Thermistors, their method of production
US4480376A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1982 |
| Grant date | Nov 6, 1984 |
| Priority date | — |
| Expiry date | Apr 13, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49099
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods for producing thermistors having predetermined resistance values at predetermined temperatures are disclosed. The methods include providing a sheet of electrically non-conductive material, applying a layer of electrically conductive material to the sheet in a repeating, spaced pattern so as to produce a number of electrically conductive material portions and at least one space between them, applying a layer of thermistor material to that space in order to bridge the pairs of electrically conductive material portions and produce at least one thermistor strip having a substantially constant resistance value along its length, measuring the resistance of the thermistor strip between the pairs of electrically conductive material portions, determining from the measured resistance value the length of the thermistor strip required to produce a thermistor having the predetermined resistance value at the predetermined temperature, and producing a plurality of thermistors from the thermistor strip by transversely dividing the strip in accordance with the required lengths. In addition, thermistors produced by this method are also disclosed, as are thermometers which include these therm…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.