Pneumatic switch potentiometer
US4525698A · kind A · utility
2Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1984 |
| Grant date | Jun 25, 1985 |
| Priority date | — |
| Expiry date | Feb 2, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C10/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pneumatically actuated pressure transducer has a wiper assembly which is movable from an off position through a range of positions wherein the transducer has a varying voltage output. The pressure transducer comprises a high thermal conductivity substrate which forms a base for a potentiometer element and a resistance path coated onto the substrate. The resistance path includes a first area of low resistance material and a second area of high resistance material which meet in a chevron shaped transition zone. An insulating material coated onto the substrate defines the off position for the transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.