Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate
2007-07-17
2007-07-17
Williams, Hezron (Department: 2856)
Measuring and testing
Vibration
By mechanical waves
C073S04050A, C073S053050, C073S054110
Reexamination Certificate
active
11132870
ABSTRACT:
A lubricity sensor includes a flexural plate wave device and a face shear mode bulk acoustic wave device, which is associated with and located proximate to the flexural plate wave device. The face shear mode bulk acoustic wave device and the flexural plate wave device form a lubricity sensor wherein acoustic wave data produced by the flexural plate device together with the face shear mode bulk acoustic wave device when the lubricity sensor is exposed to a liquid relates directly to a lubricity of the liquid thereby providing lubricity measurement data associated with the liquid. The acoustic wave data can comprises the oscillation gain compensation, the frequency, amplitude and/or phase velocity associated with the flexural plate device and the shear mode bulk acoustic wave device such that the oscillation gain compensation, the frequency, amplitude and/or phase velocity provide an indication of the lubricity of the liquid.
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Liu James ZT
Rahman Aziz
Rhodes Michael L.
Honeywell International , Inc.
Lopez Kermit D.
Ortiz Luis M.
Saint-Surin Jacques M.
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