Brushing – scrubbing – and general cleaning – Implements – Pipe – tube – or conduit cleaner
Patent
1979-04-17
1981-01-13
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Implements
Pipe, tube, or conduit cleaner
B08B 904
Patent
active
042440734
ABSTRACT:
A pipeline pig including a generally cylindrically shaped body formed of an elastic material, the body having a diameter larger than the internal diameter of a pipeline into which the pig is to be thrusted, and a conical portion provided at the forward end of the body, the pig comprising a plurality of spaced pin shaped metal members provided on the peripheral surface of the body, each of the pins including a heat portion protruding outwardly from the body, a shaft portion radially embedded in the body and an anchoring portion provided at the inner end of the pin, and the pins being made of a material not as hard as that of the pipeline and somewhat harder than that of the substance to be removed or scraped by the pig from the pipeline.
REFERENCES:
patent: 3543323 (1970-12-01), Girard
patent: 4016620 (1977-04-01), Powers
patent: 4077079 (1978-03-01), Knapp
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