Check-actuated control mechanisms – Including means to test validity of check – By testing material composition
Patent
1990-04-19
1992-07-21
Bartuska, F. J.
Check-actuated control mechanisms
Including means to test validity of check
By testing material composition
324225, G07D 508
Patent
active
051315181
ABSTRACT:
A coin testing apparatus has a sensor outputting a detected signal corresponding to a deposited coin, a determinator for determining the value of the detecting signal, a discriminator for discriminating the authenticity and type of the coin by comparing the determined value with a coin acceptance range defined by maximum and minimum reference values, an initializor for initializing the coin acceptance range and memory for renewing the coin acceptance range by adding a predetermined value to or subtracting the predetermined value from the maximum and minimum reference values, respectively, when the practical determination range varies. Since the coin acceptance range is automatically corrected by the operation even if there is a variation in the range of the detected signal due to a drift of an electronic circuit or by variation in temperature, a correct and precise determination can be achieved.
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Bartuska F. J.
Sanden Corporation
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