Abstract: A sliding caliper disc brake for a motor vehicle having a disc, a carrier (2), a caliper (3) and pads (52). The carrier (2), respectively, provides bearing surfaces (61b, 63b) for the caliper (3) and pads (52) having a non-zero angle (Ab) which opposes rotational movement between the caliper (3) and pads (52) when the disc turns in a direct sense (D). Thus, a resistance to a braking torque generated during braking is dampened by a shear force developed between the caliper (3) and pads (52).

Abstract: A secondary source of braking for large hydraulically braked vehicles utilizing the available power source (38) provided by typically available anti-skid and traction control braking systems. The anti-skid braking system is used to control the secondary braking function in a manner optimal to the operating condition of the vehicle. Unique distinctive operating modes are used when the vehicle is either moving (79, 81, 83), or stationary (57, 59, 73). The advantages of the stationary mode are fast time response and high output pressure controlled with a minimum of pump operation and fluid movement. The advantages of the dynamic mode are the ability to modulate brake pressure in response to the driver's command.

Abstract: A pneumatic brake booster having a casing (10) which is divided in a leaktight fashion by at least one movable wall (12) into a front chamber (14) and a rear chamber (16). A pneumatic piston (20) attached to the movable wall (12) has a tubular rear part (22) which extends through the casing (10). A three-way valve (36) which slides in a bore (26) of a pneumatic piston (20) has a valve element which interacts with a first valve seat (28a) formed on a plunger (28) and a second valve seat (20a) formed on the pneumatic piston (20) in response to an operating rod (30) moving a plunger (28) to selectively connects the rear chamber (16) to the front chamber (14) and to a source of high pressure to develop a pressure differential across the movable wall (12). A rear position of rest for the plunger (28) wherein the rear chamber (16) is connected to the front chamber (14) is defined by a front end (32) of a sleeve (34) located in the tubular rear part (22) of the pneumatic piston (20).