Inflatable internal pipe obturator with hardenable core

Details Inflatable internal pipe obturator with hardenable core Inflatable internal pipe obturator with hardenable core

1982-06-15

1984-03-13

Shepperd, John W.

Pipes and tubular conduits

With closures and plugs

Inflatable

F16L 5510

Patent

active

044361203

ABSTRACT:
The invention relates to an internal obturator for a pipe, particularly for a hydrocarbon conveying pipe-line, which comprises a central core and a flexible inflatable sleeve surrounding the core, wherein the central core comprises a flexible casing filled with a hardenable material which is hardened after its introduction into the flexible casing. The hardenable material may be hardened before or after insertion of the obturator into a pipe.

REFERENCES:
patent: 2474047 (1949-06-01), Gorzkowski
patent: 3190679 (1965-06-01), Lester
patent: 3338499 (1967-08-01), Gilbert
patent: 3340336 (1967-09-01), Bender
patent: 3473572 (1969-10-01), Nielson et al.
patent: 3805844 (1974-04-01), Bacon
patent: 4245970 (1981-01-01), St. Onge

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