Diaphragm pump having auxiliary chamber

Details Diaphragm pump having auxiliary chamber Diaphragm pump having auxiliary chamber

1975-09-17

1976-08-17

Freeh, William L.

Pumps

Including separate port on noncyclic valve for draining pump...

F04B 3900

Patent

active

039751198

ABSTRACT:
An improved diaphragm pump including motor driven reciprocating means secured at its outboard end to a flexible diaphragm spanning a pump cavity defined by a pump head including an integrally formed auxiliary chamber provided with valve means adapted to depressurize the pump cavity and the downstream side of the pumping system and to drain the downstream side of the system preparatory to dismantling the pump.

REFERENCES:
patent: 2203828 (1940-06-01), Larson
patent: 2295774 (1942-09-01), Corydon
patent: 2555627 (1951-06-01), Baker
patent: 2916998 (1959-12-01), Miller
patent: 3153347 (1964-10-01), Scholze
patent: 3529805 (1970-09-01), Callahan, Jr.

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