Safety switching apparatus having a first and a second input switch and method of manufacturing the same
US6825579B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2002 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Feb 19, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H47/004
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a safety switching apparatus having a first and a second input switch, whose respective switch settings define an input-side manipulated variable redundantly with respect to one another. The safety switching apparatus furthermore has at least one output switching element which is arranged in an output circuit. In addition, an evaluation and control unit is provided, which drives the at least one output switching element as a function of the defined manipulated variable. Switching contacts of the first and of the second input switch are coupled with one another, in terms of their switch positions, via a common actuating member. According to one aspect of the invention, the switching contacts of the first and of the second input switch are spatially arranged in one plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.