Keyboard with distance-adjustable keys
US7594772B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2006 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Nov 15, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2223/052
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A keyboard with intervals-adjustable keys has a baseboard, plural pairs of key modules, at least one piezoelectric device and a differential mechanism. The plural pairs of key modules are symmetrically arranged on the baseboard between the vertical axis of the baseboard. The piezoelectric devices connected with the plural pair of key modules are used to output electrical signal. The differential mechanism has at least one differential gear and at least one migration controller. When one of these pairs of key modules is forced to move, the pair of key module drives the corresponding migration controller to propel all of the differential gears. Then the other migration controllers and key modules are driven to move.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.