Pipeline pig with longitudinally incompressible member

Details Pipeline pig with longitudinally incompressible member Pipeline pig with longitudinally incompressible member

1977-01-14

1978-04-11

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Implements

Pipe, tube, or conduit cleaner

137268, B08B 904

Patent

active

040830764

ABSTRACT:
A pipeline pig of the type to be propelled through a pipeline by a pressure gradient in the line to clear accumulations and deposits of sludge, scale and other material from the walls of the pipe. The pig includes an elongated cylindrical foamed elastomer body member and a substantially incompressible column member, located generally co-axially within, and with ends extending beyond the ends of, the body member.

REFERENCES:
patent: 1218005 (1917-03-01), Schlemmer
patent: 2188959 (1940-02-01), Schaer
patent: 2244076 (1941-06-01), Moe
patent: 3266076 (1966-08-01), Surber
patent: 3538531 (1970-11-01), Knapp et al.
patent: 3725968 (1973-04-01), Knapp et al.
patent: 3875606 (1975-04-01), Landers

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