Internal pump assembly

Details Internal pump assembly Internal pump assembly

1991-08-27

1993-06-22

Chambers, A. Michael

Fluid handling

Systems

With pump

137347, 137587, 2513353, 417375, 417401, A01M 700, F16K 2400

Patent

active

052209431

ABSTRACT:
An internal pump assembly including a fluid tank defining a fluid compartment, and first and second vessels positioned in the tank. The second vessel has a second vessel port through which fluid can flow relative to the fluid compartment. A bellows pump assembly positioned at least partially in the first vessel pumps fluid from the fluid compartment through the second vessel port into the second vessel from which the fluid can be subsequently removed. The fluid in the compartment acts on the bellows surface to thereby bias the pump assembly towards one of a pumping or a non-pumping position.

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