Full travel, sealed, fully backlighted keyboard
US5612692A · kind A · utility
64Cited by
38References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1995 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Nov 8, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2300/014
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A backlighted, full travel, sealed keyboard. A translucent membrane is disposed between the keys and a printed circuit board and includes a gasket around its perimeter which is sealingly engaged by the housing for the keyboard. Domes for each key are formed integrally with the membrane, so that a liquid tight seal is formed between the keys and the printed circuit board. The keyboard is backlighted with LEDs disposed on the printed circuit board. The domes are configured to allow full travel for each of the keys so that a desired tactile feedback is provided to the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.