Keyboard switch assembly having foldable printed circuit board, integral spacer and preformed depression-type alignment fold
US4066851A · kind A · utility
102Cited by
16References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1976 |
| Grant date | Jan 3, 1978 |
| Priority date | — |
| Expiry date | Jul 1, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/016
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Keyboard construction using a sheet of flexible and resilient non-conductive material preferably non-conductive plastic which is preformed in a predetermined manner for supporting both contact means and contactor means and which is adapted to be folded so that the contact and contactor means are positionable in spaced apart alignment whereby upon depression electrical contact may be made between said contact means and said contactor means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.