Self-boosting pneumatic booster using a pivoting key

Details Self-boosting pneumatic booster using a pivoting key Self-boosting pneumatic booster using a pivoting key

2006-07-18

2006-07-18

Look, Edward K. (Department: 3745)

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

C091S369400

Reexamination Certificate

active

07077051

ABSTRACT:
A pneumatic booster operated by a plunger (9) housed in a bore (61) and bearing on a moving seat (102) which co-operates selectively with a shut-off member (111). The shut-off member (111) is capable of selective co-operating with a stationary seat (101). The plunger (9) being characterized by a cylindrical body (91) and a ring (92). The ring (92) sliding between a front stop (911) and a rear stop (912) on the cylindrical body (91). A front section of the ring (92) being located between the cylindrical body (91) and the bore (61) while a rear section (922) is designed to bear against the moving seat (102). The ring (92) being temporarily retained in a stationary position in the bore (61) independent of any movement of the cylindrical body (91) through the action of a pivoting key (13) and an elastic snap ring (141) to allow permit and extended actuation of the booster after a sharp braking action has occurred.

REFERENCES:
patent: 4366744 (1983-01-01), Katagiri et al.
patent: 4934249 (1990-06-01), Gautier et al.
patent: 5176063 (1993-01-01), Levrai et al.
patent: 5483866 (1996-01-01), Schluter
patent: 5857399 (1999-01-01), Tsubouchi et al.
patent: 5873247 (1999-02-01), Schluter et al.
patent: 6138548 (2000-10-01), Gautier et al.

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