Pumping device having inlet and outlet valves adjacent opposed s

Details Pumping device having inlet and outlet valves adjacent opposed s Pumping device having inlet and outlet valves adjacent opposed s

1989-11-02

1992-09-29

Smith, Leonard E.

Pumps

Expansible chamber type

Elongated flexible chamber wall progressively deformed

251 9, 417478, 417479, F04B 4312

Patent

active

051510197

ABSTRACT:
A pumping device controlling an amount of liquid passing through a length of tubing accommodated in the pumping device. The pumping device includes inlet and outlet valves located adjacent opposed sides of a tube deforming device. The valves are controllable for restricting the flow of liquid through the tubing, and the deforming device is such that the tubing is first deformed in one direction and then in another direction which tends to restore the original cross-sectional shape of the tubing.

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