Variable output pump adjustment mechanism

Details Variable output pump adjustment mechanism Variable output pump adjustment mechanism

1993-03-01

1994-03-22

Bertsch, Richard A.

Pumps

Condition responsive variable volumetric capacity expansible...

417439, F04B 4900

Patent

active

052958078

ABSTRACT:
An auxiliary chamber is connected to the main pumping chamber of a liquid dispensing pump. The auxiliary chamber includes a resilient rolling diaphragm in fluid communication with the fluid in the main pumping chamber and is expandable for receiving liquid from the main pumping chamber during an output stroke with an adjustable stop member being located behind the diaphragm for restricting the displacement of the diaphragm by the volume of fluid entering the secondary chamber from the pumping chamber and thus controlling the output from the pump by controlling the net internal pump chamber volume.

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patent: 4431379 (1984-02-01), Langdon
patent: 4560326 (1985-12-01), Seki
patent: 4594059 (1986-06-01), Becker

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