Device for monitoring a space by series-connected normally-open contacts, in particular cover interlock switches in a security enclosure

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United States of America Patent

PATENT NO 8461990
SERIAL NO

12745485

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Abstract

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A device for monitoring a space by changing a sequence of a serial interconnection of closing contacts, in particular of cover switches in a security housing, having a series circuit variation apparatus, a security cover, at least two closing contacts, and a protective circuit, wherein said at least two closing contacts each have an open, electrically nonconductive state and a closed, electrically conductive state, wherein said security cover is set up to put each of said at least two closing contacts in a closed, electrically conductive state, wherein said protective circuit is set up to detect an opening of at least one of said at least two closing contacts, wherein said series circuit variation apparatus serially interconnects said at least two closing contacts, wherein the sequence of the serial interconnection of said at least two closing contacts can be changed by said series circuit variation apparatus.

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Patent Owner(s)

Patent OwnerAddress
VERIFONE GMBHKONRAD-ZUSE-STRASSE 19-21 BAD HERSFELD 36251

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ostermöller, Michael Bad Hersfeld, DE 4 60

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