Pumping by wire elongation

Details Pumping by wire elongation Pumping by wire elongation

1975-08-28

1977-04-19

Freeh, William L.

Pumps

Motor driven

417545, F04B 1700

Patent

active

040185478

ABSTRACT:
Pumping in oil wells and like application is carried out in a noiseless manner with efficient utilization of energy by raising the plunger or piston in a subsurface pump piston with a long metal rod or cable capable of undergoing memory shape change as a function of a martensitic transformation when worked by application of stress, preferably by gravity through an attached weight, while cold to elongate itself and, upon application of heat thereto, reversing the transformation and contracting in length to raise the piston and associated equipment plus fluid load.

REFERENCES:
patent: 767454 (1904-08-01), Taylor
patent: 2317166 (1943-04-01), Abrams
patent: 2838007 (1958-06-01), Johnston
patent: 2842067 (1958-07-01), Stevens
patent: 3483748 (1969-12-01), Rogen et al.
patent: 3547083 (1970-12-01), Pet erson

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