Keyboard
US4608465A · kind A · utility
9Cited by
6References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1985 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | Jul 2, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2215/036
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A keyboard switch has a decoration sheet disposed above a printed circuit board in spaced relation thereto so that a flexible contact disposed between the printed circuit board and the decoration sheet can be moved into and out of contact with the printed circuit board by the depression of the decoration sheet. The decoration sheet is made of a material having a low extensibility, with recessed deforming areas that also serve as key symbols formed integrally with the decoration sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.