Key switch operable by a cylinder lock
US4980524A · kind A · utility
3Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1988 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Apr 14, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/008
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A key switch operable by a cylinder lock, which switch comprises a cylinder housing and a cylinder core arranged to be rotatable within the housing, which is coupled with a non-conducting switch rotor and a switch casing base, in which the switching arrangement is located and the switch rotor is guided. The cylinder housing is made of insulating material and forms the top of the switch casing and, on its end face facing the switch rotor, has at least one annular rib which is concentric with the axis of the switch rotor, and which engages in an annular groove of the switch rotor, which groove has a corresponding contour.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.