Pneumatic diaphragm pump

Details Pneumatic diaphragm pump Pneumatic diaphragm pump

1995-10-30

1997-09-23

McAndrews, Roland

Pumps

Motor driven

Fluid motor

417566, 417DIG1, F04B 43073

Patent

active

056697643

ABSTRACT:
An integral valve diaphragm pump has a first rigid layer, a second rigid layer and a flexible membrane therebetween. Concave surfaces in the two rigid layers form a pump. The pump includes an actuating chamber which is alternately connected to a source of pressure and a source of vacuum. A pump chamber is connected to a fluid source and a fluid receiver through a filling check valve and a dispensing check valve, respectively. Duckbill and spring loaded ball check valves are disclosed.

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