Switch actuating mechanism
US5280145A · kind A · utility
35Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1992 |
| Grant date | Jan 18, 1994 |
| Priority date | — |
| Expiry date | Dec 30, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S200/47
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A unitized, switch activating mechanism for use in keyboard assemblies for activating snap dome or similar type switches. The mechanism includes a relatively hard actuating tip portion disposed intermediate an elastomeric conical skirt portion and a light guide portion. The conical skirt functions both as a light reflector and as a return spring. The light guide portion is constructed from a diffused translucent, relatively hard elastomeric material which functions as a highly efficient light guide for uniformly illuminating the key legend of the key board assembly with which the light guide interfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.