Coating apparatus – Immersion or work-confined pool type – Work-confined pool
Reexamination Certificate
2002-08-06
2010-11-23
Fletcher, III, William Phillip (Department: 1715)
Coating apparatus
Immersion or work-confined pool type
Work-confined pool
C118SDIG010, C427S142000, C427S231000, C138S097000
Reexamination Certificate
active
07836844
ABSTRACT:
The inventive method for protecting from corrosion and scale deposit and restoring tubes of heat-exchanging equipment consists in applying a polymeric coating on the internal surface of tubes by gradually and rotationally moving an excessive volume of polymeric material therealong and in hardening said material. A polymeric compound having an at-rest viscosity ranging from 1000 to 1200 poises and a thixotropic viscosity reduction during the displacement thereof is used as a polymeric material. The inventive device for carrying out said method comprises a loading chamber (2), a connecting washer (12), a unit for progressively displacing the polymeric material provided with spaced rigid washers (4,5,6) fixed to a metallic rod (7), an elastic screw (8) having a conical shape whereby the conicity thereof ranges from 5 to 10° on the side which is opposite in relation to the connecting washer. Said elastic screw is arranged in such a way that it is enable to perform the gradual rotation, the rotation displacement being performed at a linear speed of 0.4-1.0 m/sec and the gradual displacement being performed at a speed of 1-0.49 m/sec.
REFERENCES:
patent: 3112227 (1963-11-01), Curtis
patent: 3885521 (1975-05-01), von Arx
patent: 4069535 (1978-01-01), Cato
patent: 4425385 (1984-01-01), Coulter et al.
patent: 4774905 (1988-10-01), Nobis
patent: 1061198 (1979-08-01), None
Derwent Abstract 1979-25501B for SU 606641 A, published Apr. 26, 1978.
Golovin Vladinir Anatolievich
Ilin Alexander Borisovich
Kublitskiy Kirill Valentinovich
Kuznets Vitaly Timofeevich
Fletcher, III William Phillip
Hanrath James P.
Obschestvo S Ogranichennoi “Nauchno-Proizvodstvennoe Obie
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