Mold useful in sealing leaks in pipes

Details Mold useful in sealing leaks in pipes Mold useful in sealing leaks in pipes

1980-10-14

1982-04-27

Arola, Dave W.

Pipe joints or couplings

Repair

264 32, 285293, 285294, 425 13, 249 89, F16L 5518

Patent

active

043267351

ABSTRACT:
The present invention is directed to an article and processes for repairing fluid (e.g., liquid and gas) leaks in pipes, including, for example, bell and spigot joints.
The device and process of the invention incorporates an elastomeric sleeve that extends around the pipe and longitudinally to either side of the leak. The sleeve contains a resin injection port with means to prevent escape of resin at a pressure above a predetermined pressure, and a fluid venting port with pressure-relief means to permit the escape of fluid at a predetermined pressure above the pressure in the pipe to be repaired.

REFERENCES:
patent: 2766614 (1956-10-01), Cook
patent: 3141478 (1964-07-01), Copeland
patent: 3178793 (1965-04-01), Rosengarten et al.
patent: 3368005 (1968-02-01), Bulzula et al.
patent: 3770301 (1973-11-01), Adams
patent: 4053176 (1977-10-01), Hilbush

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