Brake booster

Details Brake booster Brake booster

1997-12-15

1999-04-13

Lopez, F. Daniel

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

F15B 910

Patent

active

058933166

ABSTRACT:
A brake booster includes a reaction transmitting means which includes a spring that is compressed when a brake reaction from a reaction disc exceeds a preset load. A holder is mounted on a valve body, and a brake reaction which is transmitted from the reaction disc is accepted by the valve body through the holder. A plate plunger is slidably fitted in the holder to allow a brake reaction which is transmitted to the reaction disc to be transmitted to the reaction transmitting means and the valve plunger through the plate plunger. A larger outer diameter can be chosen for the spring in order to achieve a preferred preset load, and a servo ratio can be freely established by the choice of areas of contact between the reaction disc on one hand and the holder and the plate plunger on the other hand.

REFERENCES:
patent: 3143926 (1964-08-01), Stelzer
patent: 3548595 (1970-12-01), Pech et al.
patent: 5031404 (1991-07-01), Flory et al.
Hindhede et al, "Coupling of Springs" in Machine Design Fundamentals (John Wiley & Sons, 1983) pp. 203-204.

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