Well swab cups

Details Well swab cups Well swab cups

1979-10-16

1982-03-16

Croyle, Carlton R.

Expansible chamber devices

Piston

Side wall portion includes peripheral axially extending...

92254, 417555A, F16J 900

Patent

active

043195180

ABSTRACT:
A swab cup for oil wells is provided which comprises means by which the elastic side walls of the cups can be radially expanded almost throughout their entire length. The oil well swab cup has a substantially cylindrical uniform wall thickness resilient annular body having a multiplicity of parallel metallic longitudinal wires imbedded in its external periphery, the lower end of each wire terminating in a hook-like formation extending into relatively free articulation with a retainer wire ring imbedded in the lower end of the body.

REFERENCES:
patent: 1541166 (1925-06-01), Mowers
patent: 2466572 (1949-04-01), Bowerman et al.
patent: 3346267 (1967-10-01), Farley
patent: 4190108 (1980-02-01), Webber

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