Methods and apparatus for relining service pipe

Details Methods and apparatus for relining service pipe Methods and apparatus for relining service pipe

1980-05-13

1982-03-30

Crosby, Gene P.

Metal working

Method of mechanical manufacture

Repairing

29421R, 29523, 138 97, B21D 3904

Patent

active

043217400

ABSTRACT:
A method and apparatus are provided for relining a fluid transmission pipe in which a deformable stiffener is inserted in one end of a plastic liner, the plastic liner is inserted into the transmission line with the stiffener first, a plastic sealant is placed around the end of the plastic liner in the transmission pipe and the stiffener is expanded intermediate its ends in the plastic liner to force the liner end into tight contact with the transmission pipe interior with sealant surrounding the contact area.

REFERENCES:
patent: 3297029 (1967-01-01), Brinkman
patent: 3306635 (1967-02-01), Ferguson
patent: 3307996 (1967-03-01), Keneipp
patent: 3462821 (1969-08-01), Cours
patent: 3568721 (1971-03-01), Ross
patent: 3885298 (1975-05-01), Pogonowski
patent: 3897619 (1975-08-01), Thivans
patent: 4069573 (1978-01-01), Rogers
patent: 4075755 (1978-02-01), Bernatt

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