G - Physics – 01 – L
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G - Physics
01
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349/40
G01L 11/00 (2006.01) G01L 11/04 (2006.01) G01M 3/24 (2006.01) G08B 21/00 (2006.01)
Patent
CA 1225142
-15- SONIC APPARATUS AND METHOD FOR DETECTING THE PRESENCE OF A GASEOUS SUBSTANCE IN A CLOSED SPACE ABSTRACT OF THE DISCLOSURE A method and apparatus for detecting the presence of a gaseous substance within a space bounded by an enclosure utilizes the fact that sound is not transmitted through a vacuum and is transmitted through the material of the enclosure. A sonic wave transmitter and a sonic wave receiver are engaged with the material of the enclosure and separated by the space. Using the calculated arrival times and/or amplitudes for the soundwave portions through the space and through the material of the enclosure, it can be determined whether a soundwave portion has passed through the space and thus a leakage of gaseous substance into the space above a threshold amount has taken place.
470309
Bower John R.
Hammond Charles W.
Babcock & Wilcox Company The
Ridout & Maybee Llp
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