Check-actuated control mechanisms – Including means to test validity of check – By testing material composition
Patent
1998-05-21
2000-05-02
Bartuska, F. J.
Check-actuated control mechanisms
Including means to test validity of check
By testing material composition
G07D 508
Patent
active
06056105&
ABSTRACT:
A device and method are set forth for determining the authenticity of a coin or token which includes a housing defining a passageway to pass the coin to be tested. Coils are disposed about the housing to generate magnetic flux lines at the passageway. Detection circuits detect changes in amplitudes of the frequencies generating the flux and signals are created corresponding thereto. These signals are compared at a processor to stored data corresponding to amplitude changes for an authentic coin to determine if the coin is authentic.
REFERENCES:
patent: 5078252 (1992-01-01), Furuya et al.
patent: 5191957 (1993-03-01), Hayes
patent: 5353906 (1994-10-01), Takamisawa
Anderson Philip J.
Asahi Seiko Co. Ltd.
Bartuska F. J.
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