Multiple-function selector utilizing a force sensitive, variable impedance device
US6067863A · kind A · utility
6Cited by
19References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1997 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Aug 29, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2201/036
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical switch assembly includes a member by which a user selects one of a plurality of functions. Operation of the member applies different amounts of pressure to a transducer that has an impedance which changes in response to the applied pressure. An input circuit produces an output voltage which varies in relation to changes in the impedance of the pressure transducer. A voltage comparator compares the output voltage to a plurality of voltage ranges and in response to the voltage comparison, an output driver produces at least one electrical signal that indicates which one of plurality of functions the user has selected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.