Double diaphragm operated reversing valve pump

Details Double diaphragm operated reversing valve pump Double diaphragm operated reversing valve pump

1980-09-29

1983-06-07

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

417395, 91311, 91313, 91323, F04B 4306

Patent

active

043868886

ABSTRACT:
A reciprocating fluid pump has a dual piston element and dual diaphragms in fluid communication therewith. Full movement of the dual piston element in either direction of movement causes movement of a pilot valve which simultaneously vents a first working chamber located in the direction of movement of the dual piston element and occasions reciprocating movement of the dual diaphragms, thereby directing a pump power medium to a second working chamber to cause movement of the dual piston element in the opposite direction.

REFERENCES:
patent: Re7420 (1876-12-01), Cameron
patent: 16358 (1857-01-01), Fletcher
patent: 400401 (1889-03-01), Gutzkow
patent: 2679209 (1954-05-01), Fischer et al.
patent: 2780177 (1957-02-01), Hoenecke
patent: 2942554 (1960-06-01), Gilchrist
patent: 3064582 (1962-11-01), Knights
patent: 3791768 (1974-02-01), Wanner
patent: 3838946 (1974-10-01), Schall
patent: 4123204 (1978-10-01), Scholle

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