Liquid consumption status detecting method, liquid...

Details Liquid consumption status detecting method, liquid... Liquid consumption status detecting method, liquid...

2007-07-16

2008-10-14

Williams, Hezron E. (Department: 2856)

Measuring and testing

Liquid level or depth gauge

C073S052000, C073S149000, C347S007000

Reexamination Certificate

active

07434462

ABSTRACT:
A method of detecting a consumption status of liquid contained in a liquid container, comprising steps of: preparing a detection device having a piezoelectric element and attaching the detection device on a desired position of the liquid container so that at least a part of the detection device contacting the liquid; measuring a residual vibration of the detection device; and detecting the consumption status of the liquid contained in the liquid container on the basis of a result of the measurement of the residual vibration.

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