Brake booster

Details Brake booster Brake booster

1987-09-16

1988-11-29

Garrett, Robert E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

92 48, 91376R, F15B 910

Patent

active

047872926

ABSTRACT:
The invention relates to a locking arrangement for a key member used in a brake booster. A key member includes an arcuate portion which surrounds substantially one-half the perimeter of a valve body, and engaging recesses are formed at the opposite ends of the arcuate portion on the inner side. A retainer surrounds substantially one-half the perimeter of the valve body at a location opposite to the arcuate portion of the key member. The opposite ends of the retainer are formed with engaging pawls on the outer side for engaging with the engaging recesses under the resilience of the retainer. Accordingly, by merely assembling the key member and the retainer with the valve body, the engaging pawls of the retainer can be automatically engaged with the engaging recesses in the key member, thereby preventing the withdrawal of the retainer and the key member from the valve body.

REFERENCES:
patent: 3249021 (1963-10-01), Wuellner
patent: 3688647 (1972-09-01), Kyita
patent: 3958497 (1976-05-01), Gardner et al.
patent: 4348944 (1982-09-01), Ochiai
patent: 4394832 (1983-07-01), Weiler et al.
patent: 4394833 (1983-07-01), Weiler et al.
patent: 4512237 (1983-01-01), Endoh et al.
patent: 4567812 (1984-02-01), Weiler et al.
patent: 4619185 (1984-12-01), Mori et al.

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