Pipeline treatment apparatus

Details Pipeline treatment apparatus Pipeline treatment apparatus

1978-10-10

1981-02-10

McIntosh, John P.

Coating apparatus

Solid member or material acting on coating after application

Inside of hollow work

118254, 118DIG10, 118112, 1510406R, B05C 708

Patent

active

042494753

ABSTRACT:
Apparatus for treating the internal wall of a pipeline by scraping, cleaning, painting or the like, including an elongated pig, a mounting assembly connected to the trailing end of the pig, rollers movably supported on the mounting assembly for rotational movement around the longitudinal axis of the pig, for radial movement relative to the longitudinal axis of the pig, and for canting movement in which the rotational axis of each roller can be selectively skewed with respect to a chord of the diametric cross-section of a pipeline in which the apparatus is located, with the longitudinal axis of the pig coinciding with the longitudinal axis of the pipeline. Resilient biasing means is provided for constantly urging the rollers radially outwardly with respect to the longitudinal axis of the pig. A plurality of spaced surface treating elements are rotatably carried on the mounting assembly for rotation about the longitudinal axis of the pig.

REFERENCES:
patent: 1193005 (1916-08-01), Frank
patent: 2017042 (1935-10-01), Dougherty
patent: 2133035 (1938-10-01), Morden
patent: 2792807 (1957-05-01), Cummengs
patent: 3135629 (1964-06-01), McLean
patent: 3885521 (1975-05-01), Von Arx

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