Brake booster

Details Brake booster Brake booster

1989-04-21

1991-05-07

Wayner, William E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91376R, F15B 1316

Patent

active

050127233

ABSTRACT:
The invention relates to a brake booster of the type for motor vehicles comprising a casing and a diaphragm which divides the interior of the casing (5) sealingly into a front chamber and a rear chamber, a hollow piston (10) movable in the casing, an input member (14, 16) intended to be connected to a brake pedal (18), an output assembly (20, 26) intended to be connected to a piston of a master cylinder, and a reaction disk (32) made of a deformable material and arranged between the hollow piston (10) and the output assembly (20, 26), in order to receive the output force of the booster when it is put into operation, the output force causing a first deformation of the reaction disk (32), this deformation tending to push back the input member (14, 16). According to the invention, the output assembly (20, 26) is formed in two parts, one movable relative to the other counter to a spring means (36), in order to act on a reduced surface of the reaction disk ( 32).

REFERENCES:
patent: 4671167 (1987-06-01), Endo et al.

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