Capacitive pressure transducer
US4177496A · kind A · utility
112Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1977 |
| Grant date | Dec 4, 1979 |
| Priority date | — |
| Expiry date | Sep 19, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/43
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A capacitive pressure transducer comprising a pair of thin discs made from an insulator, a thin metal film metalized onto each of the discs and forming the plates of the capacitor, and means for bonding the two discs together such that the two metal films are opposite each other, the two metal films are separated by an open gap, and the two metal films are insulated one from the other. When pressure is applied to the discs, the discs are displaced thereby changing the capacitance of the pressure transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.