Joint for double pipe and brazing method thereof

Details Joint for double pipe and brazing method thereof Joint for double pipe and brazing method thereof

2006-04-04

2006-04-04

Dunwoody, Aaron (Department: 3679)

Pipe joints or couplings

Having plural independent paths

Parallel paths

C285S123300, C285S123150, C285S123100

Reexamination Certificate

active

07021670

ABSTRACT:
A joint for joining a double pipe, which is provided with an outer pipe for transfer of a first fluid, and an inner pipe for transfer of a second fluid. The joint is provided with a flange including a first through bore and a second through bore, a branch portion and a connection pipe having a first end and a second end, the first end being brazed with the inner pipe of the double pipe and the second connection portion being inserted into the second through bore and defining a second portion for connection of the second circuit pipe, whereby the connection pipe transfers second fluid between the second circuit pipe and the outer pipe of the double pipe. The branch portion is provided with a first connection portion for connection of the first circuit pipe, the first connection portion being inserted into the first through bore.

REFERENCES:
patent: 5397102 (1995-03-01), Kingman
patent: 6009908 (2000-01-01), Hartnagel et al.
patent: 6145545 (2000-11-01), Hartnagel et al.
patent: 6533328 (2003-03-01), Takamatsu
patent: 2001/0020786 (2001-09-01), Takamatsu et al.
patent: 2595578 (1997-01-01), None

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