Rolling diaphragm vacuum control with check valve

Details Rolling diaphragm vacuum control with check valve Rolling diaphragm vacuum control with check valve

1982-11-18

1984-08-21

Rosenthal, Arnold

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

13762538, 251DIG2, F16K 702, F16K 31126

Patent

active

044664559

ABSTRACT:
A vacuum controller for maintaining a defined vacuum pressure to a remote location, including a housing which defines a cavity. The controller includes means for connecting the cavity to the remote location, to a high vacuum, and to a control signal pressure. There is a cup-shaped plunger, having an opening in its side wall, which is adapted to reciprocate in the cavity, and there is a flexible diaphragm which seals between the housing and the plunger. The diaphragm also operates as a valving mechanism, such that, when the plunger moves in one direction, the diaphragm closes off the opening in the side wall of the plunger, and when the plunger moves in the other direction, it opens the opening. There is a check valve in said controller to prevent inversion of the diaphragms.

REFERENCES:
patent: 2720218 (1955-10-01), Otto
patent: 2720378 (1955-10-01), Otto
patent: 3070108 (1962-12-01), Fischer
patent: 3766933 (1973-10-01), Nicholson, Jr.
patent: 4092998 (1978-06-01), Taplin

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