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 magnetorheological braking device with a fixed holder and a first and second braking component. One of the braking components is connected to the holder and does not rotate relative thereto. The two braking components are continuously rotatable relative to one another. The first braking component extends axially, and the second braking component has a hollow shell part extending around the first braking component. A peripheral gap, filled with a magnetorheological medium, is formed between the first and second braking component. The first braking component has an electric coil and a magnetically conductive core extending axially. Magnetic field concentrators, on the core and/or the shell part, protrude into the gap, creating variable gap height. The electric coil is wound around a section of the core. A magnetic field of the electric coil runs through the core, magnetic field concentrators, and the gap into a wall of the shell part.

A spring and damper assembly for a centrifugal clutch for a CVT, the CVT having a clutch hub rotatably located within a drum and a plurality of clutch shoes slidingly disposed within the clutch hub. Each shoe includes a spring cavity, the spring and damper assembly being located within the spring cavity. The spring and damper assembly includes a spring disposed within the spring cavity and a spring retainer located within the spring cavity and positioned against one end of the spring. The spring retainer is engaged with the clutch hub and configured to locate the spring within the spring cavity. A dampener is located within the spring. The dampener is made from a material configured to reduce motion of the spring.

A brake caliper has a caliper body having two side walls delimiting a disc space for accommodating a portion of a brake disc, a connection structure extending straddling the disc space and connecting the side walls to each other, and a pad housing for accommodating at least one pad. A transmission housing is connected to the caliper body so that a front wall of the transmission housing faces the disc space. Thrust members bias the pads against the brake disc along an actuation axis. A control housing supports and houses an electric motor having a drive shaft. and configured to generate and transfer mechanical power to the thrust members. A brake control unit controls the electric motor. The drive shaft protrudes from a front side of the electric motor facing the caliper body. The brake control unit has an electronic board extending in a transverse direction with respect to the actuation axis.

A spring and damper assembly for a centrifugal clutch for a CVT, the CVT having a clutch hub rotatably located within a drum and a plurality of clutch shoes slidingly disposed within the clutch hub. Each shoe includes a spring cavity, the spring and damper assembly being located within the spring cavity. The spring and damper assembly includes a spring disposed within the spring cavity and a spring retainer located within the spring cavity and positioned against one end of the spring. The spring retainer is engaged with the clutch hub and configured to locate the spring within the spring cavity. A dampener is located within the spring. The dampener is made from a material configured to reduce motion of the spring.

An electric brake for an electric drive includes a brake coil housing joined to an electric motor end cap to form a brake compartment containing a first and second stator with a rotor assembly disposed between the two stators. The rotor assembly comprises isolators for vibration damping and alignment of brake pucks constrained by and rotating along with a rotor engaged to an output shaft of the electric motor. An adjustable plug, a spacer and a spring are disposed in the brake coil housing. The spring is compressed by the adjustable plug to apply a biasing force against the second stator to press the stator against the brake pucks of the rotor assembly, and an electric brake coil is positioned adjacent to the second stator to electromagnetically pull the second stator away from the pair of brake pucks when energized.

In order to provide a hydroxyapatite that can be used without reservation in the food industry, a hydroxyapatite powder is provided composed of primary particles. The median size of the primary particles from which the powder is made is >0.10 m and the aspect ratio of the primary particles is <5. The specific surface area of the hydroxyapatite powder is 10 m.sup.2/g, and the bulk density is >550 g/l. Also disclosed is a method with which such a hydroxyapatite powder can be obtained.

The following description relates to a constant velocity joint (CVJ) included in a greater joint assembly. The joint assembly comprises: a CVJ having an outer race with a weld seat; a flange component with a weld seat projection on a first side, where the weld seat projection is configured to mate with the weld seat of the outer race; a conductive component that joins the outer race and the flange component at an interface between the outer race and a second side of the flange component, opposite the first side; and a shaft component drivingly coupled to the constant velocity joint, where the constant velocity joint is received by and drivingly coupled to the shaft component at the weld seat of the outer race.

A brake friction member includes a friction base material and a transfer film material. The friction base material is stacked on a back plate. The transfer film material is stacked on the friction base material and faces an opposing member. The transfer film material is made of a composition obtained by mixing an organic filler in an ultralow melting point resin component.

The invention relates to a brake drum assembly for braking at least one vehicle wheel that rotates about a rotation axis, the brake drum assembly comprising: a brake drum configured to rotate about the rotation axis and having a ring section extending circumferentially about the rotation axis and an end wall section extending at an angle to the rotation axis, the brake drum having an inner surface bounding at least part of a receiving space of the brake drum; at least one brake dust collector that faces an outer surface of the brake drum, wherein the brake drum comprises at least one through-hole providing a path through which brake dust can move from the receiving space to the dust collector.