Pressure variable capacitor
US3993939A · kind A · utility
92Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1975 |
| Grant date | Nov 23, 1976 |
| Priority date | — |
| Expiry date | Jan 7, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G5/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pressure responsive diaphragm is attached to a substrate carrying a thick film metallic coating covered by a dielectric glass coating so that the diaphragm and thick film coating comprise a pressure variable capacitor. Changes in pressure difference across the diaphragm force the diaphragm to roll against the glass to vary the area of diaphragm in contact with the glass, thus changing the capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.