Vacuum brake force booster

Details Vacuum brake force booster Vacuum brake force booster

1985-01-14

1987-09-15

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

60554, 60562, B60T 1300

Patent

active

046930833

ABSTRACT:
A vacuum brake force booster is provided wherein the pressure column above the immersing valve plunger of the dual valve contained in the piston chamber, in the applied position, generates a reaction force imparting to the vehicle drive the feeling of the extent of deacceleration. In addition to the valve plunger coupled to the push rod of the brake pedal, the control housing in the piston chamber is displaceable in the brake housing along with the movable wall and acts as a plunger piston. For this purpose, the control housing is sealingly passed through a wall of the master cylinder. The intermediate piston separating the two piston chambers in the master cylinder at the front side thereof facing the valve piston is provided with a rubber reaction disc. The valve plunger and the control housing or a sleeve cooperating with the control housing, in the event of a failure of one of the brake circuits, will abut the reaction disc.

REFERENCES:
patent: 3321915 (1967-05-01), Martin
patent: 3422622 (1969-01-01), Arentoft
patent: 3470695 (1969-10-01), Kilb
patent: 3473329 (1969-10-01), Eggstein
patent: 3910047 (1975-10-01), Grabb
patent: 4033131 (1977-07-01), Gardner
patent: 4091619 (1978-05-01), Carre 60562

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