Coating processes – Interior of hollow article coating – Vacuum or pressure utilized
Patent
1996-01-31
1998-07-21
Bell, Janyce
Coating processes
Interior of hollow article coating
Vacuum or pressure utilized
427230, 427235, 427239, 427290, 427299, 427318, 427386, 4273881, B05I 300
Patent
active
057832560
ABSTRACT:
Patent for "PROCESS AND EQUIPMENT FOR THE SIMULTANEOUS RECOVERY OF TWO PIPES OR TUBES WITH A HIGH DEGREE OF OBSTRUCTION", with the said process consisting of recovering each of the said obstructed pipes or tubes by means of a jet of compressed air flowing with a spiral motion from one of the extremities of each of the said pipes or tubes, with water first being added to the said jet in order to increase the passage of the air; with the said water then being followed by a cleaning solution, a volatile liquid, or another equivalent product, along with an abrasive material consisting of crushed rock or gravel, or a similar substance, in order to clean the said pipe or tube; after which an epoxy resin paint or another type of coating is added, which coats all of the inner wall of the pipe or tube, as a result of the pressure applied by the said jet of compressed air. The corresponding equipment consists of an air-purification device likewise with a spiral motion, from the end of the associated mechanisms spiral flow of compressed air with clean water; with a cleaning solution or volatile liquid; with an abrasive material consisting of crushed rock or gravel, or a similar substance; and an epoxy resin paint or other coating material.
REFERENCES:
patent: 4816296 (1989-03-01), Gibson
patent: 5499659 (1996-03-01), Naf
patent: 5622209 (1997-04-01), Naf
Matsuda Kikue
Matsuda Shin-ichi
Bell Janyce
Cohen Lawrence S.
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