Ultrasonic densitometer with pre-inflated fluid coupling membranes
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United States of America Patent
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Aug 21, 2001
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app pub date -
Mar 26, 1999
filing date -
May 11, 1988
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Abstract
A contained water ultrasonic densitometer employs pre-inflated bladders holding coupling fluid about ultrasonic transducers. The bladders in a relaxed state define a cavity smaller than the human heel so that when the heel is inserted, the bladders conform to the heel in a wiping action removing entrapped air.
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