical piston face, each of the washers comprising a spherical washer face abutting a respective one of the spherical piston faces, and a straight washer face opposite the spherical washer face and abutting a respective one of the stator assemblies.

Abstract: A caliper brake (10) includes a housing (12) formed of a first housing portion (16) and a second housing portion (18). Each of the first housing portion and second housing portion include a channel (104) extending therethrough. The channels (104) include pins (102) for receiving one or more shims (94) thereon. Brake (10) includes a first stator assembly (60) and a second stator assembly (64) that are separated by a first distance when no shims (94) are on the pins (102). The first stator assembly (60) and the second stator assembly (64) are separated by a second distance less than the first distance when one or more shims (94) are on the pins (102).

Abstract: A spring applied hydraulic released brake includes a brake housing including a pair of stator assemblies, a pair of piston-spring assemblies, each of the piston-spring assemblies including a piston assembly, a spring assembly adapted to apply spring force to the piston assembly to thereby engage the piston assembly with a first stator assembly of the pair of stator assemblies in a default position of the brake, and an end cap adjuster providing an opposing surface against which the spring assembly is biased, the end cap adjuster including a body portion having an end cap threading therearound generally corresponding with a housing threading within the brake housing.

Abstract: A hydraulic caliper assembly includes a caliper brake housing including two opposing pairs of two piston assemblies, each of the pairs of two piston assemblies adapted to place a respective stator assembly of a pair of stator assemblies in a braking position, where the caliper brake housing is a unitary, cast component having an internal fluid porting system fluidly coupling each of the piston assemblies with a source of hydraulic fluid, and where each of the piston assemblies have a common configuration.

Abstract: A stator pad assembly includes a backing plate including a plate slot extending to a plate slot end, the backing plate carrying a stator lining including a lining slot extending to a lining slot end, the lining slot being generally positioned with a portion of the plate slot such that the plate slot end and the lining slot end are of similar position, and the plate slot defining a tool-engaging surface adapted to receive a tool to thereby cause the stator pad assembly to travel.

Abstract: A brake (10,100) includes a piston (14,112) housing one or more springs (16,114) therein. The one or more springs (16,114) are adapted to urge an extension (30,140) of the piston (14,112) into contact with a disc stack (22,122) in a default position of the brake (10,100). Piston body (18,112) may be latitudinally offset from disc stack (22,122) by a distance (39,141). The brake (10,100) includes a manual release feature (70/72, 176).

Abstract: A brake (10,100) includes a piston (14,112) housing one or more springs (16,114) therein. The one or more springs (16,114) are adapted to urge an extension (30,140) of the piston (14,112) into contact with a disc stack (22,122) in a default position of the brake (10,100). Piston body (18,112) may be latitudinally offset from disc stack (22,122) by a distance (39,141). The brake (10,100) includes a manual release feature (70/72, 176).

Abstract: A hydraulic caliper brake including a housing having a first half and a second half and a bridge connecting the housing halves. Each half of the housing includes a bore having a fluid chamber and a piston therein. The caliper brake also includes a fluid network having an inlet port and a bleed port in the first half of the housing, a first channel extending through the bridge and in fluid communication with the inlet port and the fluid chamber in the second half of the housing, and a second channel extending through the bridge and in fluid communication with the fluid chamber in the second half of the housing and the bleed port. A dual-flow passage is provided and is in fluid communication with the fluid chamber in the first half of the housing and the second channel. The fluid chamber in the first half is not in fluid communication with the first channel.

Abstract: A ball ramp brake including a housing, a disc assembly within the housing, and an annular rotatable actuator to actuate the brake by compressing the disc assembly. The rotatable actuator includes a plurality of depressions oriented circumferentially therein which become progressively shallower in a first circumferential direction. A plurality of depressions are circumferentially oriented in a surface of the housing and become progressively shallower in a second circumferential direction. The depressions in the actuator and the depressions in the housing each have a first angle of depression that is steeper than a second angle of depression. A boot seal may be provided between the fluid chamber of an actuating cylinder and the inner area within the housing to prevent fluid leakage. In addition, a cooling chamber may be provided in the housing to improve the brakes efficiency.

Abstract: A hydraulic caliper brake includes a housing formed by two halves. A pair of bores are provided in each housing half, and a piston is positioned in each bore. An end cap closes off each bore and is sealed by an O-ring positioned around the periphery of each end cap. A ring retains each end cap within each bore. Each housing half has a pair of holes aligned with the holes of the other half. A pair of recessed areas are located on opposing ends of the housing, one of the recessed areas being positioned adjacent to one housing half and the other being positioned adjacent to the other housing half. A pair of stator plates each have a first ear with an outer shape having a flattened area positioned within one of said recessed areas in said housing, and a second ear with a continuously curved outer shape. Each ear has a hole therethrough aligned with the holes of the housing halves, and a pin is positioned in the aligned holes. An easily bleedable fluid network supplies fluid to the pistons.

Abstract: A ball ramp brake including a housing, a disc assembly within the housing, and an annular rotatable actuator to actuate the brake by compressing the disc assembly. The rotatable actuator includes a plurality of depressions oriented circumferentially therein which become progressively shallower in a first circumferential direction. A plurality of depressions are circumferentially oriented in a surface of the housing and become progressively shallower in a second circumferential direction. The depressions in the actuator and the depressions in the housing each have a first angle of depression that is steeper than a second angle of depression. A boot seal may be provided between the fluid chamber of an actuating cylinder and the inner area within the housing to prevent fluid leakage. In addition, a cooling chamber may be provided in the housing to improve the brakes efficiency.

Abstract: A hydraulic caliper brake includes a housing formed by two halves. A pair of bores are provided in each housing half, and a piston is positioned in each bore. An end cap closes off each bore and is sealed by an O-ring positioned around the periphery of each end cap. A ring retains each end cap within each bore. Each housing half has a pair of holes aligned with the holes of the other half. A pair of recessed areas are located on opposing ends of the housing, one of the recessed areas being positioned adjacent to one housing half and the other being positioned adjacent to the other housing half. A pair of stator plates each have a first ear with an outer shape having a flattened area positioned within one of said recessed areas in said housing, and a second ear with a continuously curved outer shape. Each ear has a hole therethrough aligned with the holes of the housing halves, and a pin is positioned in the aligned holes. An easily bleedable fluid network supplies fluid to the pistons.

Abstract: A brake (10) for the drive shaft of a vehicle or machine includes a housing (11) having an open end (12) which is adapted to be attached to the vehicle. A shaft is received in the housing (11) and is adapted to be attached to the vehicle drive shaft for rotation therewith. The shaft has a splined outer surface. A disc assembly (30) includes a plurality of rotatable discs (29) carried by the splined surface of the shaft, a plurality of stationary discs (32) which alternate with the rotatable discs (29) and a primary stationary disc (33) located at the end of the disc assembly (30), proximate to the open end (12) of housing (11). As mounted, a plurality of springs (42) cause the stationary discs (32) to engage the rotatable discs (29) to apply a braking torque to the shaft. A piston (21) is moveable to oppose the spring force and allow free rotation of the rotating discs (29). Prior to mounting, a plurality of shipping bolts (25) hold the disc assembly (30) together and axially aligned.