Temperature sensitive transducer with a resonant bimetal disk
US4541731A · kind A · utility
6Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1983 |
| Grant date | Sep 17, 1985 |
| Priority date | — |
| Expiry date | Apr 21, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K5/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature sensing transducer has a mechanically vibrating member whose rigidity varies with temperature, changing the resonant frequency. An output signal is generated having a frequency controlled by the vibrating member. The rigidity is caused to vary with temperature by making the vibrating member from a material whose modulus of elasticity is sensitive to temperature changes in the desired measurement range. Also by making the vibrating member of a bimetal shaped as a frusto-conical disk, the rigidity of the disk changes with temperature due to internal strains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.