Apparatus for treating pipes

Details Apparatus for treating pipes Apparatus for treating pipes

1977-02-28

1978-11-14

McIntosh, John P.

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

118105, 118DIG10, 138 97, B05C 708

Patent

active

041250893

ABSTRACT:
Highly viscous treatment compound is applied to the interior of a pipe at selected locations by a tool passing through the pipe. The tool has axially spaced wall-contacting gaskets defining a pressure chamber therebetween into which the compound is forced. At least one of the gaskets is held in contact with the pipe wall by a support ring to counter the pressure of the compound in the chamber. The ring is withdrawn to permit movement of the tool. Specific apparatus for carrying the compound to and through the tool and for applying the pressure and operating the support means is disclosed.

REFERENCES:
patent: 1787126 (1930-12-01), Steinnes
patent: 2856004 (1958-10-01), Badger
patent: 3111431 (1963-11-01), Weaver
patent: 3135629 (1964-06-01), McLean
patent: 3188371 (1965-06-01), Weekley
patent: 3269421 (1966-08-01), Telford et al.

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