Conduit purging device and method

Details Conduit purging device and method Conduit purging device and method

2011-08-09

2011-08-09

Ward, Jessica L (Department: 1735)

Metal fusion bonding

Including means to apply flux or filler to work or applicator

Gaseous flux

C228S219000, C219S061000, C219S072000, C219S074000

Reexamination Certificate

active

07992760

ABSTRACT:
A device for purging gas comprises a conduit assembly defining an interior volume. The conduit assembly comprises a first conduit portion having an open first end and an open second end and a second conduit portion having an open first end and a closed second end. The open second end of the first conduit portion is disposed proximate to the open first end of the second conduit portion to define a weld region. The device further comprises a supply element supplying a gas to the interior volume at a substantially constant rate and a vent element venting the gas from the interior volume at a rate that maintains the gas in the interior volume within a pressure range suitable to hold a weld bead in the weld region in equilibrium during formation of a weld to join the first conduit portion and the second conduit portion.

REFERENCES:
patent: 4423890 (1984-01-01), Hackett et al.
patent: 5425492 (1995-06-01), Thode
patent: 5811055 (1998-09-01), Geiger
patent: 5864111 (1999-01-01), Barefoot
patent: 6653596 (2003-11-01), Blankenship
patent: 6739204 (2004-05-01), Barefoot
patent: 2002/0195429 (2002-12-01), Fusaro, Jr. et al.

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