Compact keyed input device
US5973621A · kind A · utility
58Cited by
8References
20Claims
0Family size
Inventor
Key dates
| Filing date | Dec 17, 1996 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Dec 17, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2223/0345
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a keypad device of the type that includes a unique output function as a consequence of physically adjacent keys or key equivalents operated simultaneously: a continuous elastomeric material with integrally molded key cap structure identifying individual and combination keys of minimal height differential with a sealed cursor control device placed with the key matrix a indentation in a non-exposed side near the center of a plurality of individually actuatable key switches; individual key switches in excess of the number of individual key caps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.