Pipeline plugging apparatus

Details Pipeline plugging apparatus Pipeline plugging apparatus

1976-01-19

1978-03-07

Aegerter, Richard E.

Pipes and tubular conduits

With closures and plugs

Inflatable

138 89, 138 97, F16L 5512

Patent

active

040774350

ABSTRACT:
Apparatus for plugging a pipeline may comprise: a tubular body; seal assemblies carried by the body for moving the body through the pipeline in response to fluid flow therethrough and for sealing between the body and pipeline; an internal valve carried by the body for establishing fluid communication between downstream and upstream portions of the pipeline; and a stop device extendable into the pipeline for arresting movement of the body and for operating the internal valve. A method is disclosed for utilizing the apparatus.

REFERENCES:
patent: 2130030 (1938-09-01), Richardson
patent: 3285290 (1966-11-01), Morrison
patent: 3298399 (1967-01-01), Slade
patent: 3431946 (1969-03-01), Sawyer
patent: 3483895 (1969-12-01), Barto
patent: 3495626 (1970-02-01), Nagel
patent: 3503424 (1970-03-01), Sawyer
patent: 3561490 (1971-02-01), Little
patent: 3690348 (1972-09-01), Patterson
patent: 3726319 (1973-04-01), Patterson

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