Measuring and testing – Fluid pressure gauge – Diaphragm
Reexamination Certificate
2007-05-16
2011-12-20
Caputo, Lisa (Department: 2855)
Measuring and testing
Fluid pressure gauge
Diaphragm
C073S716000, C073S717000, C073S723000, C073S724000, C361S283100, C361S283400
Reexamination Certificate
active
08079269
ABSTRACT:
A pressure sensor comprises a first pressure chamber containing fill fluid at a first pressure, a second pressure chamber containing fill fluid at a second pressure, a porous dielectric diaphragm having first and second major surfaces exposed to the first and second pressure chambers, and first and second electrodes positioned with respect to the first and second major surfaces. A method for sensing pressure is also disclosed, comprising applying first and second pressures to fill fluid in first and second pressure chambers of a pressure sensor having a porous dielectric diaphragm, and producing an output representative of a pressure differential between the pressures, as a function of surface charges on first and second major surfaces of the porous dielectric diaphragm.
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Caputo Lisa
Jenkins Jermaine
Kinney & Lange , P.A.
Rosemount Inc.
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