Vertical tensioning and anti-rotational device for use with sing

Details Vertical tensioning and anti-rotational device for use with sing Vertical tensioning and anti-rotational device for use with sing

1993-11-09

1994-09-20

Bidwell, James R.

Conveyors: power-driven

Conveyor section

Endless belt strand or chain-like member to lift viscous fluid

B65G 1500

Patent

active

053481372

ABSTRACT:
A vertical tensioning and anti-rotational device for use with a single continuous rope conveyor lifting system, the lifting system having a series of powered pulleys disposed at the top of a well for continuously driving a rope in a closed loop into the well, into and out of downhole fluids, and back to the top of the well, carrying a portion of such fluids out of the well. The device includes a tubular body open at one end, and a tension bar telescoped into the open end. The tubular body and tension bar member are adapted to fit diametrically into a well bore. A spring biases the tension bar member away from the tubular body. Extension bar members are disposed on the opposite ends of the tubular body and tension bar member, and extend longitudinally axially along the walls of the well bore. Sharp-edged rollers are disposed on the upper and lower ends of the extension bar members. The spring biases the rollers against the walls of the well bore, and the rollers prevent the device from rotating. The conveyor rope loops around a sheave mounted near the center of the upper surface of the tubular body. A dead weight is attached near the center of the lower surface of the tubular body.

REFERENCES:
patent: 1799086 (1931-03-01), Laretta
patent: 2391642 (1945-12-01), Reed
patent: 2438298 (1948-03-01), Reed
patent: 2693759 (1954-11-01), Abellanet
patent: 2704981 (1955-03-01), Gustafson
patent: 3774685 (1973-11-01), Rhodes
patent: 4636145 (1987-01-01), Donaldson
patent: 5048670 (1991-09-01), Crafton et al.
patent: 5080781 (1992-01-01), Evins, IV

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