Cylinder key switch
US4931600A · kind A · utility
2Cited by
4References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1988 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | Jul 6, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cylinder-operable key switch 5 comprises a cylinder housing 1 and a cylinder core 7 mounted rotatably therein, which acts upon an electrical switching device 3. The switching device 3 is located at one side of and adjacent to the cylinder core 7 which operates the switching device 3 by rotation of a control member 18. The key switch is particularly suitable for fitting to electronic equipment, where it provides a high insulation against flash-over voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.