Double-cone device and pump

Details Double-cone device and pump Double-cone device and pump

2006-07-18

2006-07-18

Neuder, William (Department: 3672)

Wells

Processes

Producing the well

C166S105000, C137S842000

Reexamination Certificate

active

07077207

ABSTRACT:
The performance of a double-cone device (1) is increased, not only by moving the gap or inlet openings (22) a short distance into the exit cone (47), but also by making the conicity θ3(55) of the so-formed small diffuser less than the conicity θ2(109) of the remaining part (53) of the exit cone. Double cone units (7, 60), particularly the ones with this improved diffuser, may be used in pump installations (1, 60), like well-pumps (1), where liquids must be pumped from great depths.

REFERENCES:
patent: 4603735 (1986-08-01), Black
patent: 4792284 (1988-12-01), Straub et al.
patent: 5488993 (1996-02-01), Hershberger
patent: 6701960 (2004-03-01), Stark et al.
patent: 001243748 (2002-09-01), None
patent: WO 01 16493 (2001-03-01), None

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