Abstract: The device comprises a tandem master cylinder, a booster high pressure fluid distributor, 2, a valve mechanism 4 to interconnect the master cylinder and the distributor selectively to a braking circuit. The high pressure circuit is connected to the pipeline 46 which controls the plungers 52, 56 acting on the ball valves 50, 51 respectively. In the event of failure of the high pressure circuit,the valves 50, 51 connect the pipeline 26 directly supplied by the master cylinder and the pipeline 5 which supplies a brake motor 8 for a wheel. The device may be utilized in an anti-skid circuit.

Abstract: The subject of the invention is a disc brake of the type with a caliper (1) mounted to slide on a fixed support (5, 30) by means of two pins (3, 4). The caliper incorporates a brake motor (9) which is capable of stressing an inner pad (8) directly and an outer pad (7) via the sliding caliper (1) to engage frictionally with a brake disc (2). According to the invention, the caliper (1) is located without appreciable play between a front stop (26) and a rear stop (27) placed respectively opposite a front end (24) and a rear end (25) of the caliper. Depending on the direction of rotation of the disc (2), one or the other of these stops (26, 27) fixed to the fixed support (5, 30) receives all or some of the forces generated by the pads (7, 8) and transmitted to the caliper (1) with which the pads (7, 8) interact.