Measuring and testing – With fluid pressure – Leakage
Reexamination Certificate
2008-01-22
2008-01-22
Williams, Hezron (Department: 2856)
Measuring and testing
With fluid pressure
Leakage
Reexamination Certificate
active
07320243
ABSTRACT:
Methods and apparatus are provided for detection of large leaks in scaled articles. Apparatus for leak detection includes a first sealable chamber configured to receive a test piece containing a trace gas, a second sealable chamber, a first valve coupled between the first and second chambers, a leak detector having a test port, a trace gas permeable member coupled between the second chamber and the test port of the leak detector, a vacuum pump having an inlet, and a second valve coupled between the second chamber and the inlet of the vacuum pump. The permeable member may be quartz, which is permeable to helium when heated. The leak detector may be an ion pump or a helium mass spectrometer leak detector.
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Palenstijn Pieter N.
Perkins Charles
Fishman Bella
McClellan William
Varian Inc.
West Paul M
Williams Hezron
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