Height-adjusting collapsible mechanism for a button key
US6559399B2 · kind B2 · utility
71Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2001 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Apr 11, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2221/032
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A height-adjusting collapsible mechanism for a button key includes a pair of collapsible means for supporting the button key to move up or down above a substrate. At least one collapsible means has two levers pivotally crossed to form a cross angle in between. The levers have two bottom ends pivotally engaged with the substrate and spaced from each other at an interval. One of the bottom ends is located on a stopper slidable on the substrate. Moving the stopper may change the interval and the cross angle, and may thus in turn change the free height of the button key when external forcing is absent from the button key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.