Brushing – scrubbing – and general cleaning – Implements – Pipe – tube – or conduit cleaner
Reexamination Certificate
2005-05-03
2005-05-03
Spisich, Mark (Department: 1744)
Brushing, scrubbing, and general cleaning
Implements
Pipe, tube, or conduit cleaner
C134S16700R
Reexamination Certificate
active
06886206
ABSTRACT:
A method for inhibiting corrosion (18) in the arch of a pipe (10) carrying a multiphase corrosive liquid containing a liquid phase (12) which flows off at the lower part of the pipe (10) and a gaseous phase (14) which flows off at the upper part of the pipe. The method includes the following: a scraper (16) is introduced into the pipe, a joint (27) is provided between the scraper (16) and the inner wall of the pipe in such a way that the scraper is moved along the pipe from top to bottom as a result of the effect of the pressure difference between the top and bottom, a liquid that inhibits corrosion is introduced into the scraper or the liquid is injected into the pipe where it is mixed with the liquid phase (12), the scraper is provided with an uptake and projection device (22) that enable the corrosion-inhibiting liquid contained in the scraper or the mixture contained in the pipe to be taken up, whereby the liquid is projected onto the inner wall of the arch of the pipe as the scraper advances in the pipe.
REFERENCES:
patent: 1835119 (1931-12-01), Oberhuber
patent: 2567475 (1951-09-01), Hall
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patent: 6263534 (2001-07-01), McCann et al.
patent: 0 618 396 (1994-10-01), None
patent: 2 571 821 (1986-04-01), None
patent: 2 218 773 (1989-11-01), None
Spisich Mark
Sughrue & Mion, PLLC
Total
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