Sealing members

Details Sealing members Sealing members

1974-12-05

1979-07-10

Footland, Lenard A.

Pipes and tubular conduits

With closures and plugs

Inflatable

277 343, F16L 5512

Patent

active

041604644

ABSTRACT:
A sealing member for insertion into a bore of a pipe comprising a flexible inflatable toroidal bag which when inflated expands radially outward to contact the bore of the pipe and expands radially inwards to obturate the pipe.

REFERENCES:
patent: 1814677 (1931-07-01), Fennema
patent: 2822192 (1958-02-01), Beatty
patent: 2843349 (1958-07-01), Meyer
patent: 3121570 (1964-02-01), Gilbert
patent: 3276481 (1966-10-01), McNulty
patent: 3884261 (1975-05-01), Clynch
patent: 4013097 (1977-03-01), Calandra

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