Method for relining an underground gas line or the like without

Details Method for relining an underground gas line or the like without Method for relining an underground gas line or the like without

1981-01-22

1983-07-19

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

29234, 29235, 2940209, 138 97, 156 83, 156 84, 156250, 156252, 156287, 156294, 264 36, 264230, B32B 3500

Patent

active

043942024

ABSTRACT:
A method and apparatus for repairing or relining an underground pipeline without having to excavate the pipe is enabled by attaching an expandable sealing unit to the end of a predetermined length of flexible tubing and feeding it through the pipeline. The flexible tubing is fed through the existing pipeline from a point beyond where the existing pipeline exits the earth, usually within the basement of a building. Once positioned in the desired location, the expandable sealing unit is expanded to form a tight seal at the desired location within the pipe by means of heating the expandable sealing unit by a heating unit connected to the source of energy through electrical conductors which pass through the flexible tubing.

REFERENCES:
patent: 2731041 (1956-01-01), Mueller et al.
patent: 2756779 (1956-07-01), Tratzik et al.
patent: 2784627 (1957-03-01), Mueller et al.
patent: 2829675 (1958-04-01), Mueller et al.
patent: 2926701 (1960-03-01), Campbell
patent: 3211573 (1965-10-01), Hight et al.
patent: 3243211 (1966-03-01), Wetmore
patent: 3382121 (1968-05-01), Sherlock
patent: 3642032 (1972-02-01), Cook et al.
patent: 3700265 (1972-10-01), Dufour et al.
patent: 3710812 (1973-01-01), Wise
patent: 3781966 (1974-01-01), Lieberman
patent: 4135958 (1979-01-01), Wood
patent: 4155373 (1979-05-01), DiGiovanni
patent: 4166479 (1979-09-01), Cleavenger
patent: 4233101 (1980-11-01), Scragg et al.
patent: 4295494 (1981-10-01), McGowan et al.

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