Modified dual diaphragm pressure sensor

Measuring and testing – Fluid pressure gauge – Diaphragm

Reexamination Certificate

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Details

C073S724000

Reexamination Certificate

active

07100453

ABSTRACT:
A device for sensing pressure using two flexible diaphragms in which an additional element is added to promote rolling contact of the diaphragm. One embodiment aligns the flexible diaphragms in a non-parallel alignment such that deflection of one flexible diaphragm will roll with respect to the other to provide increased linear capacitive response. In another embodiment a non-conductive spacing element is positioned between the diaphragms to permit rolling contact upon displacement of a diaphragms. These devices are capacitive pressure gauges. One additional embodiment includes a cantilever hinge and rigid polymer disc to convert one diaphragm into a linearly deflecting diaphragm.

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patent: 2003/0031572 (2003-02-01), Tearle
patent: WO 00/28215 (2000-05-01), None

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