Safety switching device and system of safety switching devices
US6628015B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2002 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Sep 5, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H47/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a safety switching device for connecting and safely disconnecting an electrical load, in particular an electrically driven machine. The safety switching device comprises at least a first and a second electronic switching element, at least a first and a second output terminal, and at least one input terminal for a first switching signal that acts on the switching elements. According to one aspect of the invention, the first and the second switching element each have an output which, depending on the first switching signal, produces an output signal at a first potential or at a second potential. The output of the first switching element is connected to the first output terminal, and the output of the second switching element is connected to the second output terminal. The invention further relates to a system of safety switching devices of this kind.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.