Multi-diaphragm metering pump

Details Multi-diaphragm metering pump Multi-diaphragm metering pump

1992-11-02

1994-01-18

Bertsch, Richard A.

Pumps

Motor driven

Fluid motor

417395, F04B 1700

Patent

active

052795047

ABSTRACT:
A multi-diaphragm metering pump having first and second diaphragms mounted in a body in substantially parallel relationship, wherein an open fluid communication path is provided within the body between adjacent sides of the diaphragms and wherein each diaphragm forms a sealed wall within the body. A diaphragm stem connects the diaphragms, such that movement of the first diaphragm will cause movement of the second diaphragm substantially in unison. A source of pressurized fluid is intermittently injected into and exhausted from a remote side of the first diaphragm, thereby causing cyclical movement of the two diaphragms, whereby a transient fluid may be pumped on the remote side of the second diaphragm by the cyclical movement. In a preferred embodiment, a sealed enclosure is formed between the two diaphragms.

REFERENCES:
patent: 3205830 (1965-09-01), Clack
patent: 3312172 (1967-04-01), Harklau et al.
patent: 3814548 (1974-06-01), Rupp
patent: 4761118 (1988-08-01), Zanarini
patent: 4830586 (1989-05-01), Herter et al.
patent: 4856969 (1989-08-01), Forsythe et al.

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