Pneumatic servomotor for power-assisted braking, the...

Details Pneumatic servomotor for power-assisted braking, the... Pneumatic servomotor for power-assisted braking, the...

2007-03-27

2007-03-27

Nguyen, Hoang (Department: 3748)

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

C091S37600A, C092S099000

Reexamination Certificate

active

10959475

ABSTRACT:
A pneumatic servomotor (12) for power-assisted braking for a motor vehicle, which servomotor is of the type having a substantially cylindrical rigid casing (16) inside which a moving transverse partition (18) is movably mounted that has a peripheral skirt (28) which is made of sheet metal and which is covered, at least in the vicinity of its periphery (40), with a sealing diaphragm (30) made of an elastomer material and whose periphery (32) is fixed to the casing (16) in leaktight manner, said servomotor being characterized in that, in the vicinity of the periphery (40) of the skirt (28), the skirt is provided with a stamped annular recess (42) defining an internal groove (44) which serves to receive snugly a peripheral bead (46) which projects from the surface of the diaphragm (30) in order to fix the diaphragm (30) to the skirt (28) in leaktight manner.

REFERENCES:
patent: 2680349 (1954-06-01), Hill et al.
patent: 3037487 (1962-06-01), Brooks
patent: 3165031 (1965-01-01), Rockwell
patent: 4270353 (1981-06-01), Thomas et al.
patent: 4366612 (1983-01-01), Dorsett et al.
patent: 5228377 (1993-07-01), Watanabe
patent: 6829976 (2004-12-01), Wake

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