Key switch arrangement for notebook computers
US5763842A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Nov 19, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H3/125
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A key switch for notebook computers, including a bottom frame having two pairs of upright lugs spaced near two opposite sides, a membrane circuit mounted on the bottom frame, a key cap, a rubber cone supported on the membrane circuit and compressed by the key cap to trigger the membrane circuit in producing an electrical signal, a first link having one end pivoted to the key cap and an opposite end coupled to one pair of upright lugs of the bottom frame by a slip joint, and a second link pivotably coupled to the first link in its middle and having one end pivoted to the key cap and an opposite end pivoted to the other pair of upright lugs of the bottom frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.