Safety switching apparatus having a first and a second input switch and method of manufacturing the same
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United States of America Patent
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Nov 30, 2004
Grant Date -
Mar 27, 2003
app pub date -
Aug 22, 2002
filing date -
Feb 29, 2000
priority date (Note) -
Expired
status (Latency Note)
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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.
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