Method of fabricating pipe for absorbing fuel evaporation...

Details Method of fabricating pipe for absorbing fuel evaporation... Method of fabricating pipe for absorbing fuel evaporation...

2005-12-12

2008-08-05

Lawrence, Frank M (Department: 1797)

Gas separation: apparatus

Solid sorbent apparatus

Layered or laminated

C123S518000, C427S181000, C427S239000, C427S444000

Reexamination Certificate

active

07407534

ABSTRACT:
A pipe for adsorbing fuel evaporation gas in automobiles. An aluminum pipe portion is etched with acid or base so as to increase its surface area and improve its coating properties. The pipe is subjected to a thermal treatment to further improve its coating properties due to creation of an oxidation layer through such etching process, and then is coated at the surface thereof with zeolite slurry with improved adhesion, thereby effectively adsorbing the evaporation gas in terms of performance, endurance and layout.

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patent: 06-248934 (1994-09-01), None
patent: 2002-008940 (2002-01-01), None

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