A brake device for braking a wheel includes a brake drum, a brake pad carrier which is arranged or can be arranged in the brake drum and has at least one brake pad, and an actuator apparatus for the reversible transfer of the brake pad carrier between a braking state, in which the brake pad is operatively connected to the brake drum, and a freewheeling state, in which the operative connection between the brake pad and the brake drum is canceled, the brake pad carrier being elastically deformable for the transfer from the freewheeling state into the braking state.

A bushing assembly is provided for a spring brake actuator of a vehicle air braking system. The bushing assembly comprises a single-piece bushing member made of a material that is homogenous throughout the bushing member. The bushing member includes a first rib structure that faces one axial direction of the bushing member and a second rib structure that faces an opposite axial direction of the bushing member.

The present invention refers to a disc brake having a brake caliper, which overlaps at least one brake disc, and a brake actuation mechanism having an amplification mechanism including a brake lever being rotatable around a pivot bearing for introducing a clamping force from an actuator, the brake lever having an arm extending between its actuator connection means and its transmission means, a thrust element in connection with said transmission means for transmitting the amplified clamping force onto the brake disc, in which the brake lever comprises a recess between its actuator connection means and its transmission means, which recess is traversed by the axis of said pivot bearing.

The present invention refers to a disc brake having a brake caliper, which overlaps at least one brake disc, and a brake actuation mechanism having an amplification mechanism including a brake lever being rotatable around a pivot bearing for introducing a clamping force from an actuator, the brake lever having an arm extending between its actuator connection means and its transmission means, a thrust element in connection with said transmission means for transmitting the amplified clamping force onto the brake disc, in which the brake lever comprises a recess between its actuator connection means and its transmission means, which recess is traversed by the axis of said pivot bearing.

A spring brake actuator having a push rod plate and a diaphragm. A rim projects from the diaphragm for engaging a housing containing the push rod plate. A sidewall is connected to the rim, which is connected to a bottom surface, forming an outer diameter of the diaphragm. Flanges, perpendicular to the diaphragm, extend from the diaphragm forming an inner diameter for which the push rod plate is inserted into. An adhesive is placed between the diaphragm and the push rod plate, wherein the adhesive maintains an attachment and a seal between the diaphragm and the push rod plate keeping the diaphragm and the push rod plate in line with each other.

A caliper bracket of a vehicle disk brake includes an axle coupling part, an extension part, a caliper attaching part and a swing arm coupling part. The axle coupling part is disposed on an opposite side to a disk rotor and is attached to a rear wheel axle passing through a center of the disk rotor. The extension part is extending from the axle coupling part. The swing arm coupling part is provided on the other side part of the extension part in the longitudinal direction and is coupled to a swing arm. The extension part is formed to linearly extend from the axle coupling part, and the swing arm coupling part is formed to have a cuboid shape protruding toward the opposite side to the disk rotor and capable of fitting with a coupling groove member provided for the swing arm.

A vehicle spring brake having a parking brake housing that defines a parking brake chamber and a service brake housing that defines a service brake chamber. A flexible membrane separates the parking brake chamber from the service brake chamber and flexes into and out of the service brake chamber based upon a pressure differential between an air pressure in the parking brake chamber and an air pressure in the service brake chamber. A pushrod extends out of the service brake housing when the flexible membrane flexes into the service brake chamber and retracts into the service brake housing when the flexible membrane flexes back out of the service brake chamber. A control valve controls the pressure differential to thereby control movement of the flexible membrane and the pushrod.

A pressure-medium unit includes a housing, which is produced by injection molding and composed of plastic, in the housing wall of which housing at least one connection bush having a passage opening is fastened, through which pressure medium is fed into and/or led out of the interior of the housing. In the injection molding process of the housing, the connection bush, with the exception of the passage opening, is at least partially injection-molded into the housing wall.

To test a vehicle power braking system, a piston of a power brake pressure generator is displaced twice for a pressure build-up and in between back preferably by a longer distance. Extension of the piston travel during the second displacement is an indication of air in a cylinder of the power brake pressure generator due to an excessively low brake fluid level in a brake fluid reservoir.

To test a vehicle power braking system, a piston of a power brake pressure generator is displaced twice for a pressure build-up and in between back preferably by a longer distance. Extension of the piston travel during the second displacement is an indication of air in a cylinder of the power brake pressure generator due to an excessively low brake fluid level in a brake fluid reservoir.