Pipeline pig

Details Pipeline pig Pipeline pig

1979-11-02

1981-06-30

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Implements

Pipe, tube, or conduit cleaner

137268, B08B 904

Patent

active

042754755

ABSTRACT:
A pipeline pig having a shaft of flexible plastic with an enlarged head portion, a plurality of dish members of flexible plastic, a plurality of flexible spacers, the dish member and spacers each having an axial opening therethrough receiving the shaft, each spacer having an integral cup portion at one end, two spacers being received on the shaft in back-to-back relationship between adjacent dish members, and a retainer member on the shaft adjacent the rearward end holding the dish members and spacers in engagement with each other, and thereby holding the dish members in spaced apart relationship, the dish members being of an outside diameter configured to closely correspond with the inside diameter of the pipeline in which the pig is used.

REFERENCES:
patent: 2392144 (1946-01-01), Hall
patent: 4083074 (1978-04-01), Curtis

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