Inflatable apparatus for use in plugging a large diameter pipe

Details Inflatable apparatus for use in plugging a large diameter pipe Inflatable apparatus for use in plugging a large diameter pipe

1985-05-03

1986-01-21

Bryant, III, James E.

Pipes and tubular conduits

With closures and plugs

Inflatable

138 89, 138 40, 138 45, 138 46, 137318, 13735516, 312242, F16L 5512

Patent

active

045652228

ABSTRACT:
An inflatable plug adapted to be inserted into a pipe and inflated so as to plug the pipe and form a water tight seal. The inflatable plug is comprised of an inflatable bag of flexible sheet material forming an elongated cylinder having opposite ends. The material at the opposite ends of the cylinder is pleated or folded and wrapped around cylinders. Metal collars are placed over the folded material and swaged so as to clamp the material in fluid tight relation against the cylinders.

REFERENCES:
patent: 1180182 (1916-04-01), Petersen
patent: 2753876 (1956-07-01), Kurt
patent: 2755810 (1956-07-01), Kurt
patent: 3357193 (1967-12-01), Fitzgibbon
patent: 3714951 (1973-02-01), Lundman
patent: 4006948 (1977-02-01), Kessinger
patent: 4250609 (1981-02-01), Beaudoin
patent: 4380269 (1983-04-01), Petaway et al.
patent: 4458721 (1984-07-01), Yie et al.

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