Connection structure for different kinds of metal tubes

Pipe joints or couplings – Nonmetal to metal – Internal member

Reexamination Certificate

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Details

C285S226000, C285S256000, C285S382700

Reexamination Certificate

active

07661720

ABSTRACT:
A structure connecting dissimilar metal tubes is a bellows tube and a metal tube made of stainless steel and aluminum respectively. The bellows tube has a reinforcement portion on its outer surface. The structure includes a nipple, the reinforcement portion, and a crimp collar fitted in that order to the outside of a straight tube portion of the bellows tube. The nipple is joined to the reinforcement portion and the metal tube. A sleeve is joined to the metal tube and the crimp collar. The nipple is bonded to the inner surface of the metal tube with a resin. End faces of the reinforcement portion and the crimp collar are in contact with or located close to an end face of the metal tube.

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U.S. Appl. No. 11/551,044, filed Oct. 19, 2006, Katayama, et al.

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