Diaphragm type vacuum actuator

Details Diaphragm type vacuum actuator Diaphragm type vacuum actuator

1985-04-03

1986-07-01

Garrett, Robert E.

Motors: expansible chamber type

With motive fluid valve

For double-acting motor

92 98D, 92100, 92185, F15B 910

Patent

active

045973202

ABSTRACT:
A diaphragm type vacuum actuator movably providing in a case a rod having piston plates, the piston plates being connected to an inner peripheral surface of the case by means of two diaphragms so as to divide a case inside into a first chamber and a second chamber and form an intermediate chamber in between the both diaphragms, and the rod being made movable by subjecting one of said first and second chambers to vacuum and by opening the other thereof to atmospheric pressure; characterized by that air passages are formed in the piston plates, one ends of the air passages are interconnected to the intermediate chamber, and the other ends thereof are interconnected to chambers under atmospheric pressure.

REFERENCES:
patent: 905 (1838-09-01), Horton
patent: 3311029 (1967-03-01), Kimble
patent: 4211152 (1980-07-01), Colletti et al.
patent: 4286932 (1981-09-01), Nagano et al.
patent: 4387626 (1983-06-01), Myers

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