Vacuum booster device

Details Vacuum booster device Vacuum booster device

1981-06-22

1984-01-31

Hershkovitz, Abraham

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

605471, 92 98D, 92102, 92165PR, F15B 910

Patent

active

044282745

ABSTRACT:
A vacuum type brake booster device comprising a booster shell, a booster piston accommodated in the booster shell, a piston diaphragm working together with the booster piston for dividing the booster shell into front and rear working chambers, and tie rods extending through the piston and the diaphragm for connection of the front and rear walls of the booster shell. The piston diaphragm is provided with reasonably arranged reinforcing beads integrally formed projected therewith for increasing the tensile rigidity of the diaphragm. Accordingly, the thrust force produced by the pressure difference between both the working chambers can be effectively transmitted from the piston diaphragm to the booster piston.

REFERENCES:
patent: 4256016 (1981-03-01), Thomas
patent: 4270353 (1981-06-01), Thomas
patent: 4325218 (1982-04-01), Weiler
patent: 4328738 (1982-05-01), Hamamatsu
patent: 4330996 (1982-05-01), Becht
patent: 4334459 (1982-06-01), Riedel
patent: 4339921 (1982-07-01), Schanz
patent: 4377966 (1983-03-01), Parker

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