Pipeline plug

Details Pipeline plug Pipeline plug

1999-02-22

2000-08-08

Brinson, Patrick

Pipes and tubular conduits

With closures and plugs

Inflation stem type

138 90, F16L 5510

Patent

active

060986646

ABSTRACT:
A pipeline plug is disclosed having an elastomeric disc-shaped sealing element provided with deforming means whereby the outside diameter of the elastomeric element is deformed to reduce its outside diameter to facilitate its insertion onto a pipeline. In another embodiment described, the plugging element and the deforming means are so arranged that when the deforming means act on the element, the latter is expanded into a sealing arrangement. The plugging elements are shown at one end of a spool assembly with resilient guide means to permit movement of the plug through a pipeline, but the plugging elements and their deforming means can also be used separately.

REFERENCES:
patent: 4262702 (1981-04-01), Streich
patent: 4292004 (1981-09-01), Knox
patent: 4462430 (1984-07-01), Anthony et al.
patent: 4494584 (1985-01-01), Rognoni
patent: 4498811 (1985-02-01), Fern et al.
patent: 4687026 (1987-08-01), Westman
patent: 4875615 (1989-10-01), Savard

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