Apparatus for applying a coating to the internal wall of a condu

Details Apparatus for applying a coating to the internal wall of a condu Apparatus for applying a coating to the internal wall of a condu

1974-12-23

1976-08-31

McIntosh, John P.

Coating apparatus

Immersion or work-confined pool type

Work-confined pool

118DIG10, B05C 708

Patent

active

039773604

ABSTRACT:
A uniform, continuous layer of a drag reduction material is applied to the internal wall of a conduit by injecting into the conduit the material in liquid form via an apparatus capable of applying the liquid to the internal conduit wall. The apparatus supplies the liquid to the wall at a rate proportional to the rate of travel of the apparatus through the conduit. The drag reduction material may be injected into the conduit either prior to the injection of the apparatus or may be contained in a chamber within the apparatus.

REFERENCES:
patent: 2480358 (1949-08-01), Curtis et al.
patent: 3105554 (1963-10-01), McCall
patent: 3108024 (1963-10-01), Battle
patent: 3135629 (1964-06-01), McLean
patent: 3216435 (1965-11-01), Poettmann
patent: 3495546 (1970-02-01), Brown et al.
patent: 3703947 (1972-11-01), Landrum

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