Thermal measuring and testing – Distance or angle – Thickness – erosion – or deposition
Reexamination Certificate
2005-02-11
2008-12-30
Lefkowitz, Edward (Department: 2855)
Thermal measuring and testing
Distance or angle
Thickness, erosion, or deposition
C374S119000, C374S141000, C374S045000
Reexamination Certificate
active
07470056
ABSTRACT:
Apparatus, methods, and articles of manufacture for monitoring a condition of a cavity surface of an elongated member having a cavity therein. In particular, the example apparatus, methods, and articles of manufacture emit a first ultrasonic signal that propagates from a first surface of an elongated member having a cavity therein toward a second surface of the cavity having a first temperature value. First and second echoes associated with the first ultrasonic signal are then obtained. At least one of the first and second echoes is associated with a recess in the second surface. A condition of the second surface is monitored by determining a second temperature value of the second surface based on the first and second echoes and the first temperature value.
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Hanley Flight & Zimmerman LLC
Industrial Measurement Systems, Inc.
Jagan Mirellys
Lefkowitz Edward
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