Switching contact arrangement, in particular for keyboards and a keyboard
US4575589A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 5, 1984 |
| Grant date | Mar 11, 1986 |
| Priority date | — |
| Expiry date | Jul 5, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2227/018
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The switching contact arrangement contains a support or base (1), above it a layer of at least two tracks approaching each other at an angle, one of which comprises a switching contact surface (11). The other one (13, 13') is divided in the region of the switching contact surfaces (11) and their track sections, so that a space is formed there. An insulating layer is provided in the region of the track intersection to be formed. A layer (30) of electrically conductive material is then applied thereto, which has a recess in the region of the switching contact surfaces (11). This layer also serves as a bridge for the track intersection and as a switching contact surface for a switching surface (41 or 43) arranged thereabove and made of a flexible, electrically conductive material. In addition, the electrically conductive layer (30) serves as a spacer for the switching surface (41). A particularly compact switching contact arrangement is provided by integrating the switching contact surface and the bridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.