发明名称 |
Conduit purging device and method |
摘要 |
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.
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申请公布号 |
US7992760(B2) |
申请公布日期 |
2011.08.09 |
申请号 |
US20060357458 |
申请日期 |
2006.02.08 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
发明人 |
WILKS MICHAEL T. |
分类号 |
B23K20/14;B23K9/16 |
主分类号 |
B23K20/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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