Abstract: The present invention relates to a pneumatic brake booster assembly for a vehicle comprising a brake booster (10) formed from two shells (18; 37), a master-cylinder (14) mounted on the booster (10), a brake pedal (20) operatively linked to the booster (10) and mounted on a support bracket (22). According to the invention, one of the shells (18; 37) of the brake booster (10) is formed by a plate (26) upon which is mounted the support bracket (22), the plate (26) being destined to form a part of a firewall (12) of the vehicle.

Abstract: A socket (21) for retaining a pivot-forming spherical head (3) of a rod (1) in a cavity (5) is of substantially cylindrical shape having an annular groove (9). It consists of a first part (23) of hemispherical shape matched to the spherical head (3) a second part (25) of cylindrical shape matched to the shape of the cavity (5) and a third part (27) of substantially frustoconical shape, the free end (29) of which has a diameter larger than that of the cavity (5), longitudinal slots (31) being made in the second and third parts (25, 27), and the socket (21) being produced from an elastic material, such as a hard thermoplastic.