A friction drive arrangement includes a plurality of interleaved rotor and stator discs. An end stator disc is adjacent a reaction plate containing a plurality of cylindrical, stepped bores defining spring receptacles opening toward the end stator disc and pin guide holes opening in an opposite direction. Each receptacle contains a coil compression spring located between a bottom of the receptacle and a spring retention pin having a first end section reciprocably received in the guide hole and having a second end section defined by a large diameter foot located between an end of the spring and the end stator disc, with the foot being configured for directly engaging the end stator disc. A tool is used to retract the pins and associated springs into the associated receptacles so as to retain the springs during assembly. Excess retraction of the pins is prevented for preventing over-compression of the springs.

A disc guard assembly for use in shielding a disc of a rear disc brake system on a motorcycle is provided. The disc guard assembly may include a disc guard, which may be plastic, and a carrier adapter, which may be metal. The carrier adapter may be removably attached to a rear brake carrier mount of the rear disc brake system of the motorcycle via one or more fasteners, and the disc guard may be removably attached to the carrier adapter via one or more fasteners.

A disc guard assembly for use in shielding a disc of a rear disc brake system on a motorcycle is provided. The disc guard assembly may include a disc guard, which may be plastic, and a carrier adapter, which may be metal. The carrier adapter may be removably attached to a rear brake carrier mount of the rear disc brake system of the motorcycle via one or more fasteners, and the disc guard may be removably attached to the carrier adapter via one or more fasteners.

The invention relates to a piston for a brake caliper, which can be actuated in combined fashion, of a disk brake, which piston 1 is produced by shaping processes from a metallic material, in particular from a planar metal sheet, and which piston 1 is formed as a pot which is open on one side and which has a longitudinal axis, a wall and a piston crown, and which piston has a twist prevention facility for a drive nut. The invention is based on the problem of providing a robust piston construction which is better capable of tolerating erroneous repair work. To solve the problem, it is proposed that the twist prevention facility has, between the piston and drive nut, at least one reinforcement for protecting against plastic deformation of at least one driver.

A clamping device for a braking system including a caliper supporting at least two hydraulic actuators each configured to provide a clamping force in order to force friction elements together, and at least one electric actuator which is configured to provide the clamping force and coupled to a mechanism for converting the rotational movement of an output shaft of the electric actuator into a translational movement in order to force the friction elements together. The clamping device includes a mechanism for balancing the clamping forces of the hydraulic and electric actuators which adapts the orientation of at least one of the friction elements according to its wear, regardless of the type of actuation used.

A brake assembly may comprise: a rotatable part configured to be rotatable by an actuator; a translatable part operably coupled with the rotatable part and configured to be axially translatable relative to the rotatable part to move a brake pad according to rotation of the rotatable part; a bearing assembly comprising an inner race provided at the rotatable part, an outer race or ring, and rollable bodies rollably disposed between the inner race and the outer race or ring; and three or more bearing retainers disposed between the bearing assembly and a non-rotatable structure covering at least a part of the bearing assembly such that the bearing retainers disposed between the bearing assembly and the non-rotatable structure covering at least the part of the bearing assembly provide a force to the outer race or ring of the bearing assembly at least in one axial direction of the bearing assembly.

A disk brake piston system having a piston having a metallic outer wall surrounding a central axis, the outer wall being of a material and a thickness which that could be formed by deep drawing; a metallic front wall closing one end of the outer wall, the front wall including a curved area extending toward an interior of the piston, the front wall being of a material and having a thickness that could be formed by deep drawing; and a sleeve positioned at least partially within the piston and configured to interface with an interior side surface of the outer wall such that the sleeve and the piston are restrained from rotating relative to one another around an axis parallel to the central axis, the sleeve comprising a flat or curved internal surface, having a non-circular cross-section, wherein the sleeve comprises a polymeric material.

A brake caliper arrangement for a disc brake, and a disc brake for such a brake caliper arrangement is disclosed. The brake caliper arrangement comprises a brake caliper which has a carrier structure and a housing with a cavity, a brake piston which is mounted axially movably in the cavity, and a spindle drive having a spindle which is mounted in the cavity so as to be rotatable relative to the housing. A spindle nut which is axially drivable via the spindle and mounted axially displaceably. The spindle drive can be actuated such that it can be placed in a first actuation state and in a second actuation state, wherein the spindle nut in the first actuation state exerts a force on the brake piston in the axial direction. The spindle nut in the second actuation state exerts no force on the brake piston in the axial direction. Furthermore, the brake caliper arrangement has a clamping device which exerts a force on the spindle in the axial direction such that in the second actuation state of the spindle drive, the spindle is mounted play-free relative to the housing in the axial direction.

A disk brake piston system having a piston having a metallic outer wall surrounding a central axis, the outer wall being of a material and a thickness which that could be formed by deep drawing; a metallic front wall closing one end of the outer wall, the front wall including a curved area extending toward an interior of the piston, the front wall being of a material and having a thickness that could be formed by deep drawing; and a sleeve positioned at least partially within the piston and configured to interface with an interior side surface of the outer wall such that the sleeve and the piston are restrained from rotating relative to one another around an axis parallel to the central axis, the sleeve comprising a flat or curved internal surface, having a non-circular cross-section, wherein the sleeve comprises a polymeric material.

An apparatus for receiving a tire pressure monitoring signal includes a radio frequency identification (RFID) tag configured to transmit tire condition information; a radio frequency identification (RFID) reader configured to receive the tire condition information; and a first controller configured to communicate with the radio frequency identification (RFID) reader and to control power supplied to the radio frequency identification (RFID) reader, wherein the first controller is configured to control an electro-mechanical brake (EMB).