Variable capacitance measuring device

Details Variable capacitance measuring device Variable capacitance measuring device

2008-07-08

2008-07-08

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Fluid pressure gauge

Diaphragm

C073S718000, C361S283100

Reexamination Certificate

active

11392253

ABSTRACT:
A variable capacitance measuring device can comprise any one or more features in various different embodiments allow a reliable, compact device to be achieved. A capacitor electrode, a gettering housing, and pinch-off connector may be aligned along a common axis may reduce width dimensions without a substantial increase in length. Temperature-induced variations may be reduced by selecting materials that have coefficients of thermal expansion relatively closer to one another. Substantially varying topologies for ceramic-metal interfaces may reduce the likelihood of external contaminants from reaching the evacuated portion of the device. A tube can be used between the capacitor portion and a gettering housing to isolate external forces and getter activation heat from the sensor. The same tube also reduces heat loss from a heated sensor and protects the electronics from overheating. Embodiments also include processes for using and forming the devices.

REFERENCES:
patent: 4135936 (1979-01-01), Ballard, Jr.
patent: 4362580 (1982-12-01), Kane et al.
patent: 4414282 (1983-11-01), McCollister
patent: 4536203 (1985-08-01), Kramer
patent: 4823603 (1989-04-01), Ferran
patent: 4970577 (1990-11-01), Ogihara et al.
patent: 5019783 (1991-05-01), Cadwell
patent: 5178015 (1993-01-01), Loeppert et al.
patent: 5396803 (1995-03-01), Ferran
patent: 5542300 (1996-08-01), Lee
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
patent: 6941812 (2005-09-01), Sekimori et al.
patent: 7000482 (2006-02-01), Mei
patent: 7043994 (2006-05-01), Mei
patent: 7073388 (2006-07-01), Mei

Affiliated with

Also associated with

Rating

Variable capacitance measuring device 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, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable capacitance measuring device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3911836