Pneumatically operated and controlled fluid pump

Details Pneumatically operated and controlled fluid pump Pneumatically operated and controlled fluid pump

1992-01-22

1993-09-28

Bertsch, Richard A.

Pumps

One fluid pumped by contact or entrainment with another

Liquid pumped by supplying or exhausting gaseous motive...

417145, F04B 4704

Patent

active

052482430

ABSTRACT:
A pneumatically operated and controlled pump which is capable of maintaining its efficiency and reliability in various environments. The pump head contains a spool and sleeve valve assembly operated in response to a signal pressure. The assembly controls the cycling of the pump through a pumping phase and a pump filling phase. A timing switch on the surface controls the occurrence of the signal pressure and thus the pump cycles, at preset intervals thus eliminating any lag time between the cycles and the need for operator estimations of the cycle times. This results in a virtually closed system and self contained unit.

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patent: 4305700 (1981-12-01), Beard
patent: 4990061 (1991-02-01), Fowler

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