Reaction force mechanism for brake power servo booster

Details Reaction force mechanism for brake power servo booster Reaction force mechanism for brake power servo booster

1983-09-27

1985-08-20

Garrett, Robert E.

Power plants

Pressure fluid source and motor

Pulsator

60562, 91369A, 91376R, B60T 1320, F15B 910

Patent

active

045355916

ABSTRACT:
A reaction force mechanism for a brake power booster includes an elastic member (53) which forms a hydraulic pressure reaction force chamber (50) and is spaced from an end surface (17d) of an input shaft (17) by a predetermined distance (.delta.) so that braking hydraulic pressure is not immediately detected by a driver. In addition, a passage (57) normally provides communication between the hydraulic pressure reaction force chamber and a primary side pressure chamber (45) of the master cylinder, and, alternatively, provides communication between the hydraulic pressure reaction force chamber and a secondary side pressure chamber (46) of the master cylinder when no hydraulic pressure is established in the primary side pressure chamber of the master cylinder.

REFERENCES:
patent: 2929216 (1960-03-01), Stelzer
patent: 2957454 (1960-10-01), Stelzer
patent: 3246579 (1966-04-01), Kellogg
patent: 3252382 (1966-05-01), Kellogg et al.
patent: 3911681 (1975-10-01), Sisco
patent: 4072014 (1978-02-01), Gardner
patent: 4400943 (1983-08-01), Belart

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