Measuring and testing – Fluid pressure gauge – Diaphragm
Reexamination Certificate
2007-02-22
2008-10-14
Allen, Andre J. (Department: 2855)
Measuring and testing
Fluid pressure gauge
Diaphragm
C073S706000, C073S715000, C073S753000, C361S283400
Reexamination Certificate
active
07434472
ABSTRACT:
The present invention pertains to differential pressure transducers. In an embodiment of the invention, a differential pressure transducer includes a transducer housing, a diaphragm, a bellows, and a sensing assembly. The transducer housing, diaphragm, and bellows are coupled to form a pressure chamber. The pressure chamber is separated into two portions by the diaphragm, with each portion arranged to be filled with a process fluid. A pressure differential across the diaphragm causes displacement of the diaphragm. Such displacement is measured by the sensing assembly and used to calculate the pressure differential between the two process fluids.
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Berthold John W.
Jeffers Larry A.
Leitko Travis W.
Lopushansky Richard L.
Allen Andre J.
Earp III Robert H.
Jenkins Jermaine
McDonald Hopkins LLC
Pribisich Risto
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