A disc brake device (1) includes: a disc rotor (2) rotatable around its rotation axis; a pair of brake pads (3, 4) provided opposite to each other on both sides of the disc rotor in an axial direction along the rotation axis; and a pressing mechanism (6) able to press the brake pads against the disc rotor from both sides of the disc rotor with pistons (9) provided opposite to each other on both sides of the disc rotor in the axial direction. Each brake pad has a friction material (7) facing a corresponding friction face (2a) of the disc rotor. The number of slits (10) provided in the friction material of one of the brake pads and not passing through any pressing portions pressed by the pistons is different from the number of slits provided in the friction material of the other one of the pair of brake pads and not passing through any pressing portions.

A disc brake device (1) includes: a disc rotor (2) rotatable around its rotation axis; a pair of brake pads (3, 4) provided opposite to each other on both sides of the disc rotor in an axial direction along the rotation axis; and a pressing mechanism (6) able to press the brake pads against the disc rotor from both sides of the disc rotor with pistons (9) provided opposite to each other on both sides of the disc rotor in the axial direction. Each brake pad has a friction material (7) facing a corresponding friction face (2a) of the disc rotor. The number of slits (10) provided in the friction material of one of the brake pads and not passing through any pressing portions pressed by the pistons is different from the number of slits provided in the friction material of the other one of the pair of brake pads and not passing through any pressing portions.

A brake shoe having brake linings for a brake apparatus includes a carrier element, and a first brake lining segment configured to be mounted on the carrier element, and a second brake lining segment configured to be mounted on the carrier element, the first brake lining segment and the second brake lining segment being spaced apart from one another in a mounted state, and the first brake lining segment and the second brake lining segment differing from one another with regard to material composition, force loading and/or shape to configure a friction profile.

Provided axe porous titanate compound particles capable of giving excellent fade resistance when used in a friction material, a resin compound and a friction material each containing the porous titanate compound particles, and a method for producing the porous titanate compound particles. Porous titanate compound particles are each formed of titanate compound crystal grains bonded together and have a cumulative pore volume of 5% or more within a pore diameter range of 0.01 to 1.0 μm.

An automatic parking brake for a truck mounted brake cylinder. The automatic parking brake includes rod that is interconnected to a piston of the brake cylinder and can prevent the piston from returning to the brakes releases position. The rod is controlled by locking nut that will rotate if the rod moves axially through the locking nut and a locking sleeve that is moveable between a locked position, where the locking sleeve engages the locking nut and prevents from the nut from rotating, and a released position, where the locking sleeve is disengages from the locking nut and the locking nut is free to rotate. A spring provides a force biasing the locking nut into the locked position, and brake pipe pressure biases the locking sleeve into the released position.

A pad for a brake caliper for a disc brake of a vehicle having a caliper body and a brake disc adapted to abut against a braking band of the brake disc. The pad has at least one plate and one friction material supported by the plate. The plate has a first side and a second side arranged at opposite tangential ends of the plate. The plate also has at least a first side ear and at least a second side ear. The two ears are each provided with slots. The two slots are adapted to accommodate corresponding associable pins mounted to the caliper body with clearance.

A pad for a brake caliper for a disc brake of a vehicle having a caliper body and a brake disc adapted to abut against a braking band of the brake disc. The pad has at least one plate and one friction material supported by the plate. The plate has a first side and a second side arranged at opposite tangential ends of the plate. The plate also has at least a first side ear and at least a second side ear. The two ears are each provided with slots. The two slots are adapted to accommodate corresponding associable pins mounted to the caliper body with clearance.

Provided are a method for manufacturing a wet friction plate, whereby efficiency of the work of forming a fine groove on a friction material can be improved, the wet friction plate, and a wet multiple-plate clutch device having the wet friction plate. In the method for manufacturing a wet friction plate 200, a core metal 201 and a friction material 210 are prepared in a first step. Thereafter, a resin layer 203 is formed on the core metal 201 in a second step. The resin layer 203 is formed on each of entire two plate surfaces of the core metal 201. Subsequently, the friction material 210 is attached onto the resin layer 203 of the core metal 201 in a third step. Subsequently, a fine groove 211 is formed in the friction material 210 in a fourth step. Specifically, irradiation of a laser beam L is started on an exposed portion 205 of the core metal 201. A laser head 301 is displaced in an annular shape while continuously emitting the laser beam L. Thus, annular fine grooves 204 and 211 are formed in the exposed portion 205 of the core metal 201 and the friction material 210.

A lateral brake assembly of a seat locking mechanism comprises: a first lateral brake including a first track bar and a first housing; a second lateral brake including a second track bar and a second housing; a carriage tube operably connected to the first lateral brake and the second lateral brake; a plurality of first slots located in the first track bar; and a first lateral lock pin operably connected to the carriage tube. The first housing in operation moves over the first track bar and locks onto the first track bar. The second housing in operation moves over the second track bar and locks onto the second track bar. The carriage tube in operation moves the first lateral brake and the second lateral brake to at least one of a locked position and an unlocked position, when the carriage tube rotates.

A brake device that can be cooled effectively while reducing a friction loss of a rotary member is provided. In the brake device, a second friction face formed on a brake stator is brought into contact to a first friction face formed on a brake rotor to stop rotation of a rotary shaft, and coolant is held in a casing. The brake device comprises a first cooling groove formed on the brake rotor to allow the coolant to flow over the first friction face, and a second cooling groove formed on the brake stator to allow the coolant to flow over the second friction face.