Pumping apparatus particularly for oil wells

Pumps – Motor driven – Relatively movable pumping members driven by relatively...

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Details

92137, 417539, F04B 1700

Patent

active

041474775

ABSTRACT:
A pair of pumps which are joined by a flexible connection passing over spaced rotatable devices positioned for rotation in a substantially vertical plane. The rotatable devices are driven alternately in clockwise and counterclockwise directions whereby the lifting of one pump occurs as the other pump is lowered. To facilitate the pumping operation, a counterweight is operatively associated with the flexible connection intermediate the pair of rotatable devices.

REFERENCES:
patent: 961039 (1910-06-01), Starr
patent: 1359644 (1920-11-01), Wright
patent: 1499240 (1924-06-01), Maury
patent: 1970620 (1934-08-01), Park
patent: 2229115 (1941-01-01), Murray
patent: 2341864 (1944-02-01), Grumbaugh
patent: 2613915 (1952-10-01), Stone
patent: 3464317 (1969-09-01), Woodward
patent: 3709105 (1973-01-01), Ridley

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