Safety contact mat
AssigneeASO GmbH Antriebs-und Steuerungstechnik
InventorsHelmut Friedrich, Paul Meyer
Life of this patent
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Abstract
A safety contact mat has an upper mat half and a lower mat half with respective mutually facing spaced apart conductive layers, which are to be brought into contact in order to close an electrical contact. At least one of the mat halves is formed by a flat coextrudate of a non-conductive elastomer, a conductive elastomer as the conductive layer, and of a conductive woven material enclosed between the elastomers.
Claims21
A safety contact mat comprising an upper mat half and a lower mat half, each mat half having a conductive circuit layer, said circuit layers being in mutually facing spaced relationship so that said layers can be brought into electrical contact, at least one of said mat halves consisting of a flat coextrudate comprising a nonconductive elastomer, a conductive elastomer as said conductive circuit layer, and a conductive woven material enclosed between said nonconductive elastomer and said conductive elastomer.
A construction kit for a safety contact mat, said kit comprising:
- a pair of flat coextrudates each comprising a nonconductive elastomer, a conductive elastomer, and a conductive woven material enclosed between said nonconductive elastomer and said conductive elatomer, each said coextrudate having an outer edge;
- a plurality of dielectric spacers for spacing the conductive elastomer of one coextrudate from the conductive elastomer of the other coextrudate;
- a spacer strip for reception between the outer edges of respective coextrudates;
- and
- a connecting device having a pair of terminals for connecting to the conductive woven materials of respective said coextrudates.
Dependencies are inferred from the claim text.