Potentiometer
US6369690B1 · kind B1 · utility
6Cited by
9References
4Claims
0Family size
Inventor
Key dates
| Filing date | Mar 6, 2000 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Mar 6, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C10/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A resistor card for a potentiometer to measure the fuel in a fuel tank consists of a non-conductive substrate with a plurality of elongate conductive contacts deposited thereon. The contacts have an elevation above the surface of the substrate and the contacts are oriented in parallel relationship to each other to form a wiper track across which a wiper is moveable. To reduce the rate at which the upper surfaces of the contacts are worn away by movement of the wiper, an insulating or highly resistive filler material is deposited between the conductive materials which form the lands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.