Counter-balanced pumping system

Machine element or mechanism – Elements – Guard mechanisms

Patent

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Details

166 75A, F16P 100

Patent

active

041977661

ABSTRACT:
The present disclosure sets out an improvement in counterbalanced pumping systems of the type described in my prior application Ser. No. 824,346 filed Aug. 15, 1977 wherein two mandrels are mounted on a common shaft which also is geared through a planetary gearing system to a drive motor. The mandrels play out, in opposing directions two spirally stacked sheave chains, one going to a well bore to support the pumping assembly therein, and the other being extended into a counterbalance pit to support a counterbalancing weight at the end thereof. The stacked mandrels are enclosed in a common housing which also includes the necessary turning rollers for directing the sheave chains into the respective bores, one end of the housing being attachable directly to the exposed end of the well pipe while the other end of the housing being supported on top of the counterbalance pit liner. The housing may thus form a leak-proof enclosure in which sufficient oil may be stored to lubricate the sheave chains and the mandrels. There being no further openings in the housing, other than those communicating with the two bores, unwarranted oil spillage is precluded thus observing the necessary environmental standards now in effect.

REFERENCES:
patent: 1288550 (1918-12-01), Forsyth
patent: 2295582 (1942-09-01), Ingwer
patent: 3793904 (1974-02-01), Grable

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