Pressure sensor system
US4875368A · kind A · utility
26Cited by
17References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Dec 22, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/017
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A measurement transducer with a functionally integral quartz material construction to provide spacing measurement gaps transverse to one another with metalized film surfaces defining capacitance plates and electrically conductive paths. The transducer is mounted under compression independent of a protective case and compensates for temperature changes to provide accurate measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.