Measuring and testing – Fluid pressure gauge – Photoelectric
Reexamination Certificate
2011-06-28
2011-06-28
Caputo, Lisa M (Department: 2855)
Measuring and testing
Fluid pressure gauge
Photoelectric
C073S715000
Reexamination Certificate
active
07966887
ABSTRACT:
A high-temperature pressure sensor is provided. The sensor includes a quartz substrate with a cavity etched on one side. A reflective coating is deposited on at least a portion of the cavity. The sensor further includes a ferrule section coupled to the quartz substrate with the cavity therebetween. The cavity exists in a vacuum, and cavity gap is formed between the reflective metal coating and a surface of the ferrule. The sensor also includes an optical fiber enclosed by the ferrule section and extending from the cavity gap to an opposing end of the ferrule section and a metal casing surrounding the ferrule section and the quartz substrate with an opening for said optical fiber extending therefrom. The pressure applied to the quartz substrate changes the dimensions of the cavity gap and a reflected signal from the reflective coating is processed as a pressure.
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Kennerly Stacey Joy
Knobloch Aaron Jay
Li Weizhuo
Shaddock David Mulford
Vernooy David William
Asmus Scott J.
Caputo Lisa M
General Electric Company
Jenkins Jermaine
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