Electricity: electrical systems and devices – Electrostatic capacitors – Variable
Patent
1993-12-02
1994-12-20
Reynolds, Bruce A.
Electricity: electrical systems and devices
Electrostatic capacitors
Variable
73517R, H01G 700
Patent
active
053750349
ABSTRACT:
A silicon capacitive pressure sensor is disclosed having a silicon diaphragm and a silicon substrate arranged in parallel and separated by a glass dielectric spacer. The glass is deposited onto a surface of the substrate using an ion milling machine. The sensor further includes a transition piece attached to a second layer of glass insulator disposed between the silicon diaphragm and the transition piece. The transition piece has a throughbore formed therein for applying a fluid to a surface of the silicon diaphragm, the fluid having a pressure desired to be measured by the sensor. The glass disposed between the diaphragm and the transition piece is deposited onto the transition piece using the ion milling process.
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Foyt Arthur G.
Provenzano Paul L.
Swindal James L.
Wagner Robert A.
Kosakowski Richard H.
Reynolds Bruce A.
Switzer Michael D.
United Technologies Corporation
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