Plug for blocking a branched pipe opening

Details Plug for blocking a branched pipe opening Plug for blocking a branched pipe opening

1992-09-30

1994-08-02

Bryant, III, James E.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

138 92, 138 94, 138 98, F16L 5516

Patent

active

053336496

ABSTRACT:
An apparatus for blocking the openings of a branched pipe (2) in a branched portion of a pipeline (1) prior to lining the inner surface of the pipeline (1) with a tubular lining material (100) for maintenance/repair or reinforcement purposes includes a spring-biased plug-housing assembly which carries a plurality of plugs for blocking the branch pipe openings. The plugs are installed one at a time into the branch pipe openings and are retained in the openings by a friction fit. The plug-housing assembly dispenses one plug at a time without the possibility of inadvertent dispensing of the remaining unused plugs. The plugs have cut-away portions in the outer periphery thereof, which cut-away portions cooperate for storage and installation purposes with struts on the plug-housing assembly.

REFERENCES:
patent: 602743 (1898-04-01), Glidden
patent: 645502 (1900-03-01), Carpenter
patent: 4262701 (1981-04-01), Beacom

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