Backlighted illuminated keyboard
US4449024A · kind A · utility
83Cited by
13References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 3, 1983 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | May 3, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/004
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlighted illuminated keyboard including a printed circuit board on which is mounted in a central location a single lamp easily replaceable from the backside of the board and which extends into a clear plastic light diffuser over which an overlay is disposed and a bezel is provided to define key areas in the translucent overlay such that the single lamp disperses light energy through the diffuser to light up the entire overlay. The single lamp is mounted in a socket formed in the printed circuit board and held in place by a swivel arm which can be swung to one side to allow ease of removal of the lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.