Diaphragm pump

Details Diaphragm pump Diaphragm pump

1980-03-18

1983-03-01

Smith, Leonard E.

Pumps

Motor driven

Fluid motor

417199A, 417205, 417477, 417571, 417395, F04B 4306, F04B 4312, F04B 2102

Patent

active

043753469

ABSTRACT:
A diaphragm pump is described comprising a reciprocated diaphragm for expanding and contracting a chamber communicating with a passageway connecting the housing inlet and outlet for pumping a fluid therethrough, and a pair of check valves in the passageway permitting the fluid to flow only from the inlet to the outlet. The check valves are disposed along laterally-spaced parallel axes and provide a forward fluid flow through both valves in the same direction along the laterally-spaced parallel axes, the outlet of one check valve communicating with the inlet of the other via a folded section of the passageway having two 180.degree. bends. Such an arrangement enables the diaphragm pump to be constructed in compact and/or miniaturized form.
According to another described feature, the diaphragm pump is constructed in combination with the peristaltic pump having an inlet for a liquid to be pumped, and an outlet connected to the inlet of the diaphragm pump. Both pumps are driven by a common drive shaft.

REFERENCES:
patent: 2260180 (1941-10-01), Herder
patent: 2578746 (1951-12-01), Scherger et al.
patent: 2657636 (1953-11-01), Schmidt
patent: 3579124 (1971-08-01), Adams
patent: 3612727 (1971-10-01), Drake
patent: 3644061 (1972-02-01), McFarlin
patent: 3723030 (1973-03-01), Gelfand
patent: 3775030 (1973-11-01), Wanner
patent: 4116589 (1978-09-01), Rishton

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