Abstract: A braking device including a housing mounted in relative rotation relative to a shaft, braking discs, a braking piston adapted to stress the braking discs, a spring washer mounted on the brake housing on a support zone located on one of the peripheries of its first face, and having on its second face a braking support zone, which cooperate with the braking piston so as to stress the braking discs according to a braking direction. An unbraking piston is adapted to stress the washer according to a direction opposite said braking direction. The spring washer has an unbraking support zone with the unbraking piston on the other of the peripheries of the second face of the spring washer. The braking support zone is located at an intermediate position of the at least one spring washer.

Abstract: The present invention relates to a braking device comprising a housing mounted in relative rotation relative to a shaft, first braking means, attached to the brake housing, second braking means attached to the shaft, adapted to cooperate with said first braking means, a braking piston adapted to stress said first braking means, at least one spring washer comprising two faces, an internal periphery and an external periphery, said spring washer being mounted supported on the brake housing according to a housing support zone located on one of the peripheries of the first face of said spring washer, said spring washer having on its second face a braking support zone, adapted to cooperate with the braking piston so as to stress the first braking means according to a braking direction, said device being characterised in that: it comprises an unbraking piston, adapted to stress the elastic means according to a direction opposite said braking direction, the at least one spring washer has an unbraking support zon