Foil-type switching element with improved spacer design
US7187264B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2003 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | Feb 20, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2227/032
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A foil-type switching element comprises a first carrier foil and a second carrier foil arranged at a certain distance from each other by means of a spacer 10. The spacer 10 comprises at least one recess 12 defining an active area of the switching element. At least two electrodes and a layer of pressure sensitive material are arranged within the active area of the switching element between the first and second carrier foils in such a way that, in response to a pressure acting on the active area of the switching element, the first and second carrier foils are pressed together against the reaction force of the elastic carrier foils and an electrical contact is established between the at least two electrodes via the pressure sensitive material. The active area comprises an inner region 14 and a number of outer regions 18, the inner region having a generally convex shape and the outer regions extending outwardly from said inner region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.