Temperature sensing device and method
US3982218A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1974 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Sep 19, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S205/917
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A temperature sensing device and a method of forming it is disclosed. A first film or coating of an adherent electro-conductive metallic oxide is applied over the exterior surface of a dielectric substrate. The metal oxide coating is thereafter thoroughly cleansed and a second coating or layer of a metal having a relatively high temperature coefficient of resistance is applied over the metallic oxide film so as to form a strong physical bond as well as a chemical bond therebetween. The composite so formed is fired at a temperature up to about 750.degree.C. If desired, the metal layer is thereafter suitably spiralled to provide the desired resistance and terminal leads are attached to the element. Also, if desired, the element is then coated with a dielectric protective coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.