[OBJECT]

The present invention provides a friction material used for a disc brake pad, which is manufactured by forming a non-asbestos-organic (NAO) friction material composition, which is able to suppress an occurrence of noise just before a vehicle stops, while satisfying laws and regulations relating to the required amount of the content of the copper component.

[MEANS TO SOLVE THE PROBLEM]

The friction material for the disc brake pad is manufactured by forming the NAO friction material composition that is free of the copper component, the friction material composition practically does not include an iron component but includes 15-22 weight % of a non-whisker-like titanate, relative to the total amount of the friction material composition, as a titanate, 15-25 weight % of zirconium oxide with the average particle diameter of 1.0-4.0 μm, relative to the total amount of the friction material composition, as the inorganic friction modifier, and 4-6 weight % of cleavable mineral particles, relative to the total amount of the friction material composition, as the inorganic friction modifier.

A wet friction material includes a base including a matrix of fibers and filler particles embedded in the matrix of fibers; a binder embedded in an interior of the base; and a quaternary ammonium salt containing coating on an outer surface of the base. The quaternary ammonium salt containing coating can include a quaternary ammonium salt and a solution binder

A brake module for a drive system, in particular for doors, including at least one thrust washer and at least one brake disc, wherein the at least one thrust washer and the at least one brake disc each have at least one friction surface rubbing against each other during braking operation is provided. The embodiments also relate to a drive system, in particular for doors, including such a brake module. The embodiments further relate to a production method for a brake module of the abovementioned type. Known brake modules have a high variation in the braking force on the one hand in the course of their service life and on the other hand as a function of the temperature.

A drive shaft is for selectively connecting a drive input to an output. The drive shaft has a tubular portion, a first diaphragm member, and a second diaphragm member displaced axially along the shaft from the first diaphragm member. The first and second diaphragm members each are formed with two axial ends. At least one undulation extends radially of the ends. The tubular portion connects the first and second diaphragm members. The first and second diaphragm members and the tubular portion are formed of fiber-reinforced polymer matrix composites. The first and second diaphragm members are connected to first and second axial ends of the tubular portion through a mechanical connection at joints. There is also a method of forming a drive shaft.

The present invention comprises a coating, in particular for brake discs, brake drums and clutch discs, and also a brake disc for a disc brake or a brake drum for a drum brake or a clutch disc for a clutch, a disc brake or drum brake or clutch itself and also a method for producing a coating in particular for brake discs, brake drums and clutch discs, and the use of a coating. The coating has a first layer, which comprises a metal-based material, which contains less than 20% by weight tungsten carbide or other carbides, and a second layer, which is applied to the first layer and comprises a tungsten-carbide-containing material, which contains 20% by weight to 94% by weight tungsten carbide, wherein the first and the second layers are thermally sprayed coatings.

A brake component is disclosed. In various embodiments, the brake component includes a ceramic matrix composite (CMC) structure including a plurality of nominally dense plies, interleaved with a plurality of interlayers, wherein the plurality of nominally dense plies and the plurality of interlayers are bonded by at least one of a Field Assisted Sintering Technique (FAST), a Spark Plasma Sintering (SPS) process, or a localized heating process. In various embodiments, the brake component is a rotor disk or a stator disk.

A fiber reinforced composite component may include interleaved textile layers and ceramic particle layers coated with matrix material. The fiber reinforced composite component may be fabricated by forming a fibrous preform and densifying the fibrous preform. The fibrous preform may be fabricated by forming a first ceramic particle layer over a first textile layer, disposing a second textile layer over the first ceramic particle layer, forming a second ceramic particle layer over the second textile layer, and disposing a third textile layer over the second ceramic particle layer.

An interference fit connection for a shaft comprises a hub having a conical through opening and a reduction sleeve having a cylindrical through opening for arrangement on the shaft and a conical outer circumference, where the cone angle of the conical outer circumference corresponds to the cone angle of the corresponding conical through opening of the hub. The hub is a two-component part having a first component made of steel and a second component made of fiber-reinforced plastics material. The second component made of fiber-reinforced plastics material is designed as a ring which is arranged on the outer circumference of a sleeve portion of the first component, which sleeve portion surrounds the reduction sleeve, so as to surround this sleeve portion. The fiber-reinforced plastics material has a higher modulus of elasticity than the steel of the first component.

An asbestos-free organic friction material, in particular for producing brake pads and shoes for vehicles made up of a composition or mixture having a fibrous base, a filler, an organic binder and optional metal oxides. The composition is completely free of copper and copper compounds or alloys and includes in the fibrous base, together with inorganic and/or organic fibers, from 1% to 10% by volume, calculated relative to the total volume of the composition, of stainless steel fibers. The friction material further includes between 1% and 25% by volume of a system of fibrous oxides consisting of potassium hexatitanate and zirconia.

Brake rotors for bicycles are described herein. An example brake rotor for a bicycle includes a carrier to be coupled to a hub of the bicycle. The brake rotor also includes a brake track having braking surfaces to be engaged by brake pads. The brake track is disposed radially outward of the carrier. The brake track has a first thickness and the carrier has a second thickness greater than the first thickness. The brake track is coupled to the carrier such that the brake track is axially movable relative to the carrier while being radially and circumferentially constrained relative to the carrier.