Measuring and testing – Fluid pressure gauge – Diaphragm
Reexamination Certificate
2006-07-11
2006-07-11
McCall, Eric S. (Department: 2855)
Measuring and testing
Fluid pressure gauge
Diaphragm
Reexamination Certificate
active
07073388
ABSTRACT:
A variable capacitance measuring device can comprise a glass-ceramic insulator having a coefficient of thermal expansion that closely matches the coefficient of thermal expansion of a metallic materials used within the device. The glass-ceramic material may chemically bond to the surfaces of the metallic materials to provide a hermetic seal and eliminate the need for a separate glass seal or grooves within the electrode assembly. Additionally, a single-piece electrode assembly can be used instead of a separate electrode assembly (for the electrical feedthrough) and electrode. A shim may be used during the formation of the insulating material to reduce the likelihood of the insulator adhering to surfaces of the electrode portion during the manufacturing process. Also, separate bake-out and getter activation cycles may be combined into a single heat cycle.
REFERENCES:
patent: 4135936 (1979-01-01), Ballard, Jr.
patent: 4414282 (1983-11-01), McCollister
patent: 4536203 (1985-08-01), Kramer
patent: 4823603 (1989-04-01), Ferran
patent: 5396803 (1995-03-01), Ferran
patent: 5820989 (1998-10-01), Reed
patent: 5939639 (1999-08-01), Lethbridge
patent: 6105436 (2000-08-01), Lischer
patent: 6205861 (2001-03-01), Lee
patent: 6568274 (2003-05-01), Lucas
patent: 6837111 (2005-01-01), Mei
How to Select and Use Capacitance Diaphragm Gauges,Millipore , A Vacuum Application Guide, Millipore Corporation, 16 pages, 2000.
Glass-Mica Composites, Mykroy/Mycalex Ceramics,Spaulding Composites Co. http://www.mykrov-mycalex.com/prop5.htm—4 pages.
Anthony Rollett,Heat Treatemnt of Glass Ceramics,Carnetie Mellon University, 4 pgs.
“Glass-Ceramics: Everything you need to know”,3 pgs.
Stroud, J.S,Property Sheet, Schott Glass Technologies Inc., Duryea, PA, 8 pgs., 1997.
Henderson, et al.,Determination of the Optimum Crystallization Conditions of a High Thermal Expansion Glass-Ceramic,Monsanto Research Corporation for the U.S. Dept. of Energy, 9 pgs., 1984.
Introduction to Mica,Inderchand Rajarhia & Sons (P) Ltd., http://www.icrmica.com/icrmica—mica—introduction.htm , 2 pgs.
Schott Glas,Types of Technical Glasses,pp. 2-39, Mainz, 2000.
Schott Glas,Electronic Packaging Glass-to-Metal Seals,24 pgs.
Celerity, Inc.
Lowrie Lando & Anastasi, LLP
McCall Eric S.
LandOfFree
Variable capacitance measuring device comprising a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Variable capacitance measuring device comprising a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable capacitance measuring device comprising a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3540037