Folding keyboard having key modules with asymmetrical connection points
US6585440B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2001 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Jul 23, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2223/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A folding keyboard includes a fixed key module and one or more mobile key modules. The key modules are joined together by links between them. Two ends of the links between the key modules are joined at asymmetric positions. The mobile key module can turn 180 degrees to lie against the fixed key module. The folding keyboard is capable of being frontally folded, showing the whole arrangement of keys after unfolding, and being used immediately after unfolded. Moreover, the folding keyboard can be relatively shrunk by way of compression of the key units to reduce the thickness, and can be designed to be a triply-folded or quadruply-folded structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.