Vacuum-operated brake power booster having diaphragm edge bead r

Details Vacuum-operated brake power booster having diaphragm edge bead r Vacuum-operated brake power booster having diaphragm edge bead r

1986-10-10

1988-03-08

Walton, George L.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91376R, 92 98D, 92 99, F15B 910, F16J 302

Patent

active

047292873

ABSTRACT:
A vacuum operated brake power booster including a retaining member for securing the edge bead of a moveable wall diaphragm of the booster to the booster control valve is disclosed. The booster includes a casing subdivided into two chambers by a moveable wall having a diaphragm which has an internal edge bead disposed in an annular groove in the control valve housing of the booster. An annular retention ring surrounds the bead of the diaphragm to the outside of the bead and radially retains the edge bead within the control valve housing groove.

REFERENCES:
patent: 3754450 (1973-08-01), Putt et al.
patent: 4043251 (1977-08-01), Ohmi
patent: 4399735 (1983-08-01), Katagiri et al.
patent: 4400942 (1983-08-01), Reinartz et al.
patent: 4538503 (1985-09-01), Hachiro
patent: 4586427 (1986-05-01), Thiel
patent: 4641568 (1987-02-01), Boehm et al.

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