Pipe plugging apparatus

Pipes and tubular conduits – With closures and plugs – Inflatable

Patent

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Details

F16L 5512

Patent

active

043985653

ABSTRACT:
An apparatus for plugging a pipe including an inflatable bag which is insertable into the pipe in a collapsed condition and which is inflatable therein to block the flow within the pipe. The bag is secured to a hollow tube having air outlet openings therein with the openings being positioned within the bag. A tubular member connects an air inlet opening of the hollow tube to an air compressor for transmitting compressed air through the hollow tube to thereby inflate the bag in order to plug the pipe. Preferably, an air valve is coupled between the air inlet opening of the hollow tube and the tubular member for controlling the flow of air into and out of the bag.

REFERENCES:
patent: 827835 (1906-08-01), White
patent: 1906151 (1933-04-01), Goodman
patent: 1946138 (1934-02-01), Gardner
patent: 2202321 (1940-05-01), Schuldt
patent: 2309429 (1943-01-01), Ahern
patent: 2336450 (1943-12-01), Voorhess et al.
patent: 3120859 (1964-02-01), Wakley
patent: 3459230 (1969-08-01), Smith
patent: 3498333 (1970-03-01), Jones
patent: 3805844 (1974-04-01), Bacon
patent: 3870085 (1975-03-01), Schneider

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