Diaphragm pump construction having pulsator piston and mechanica

Details Diaphragm pump construction having pulsator piston and mechanica Diaphragm pump construction having pulsator piston and mechanica

1977-05-11

1980-01-22

Croyle, Carlton R.

Pumps

Motor driven

Including means for facilitating assembly or disassembly of...

417387, 417388, F04B 908, F04B 3502

Patent

active

041848098

ABSTRACT:
A piston diaphragm pump includes a driving fluid chamber and a driven fluid chamber. A flexible diaphragm separates the fluid chambers from one another. An electric motor drives a reciprocating piston through a crankshaft, and the piston moves in the driving fluid chamber from a forward position to a rearward position on a suction stroke and from the rearward position to the forward position on a pressure stroke. An inlet passage extends between a crankcase and the driving fluid chamber, and a normally closed inlet valve in the inlet passage is opened by a cam on the crankshaft when the piston reaches a predetermined position on its suction stroke. The driving fluid in the driving fluid chamber drives the flexible diaphragm back and forth, and the back and forth movement of the diaphragm pumps the driven fluid into and out of the driven fluid chamber.

REFERENCES:
patent: 2227593 (1941-01-01), Lawrence
patent: 2578746 (1951-12-01), Scherger et al.
patent: 2585172 (1952-02-01), Reynolds
patent: 2839002 (1958-06-01), Williams
patent: 2975599 (1961-03-01), Bennett
patent: 3149469 (1964-09-01), Williams
patent: 3374750 (1968-03-01), Hetz
patent: 3680981 (1972-08-01), Wagner
patent: 3910727 (1975-10-01), Flynn et al.
patent: 3925988 (1975-12-01), Kelley

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