Illuminated switch and keypad assembly having a light gradient and a light conductive elastomeric assembly
US5384459A · kind A · utility
31Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1993 |
| Grant date | Jan 24, 1995 |
| Priority date | — |
| Expiry date | Jun 1, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch assembly (100) includes a key area (104) and a light reception section (114) for receiving light from input lightpipe (106) and providing some of the light to key area (104). Switch assembly (100) further includes an output lightpipe (122) and an optical conversion section (116) for modifying the light which is received by output lightpipe (122) when key area (104) is activated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.