Collapsible keyboard
US6623195B2 · kind B2 · utility
3Cited by
15References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2001 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Sep 28, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2223/052
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A collapsible keyboard comprises at least one keyboard module, and each keyboard module has a plurality of keyswitches arranged in array pattern. At least one membrane circuit is provided to connect the plurality of keyswitches. When the keyboard is in an operation state, each keyswitch having a predetermined separation with adjacent keyswitch, and the separation is the same as that in a standard keyboard. To shrink the keyboard, the plurality of keyswitches can be arranged in a collapsed state to reduce the transverse size of the keyboard, the lengthwise size of the keyboard, or both sizes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.