Electricity: electrical systems and devices – Electrostatic capacitors – Variable
Patent
1991-08-14
1992-10-13
Griffin, Donald
Electricity: electrical systems and devices
Electrostatic capacitors
Variable
73718, G01L 912, H01G 700
Patent
active
051556537
ABSTRACT:
A capacitive pressure sensor including a housing defining a chamber; a seal structure within the housing dividing the chamber into a central pressure chamber and a measurement chamber; a diaphragm positioned within the chamber with a central portion of the diaphragm positioned in the pressure chamber and an annular peripheral portion of the diaphragm positioned in the measurement chamber; and a measurement circuit including an annular electrode carried by the lower face of the annular portion of the diaphragm coacting with a further electrode carried by a confronting portion of the housing and operative to generate an output signal which varies in proportion to the deflection of the diaphragm in response to exposure of the opposite faces of the diaphragm to differential pressures.
REFERENCES:
patent: 2714703 (1955-08-01), Ruderfer
patent: 3405559 (1968-10-01), Moffatt
patent: 3479879 (1969-11-01), Music
patent: 3595084 (1971-07-01), Bailey
patent: 3634727 (1972-01-01), Polye
patent: 3715638 (1973-02-01), Polye
patent: 3748571 (1973-07-01), Kurtz
patent: 3750476 (1973-08-01), Brown
patent: 3808480 (1974-04-01), Johnston
patent: 3858097 (1974-12-01), Polye
patent: 3993939 (1976-11-01), Slavin
patent: 4064550 (1977-12-01), Dias
patent: 4089036 (1978-05-01), Geronime
patent: 4125027 (1978-11-01), Clark
patent: 4151578 (1979-04-01), Bell
patent: 4158217 (1979-06-01), Bell
patent: 4177496 (1979-12-01), Bell
patent: 4207604 (1980-06-01), Bell
patent: 4295376 (1981-10-01), Bell
patent: 4388668 (1983-06-01), Bell
patent: 4426673 (1984-01-01), Bell
patent: 4562742 (1986-01-01), Belel
"Measuring Systems Application and Design", Ernest Doebelim, 3rd Edition, McGraw Hill, pp. 422-436.
Griffin Donald
MacLean-Fogg Company
LandOfFree
Capacitive pressure sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Capacitive pressure sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Capacitive pressure sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1305887