Method of sealing a discontinuity within a gas main

Details Method of sealing a discontinuity within a gas main Method of sealing a discontinuity within a gas main

1989-09-29

1992-10-20

Bell, Janyce

Coating processes

Restoring or repairing

427142, 427226, 427239, B32B 3500, B05D 722

Patent

active

051568861

ABSTRACT:
A method of sealing a joint in a gas main comprising boring a hole in the wall of the main at a point spaced from the joint, inserting into the main through the hole so formed a sealant spraying means, moving the spraying means to the site of the joint, pumping a settable anaerobic type sealant to the spraying means, causing the spraying means to spray the sealant onto the inner wall of the main to form a layer covering the joint, removing the spraying means through the hole and allowing the sealant to set.

REFERENCES:
patent: 4022935 (1972-05-01), Kinney et al.
patent: 4419163 (1983-12-01), Yamamoto et al.
patent: 4556580 (1985-12-01), Kamuro et al.
patent: 4678449 (1987-06-01), Webb et al.
patent: 4731982 (1988-03-01), Grant et al.
patent: 4758295 (1988-07-01), Savaikla et al.
patent: 4768561 (1988-09-01), Hyodo et al.

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