A carbon-carbon composite preform including a plurality of layers including carbon fibers or carbon-precursor fibers, the layers include a first exterior layer defining a first major surface, a second exterior layer defining a second major surface, and at least one interior layer disposed between the first exterior layer and the second exterior layer, the at least one interior layer having a peripheral region that forms a portion of an outer surface of the preform. The preform includes needled fibers, where at least some needled fibers extend through two or more layers. The preform has an exterior region and a core region, where the exterior region includes at least the peripheral region of at least one interior layer. The needled fibers define a first needled fiber number density (NFND) in the exterior region and a second greater NFND in at least a portion of the core region.

This disc rotor has a hat portion having a cylindrical portion and a sliding plate portion having an insertion hole into which the cylindrical portion is inserted, being connected together with the hat portion in a state in which the cylindrical portion protrudes from the insertion hole. The coupling is achieved by pinching an inner peripheral edge of the sliding plate portion between a first portion and a second portion that are formed in the cylindrical portion. The second portion is formed by plastically deforming an outer peripheral side of the cylindrical portion toward the first portion.

An apparatus comprising an interface, a memory and a processor. The interface may be configured to receive sensor data samples during operation of a vehicle. The memory may be configured to store the sensor data samples over a number of points in time. The processor may be configured to analyze the sensor data samples stored in the memory to detect a pattern. The processor may be configured to manage an application of brakes of the vehicle in response to the pattern.

A cage for a constant-velocity ball joint is annular and has cage windows arranged spaced apart from one another along a circumferential direction for guiding balls of the constant-velocity ball joint; wherein each cage window has at least on one side a ball guiding surface facing in an axial direction. The cage can be produced by: a) providing a cage having cage windows; b) applying at least one compressive force via an outer circumferential surface of the cage, facing in a radial direction, in a first region of at least one ball guiding surface of at least one cage window; c) deforming the cage in the first region of the at least one ball guiding surface, so that the at least one ball guiding surface is displaced inwardly in the radial direction with respect to an adjacent second region of the cage.

The invention relates to a method for machining the interior of a brake caliper (1) of a disc brake, on which are formed: a first saddle portion to the one side of the brake disc of the disc brake, a second saddle portion to the other side of the brake disc, and a bridge section connecting the saddle portions and providing a free space for at least a part of the brake disc. At least one of the saddle portions is provided with a hollow space (7) for receiving a brake application device, wherein said hollow space comprises a mounting opening (4) towards the free space and extends in the opposite direction until a saddle rear wall (18). At least one support surface for the forces acting during the brake application is formed on the inner side of the saddle rear wall. The machining of the support surface (20) is carried out from the direction of the free space and, for this purpose, a tool (55) is brought from outside of the brake caliper (1) into the hollow space. In order to provide a method for machining the interior of a brake caliper of a disc brake, which allows a high-precision machining of the support surfaces inside the brake caliper even in the case of the narrow space conditions which are typical for the machining of a single-piece brake caliper, the tool (55) is guided into the cavity through another opening (25) than the mounting opening (4).

A friction clutch assembly for an automatic transmission, a friction clutch plate, and a method of forming a friction clutch plate are provided. The method includes providing a friction material layer for a face of the friction clutch plate and cutting the friction material layer with a laser beam to form a plurality of grooves within the friction material layer. In one version, a friction plate for the friction clutch assembly includes an annular core plate having first and second opposed faces and defining an outer edge and an inner edge. Friction material is affixed to at least one of the first and second opposed faces. The friction material defines a plurality of grooves within the friction material, each groove being bordered by friction material having a ridge. The cross-section of the ridge has a corner having a radius of curvature that is less than 300 microns.

A plurality of annular clutch disks (12) is manufactured by blanking or die-cutting a flat sheet metal strip (2) during which the flat sheet metal strip (2) is advanced relative to a blanking or cutting tool along a feed direction between individual blanking or cutting processes with the blanking or cutting tool in order to form the annular clutch disks (12) from the flat sheet metal strip (2). Each of the annular clutch disks (12) is asymmetric with respect to a center point of a respective ring and includes an axis of symmetry (18) which is not orthogonal to the feed direction of the flat sheet metal strip. Each of the annular clutch disks (12) is axially symmetric at least to such an extent that each of the annular clutch disks (12) is installable in a multi-disk clutch (26) in precisely one first installation position (A) and in one second installation position (B). The second installation position results from the first installation position via turning over about the axis of symmetry (18).

A flexible coupling for transmitting torque between parts of a transmission shaft system comprises a tubular section of continuous-fibre-reinforced composite material which has been modified to form a living hinge section with reduced bending stiffness to allow flexion of the tubular section. The tubular section may be modified through the provision of a pattern of formations within the living hinge section. The formations may be in the form of apertures and/or recesses in the continuous-fibre-reinforced composite material to create a plurality of living hinges in the material between, in particular slots and/or grooves.

A brake disk includes a circular base body having a circumferential outer brake rim, a friction layer in certain regions on the base body and an adhesion-promoter or functional layer arranged over an entirety of the base body.

A suspension device of a motor-vehicle wheel includes a support member of the wheel connected to a structure of the motor-vehicle by one or more suspension members and a brake disc connected in rotation with the motor-vehicle wheel. The device also includes a brake disc cover rigidly connected to the support member and at least partially surrounding the brake disc. The brake disc cover is formed in a single piece with said support member of the motor-vehicle wheel.