Method in a snap dome switch keyboard assembly for reducing contact bounce time
US4703139A · kind A · utility
30Cited by
22References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1986 |
| Grant date | Oct 27, 1987 |
| Priority date | — |
| Expiry date | Jun 20, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2233/022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A snap dome switch keyboard assembly including a printed circuit board having dual contact switch sites with piggy-back snap domes, button actuators for each of the piggy-back snap domes, and an elastomeric member arranged between the domes and the button actuators serving as a force transmission member materially reducing the contact bounce time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.