Method for repairing a pipe coupling

Details Method for repairing a pipe coupling Method for repairing a pipe coupling

1981-05-22

1982-11-09

Anderson, Philip E.

Plastic and nonmetallic article shaping or treating: processes

Repairing or restoring consumer used articles for reuse

264 469, 425 12, 425 13, B29D 2700

Patent

active

043584179

ABSTRACT:
Method of repairing a leaking bell and spigot joint employing a containment which is fit around the coupling to form a completely enclosed annular cavity. A premixed fluid composition comprising an acrylic, a resin, a filler, and a blowing agent is injected into the cavity. This hardens exothermically, providing heat to activate the blowing agent and expand the composition as it sets, forcing the composition into any irregularities to seal the leak and leave a pressurized acrylic sealing ring on the pipe.

REFERENCES:
patent: 3141478 (1964-07-01), Copeland
patent: 3350050 (1967-10-01), Buczala et al.
patent: 3356778 (1967-12-01), Anderson
patent: 3955043 (1976-05-01), Palmer et al.
patent: 4049480 (1977-09-01), Kutscake
patent: 4053176 (1977-10-01), Hilbush

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