Method for cleaning and coating pipeline walls

Details Method for cleaning and coating pipeline walls Method for cleaning and coating pipeline walls

1982-04-12

1984-01-10

Hoffman, James R.

Coating processes

Interior of hollow article coating

Vacuum or pressure utilized

427230, 427235, 427239, B05D 722, B05D 126, B05D 140, B05D 136

Patent

active

044253850

ABSTRACT:
A method for distributing fluid along the interior wall of a pipeline wherein a quantity of fluid is placed at a location in the pipeline and exposed at one side to a force acting in an axial and rotational direction. This force will cause at least a portion of the fluid to enter a helical path adjacent the pipeline which will force the material to be coated on the inner wall of the pipeline. As the fluid is coated on the pipeline wall it is exposed to an axial wiping force which smooths out the fluid coated onto the inner wall of the pipeline by removing the excess material.

REFERENCES:
patent: 3112227 (1963-11-01), Curtis
patent: 4069535 (1978-01-01), Cato
patent: 4081875 (1978-04-01), Nishino
patent: 4122575 (1978-10-01), Sagawa
patent: 4174750 (1979-11-01), Nichols

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