Inflatable plug for use in plugging a large diameter pipe

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

1993-08-09

1994-10-11

Scherbel, David A.

Pipes and tubular conduits

With closures and plugs

Inflatable

138 89, F16L 5512

Patent

active

053538420

ABSTRACT:
An inflatable plug adapted to be inserted into a pipe and inflated to plug the pipe and create therein a watertight seal. The inflatable plug includes a cylinder surrounded by a sleeve formed by layers of elastomeric material wrapped around the cylinder. The opposite ends of the sleeve are clamped to the cylinder ends. The inflatable plug also includes a fluid passage for supplying pressurized fluid between the cylinder and the elastomeric sleeve for inflating the elastomeric sleeve.

REFERENCES:
patent: 2678666 (1954-05-01), Theis et al.
patent: 3431946 (1969-03-01), Sawyer
patent: 4079755 (1978-03-01), Van der Lans
patent: 4203476 (1980-05-01), Vitellaro
patent: 4291727 (1981-09-01), Yie et al.
patent: 4354515 (1982-10-01), Sutherland
patent: 4467836 (1984-08-01), Ragout
patent: 4614206 (1986-09-01), Mathison et al.
patent: 4895185 (1990-01-01), Champleboux et al.

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