Measuring and testing – Testing sealed receptacle
Reexamination Certificate
2007-10-16
2007-10-16
Williams, Hezron (Department: 2856)
Measuring and testing
Testing sealed receptacle
C073S866000
Reexamination Certificate
active
11222507
ABSTRACT:
A high-temperature seal having in-situ integrity monitoring capability includes a quantity of dielectric material sealing an interface between adjacent structures and an electrical transmission line embedded within the dielectric material. A signal injection port is provided for exciting the transmission line with an excitation signal. One or more sample ports are provided for sampling the transmission line to obtain signal samples resulting from the excitation signal. The sample port(s) are adapted for connection to a signal analyzer adapted to analyze the signal samples for indications of seal integrity problems. Using a technique such as time domain reflectometry or frequency response analysis, the transmission line can be monitored for changes in characteristic impedance due to changes in seal dielectric constant and/or disruption of the transmission line. Such evaluation provides useful information for making determinations about seal integrity in a manner that permits safe seal operation and minimization of resultant stress modes.
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Bourdelaise Robert A.
Curry Timothy J.
Grabow Barry E.
Olenick John A.
Richards Eli A.
Duft Walter W.
Frank Rodney
Williams Hezron
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