Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Reexamination Certificate
2005-11-01
2005-11-01
Williams, Hezron (Department: 2856)
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
C073S061490, C073S861180, C073S861250
Reexamination Certificate
active
06959601
ABSTRACT:
An apparatus for noninvasively monitoring the flow and/or the composition of a flowing liquid using ultrasound is described. The position of the resonance peaks for a fluid excited by a swept-frequency ultrasonic signal have been found to change frequency both in response to a change in composition and in response to a change in the flow velocity thereof. Additionally, the distance between successive resonance peaks does not change as a function of flow, but rather in response to a change in composition. Thus, a measurement of both parameters (resonance position and resonance spacing), once calibrated, permits the simultaneous determination of flow rate and composition using the apparatus and method of the present invention.
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Freund Samuel M.
The Regents of the University of California
Williams Hezron
Wilson Katina
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