Pump for pressurizing control system

Details Pump for pressurizing control system Pump for pressurizing control system

1997-12-16

2000-04-25

Freay, Charles G.

Pumps

Expansible chamber type

Plural pumping chambers

417532, F04B 2304

Patent

active

060537116

ABSTRACT:
Pump to supply fluid to at least two circuits in a control system for a production well. Each of the circuits is maintained at different pressures. The pump provides fluid to a plurality of poppets that are opened or closed depending on the positions of a cam surface which controls the position of the poppet. A pressure relief valve is used to prohibit fluid from entering a circuit unless the pressure exceeds the pressure of the fluid in the control circuit. The cam surfaces are controlled by a knob rotatable by an operator. By rotating the knob, the poppets can be opened or closed so as to provide fluid sequentially to each of the circuits and pressurize each circuit individually.

REFERENCES:
patent: 895666 (1908-08-01), Nelson
patent: 904557 (1908-11-01), Nelson
patent: 3713291 (1973-01-01), Kubik
patent: 3771912 (1973-11-01), Conlee
patent: 4596375 (1986-06-01), Hurta et al.
"Baker CAC" brochure. 3 page brochure. 1989-1990.
ENERPAC "High Force Hydraulic Tools" brochure. 3 page brochure. 1994.
"Power Team" brochure. 3 page brochure. 1997.

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