Resistance element for potentiometric devices, and method of manufacture
US6815039B2 · kind B2 · utility
2Cited by
10References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 2002 |
| Grant date | Nov 9, 2004 |
| Priority date | — |
| Expiry date | Feb 21, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24413
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Conductive plastic resistance element having particles of conductive material embedded therein and projecting therefrom for reducing variations in contact resistance in a potentiometric device in which the element is employed. The element is made by processing carbon powder, resin, solvent and conductive phases to form a paste, applying the paste to a substrate, and curing the paste to drive off the solvent and form a film, with the conductive phases rising to the surface of the film and becoming embedded therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.