Machine-proof material composite for coins and medals

Details Machine-proof material composite for coins and medals Machine-proof material composite for coins and medals

A - Human Necessities

44

C

A44C 21/00 (2006.01) G07F 1/06 (2006.01)

Patent

CA 2157847

Disclosed is a novel blank for coins or medals having features which render particularly reliable the detectability in coin testing machines of the coins produced therefrom. The blank comprises an inner disc of a laminate of a nickel layer and a copper-nickel alloy layer and an outer ring made from a metal or metal alloy having an electric resistance which clearly differs from that of the inner disc.

Cette invention concerne un nouveau flan de monnaie ou de médaille dont les propriétés le rendent particulièrement détectable dans les contrôleurs de validation. Il se compose d'un disque intérieur stratifié comprenant une couche de nickel et une couche d'alliage cuivre-nickel et d'un anneau extérieur en métal ou alliage de métaux affichant une résistance électrique nettement différente de celle du disque intérieur.

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