Pipeline pig

Details Pipeline pig Pipeline pig

1973-05-30

1978-01-24

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Implements

Pipe, tube, or conduit cleaner

166153, B08B 904

Patent

active

040695352

ABSTRACT:
The specification discloses a pipeline pig comprising an elongated cylindrical member having a front end and a rear end; a plurality of spaced annular flexible rings circumscribing the member and extending radially outward from the member for contacting the inside wall of the pipeline; and an elongated central aperture extending from the rear end of the member to a point beyond its midpoint and near the front end thereof for receiving fluid pressure to facilitate movement of the pig through a pipeline.

REFERENCES:
patent: 1756378 (1930-04-01), Oberhuber
patent: 1855646 (1932-04-01), Oberhuber
patent: 2156260 (1939-05-01), Crothers
patent: 2763017 (1956-09-01), Redin
patent: 3056156 (1962-10-01), Immel
patent: 3102595 (1963-09-01), Fisher, Jr. et al.

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