Three chamber brake booster with variable pressure passages havi

Details Three chamber brake booster with variable pressure passages havi Three chamber brake booster with variable pressure passages havi

1989-07-17

1991-01-15

Look, Edward K.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

92 49, 92 98D, 921691, F15B 910

Patent

active

049845071

ABSTRACT:
A brake booster of triple type comprises a shell in which constant pressure and variable pressure chambers are formed. According to the invention, individual variable pressure chambers defined within the shell communicate with a valve mechanism through respective variable pressure passages having a minimum channel length. In this manner, hydraulic fluid contained within the respective variable pressure chambers which communicate with the associated variable pressure passages can be rapidly displaced through the valve mechanism, thus preventing an operational lag in terminating the brake action in a favorable manner.

REFERENCES:
patent: 3103855 (1963-09-01), Hager et al.
patent: 4512237 (1985-04-01), Endoh et al.
patent: 4596178 (1986-06-01), Sugiura
patent: 4747336 (1988-05-01), Uyama
patent: 4787292 (1988-11-01), Tsuyuki et al.
patent: 4794849 (1989-01-01), Kobayashi
patent: 4811653 (1989-03-01), Kobayashi et al.
patent: 4813337 (1989-03-01), Endo
patent: 4882980 (1989-11-01), Arino et al.

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