Pipeline pig construction including threaded mandrel and nut for

Details Pipeline pig construction including threaded mandrel and nut for Pipeline pig construction including threaded mandrel and nut for

1986-10-23

1988-02-23

Roberts, Edward L.

Brushing, scrubbing, and general cleaning

Implements

Pipe, tube, or conduit cleaner

B08B 904

Patent

active

047260890

ABSTRACT:
A pipeline pig is disclosed, the preferred embodiment incorporating all plastic components including a central elongate mandrel being hollow along the middle to a forward transverse partition, a nut which threads to the forward end of said mandrel, said nut and mandrel locking together to secure components on said mandrel. The device further supports N cups, the cups preferably backed by adjacent discs for stiffening purposes and being spaced along the mandrel by spacer means. Scrapper discs can be used with the leading disc being harder & smaller while scrapping discs are softer and larger.

REFERENCES:
patent: 3604041 (1971-09-01), Ver Nooy
patent: 4275475 (1981-06-01), Schwartz et al.
patent: 4365379 (1982-12-01), Neff
patent: 4506401 (1985-03-01), Knapp

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