Computer keyswitch with accurately positioned rubber domes
US6288353A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 1, 2000 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | May 1, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2215/012
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A computer keyswitch with accurately positioned rubber domes. The computer keyswitch includes a base plate, a membrane circuit board installed on the base plate, and a rubber sheet positioned on the membrane circuit board. The membrane circuit board has a plurality of pressure sensors. The rubber sheet has a plurality of upwardly protruding rubber domes each above a corresponding pressure sensor, and a plurality of rubber pegs around each of the rubber domes. The base plate and the membrane circuit board have a plurality of fastening holes positioned corresponding to the rubber pegs. The rubber pegs will engage with the fastening holes to accurately position the rubber domes of the rubber sheet on the pressure sensors of the membrane circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.