Check-actuated control mechanisms – Including means to test validity of check – By testing material composition
Patent
1992-03-04
1993-09-14
Bartuska, F. J.
Check-actuated control mechanisms
Including means to test validity of check
By testing material composition
G07D 508
Patent
active
052440702
ABSTRACT:
An apparatus for sensing coins is disclosed which is capable of distinguishing between valid and non-valid coins as well as between the different denominations of coins. The apparatus is useful for application in coin-operated parking meters as well as other coin-operated machines. The apparatus makes use of a twin-coil sensor which enables it to distinguish between small coins with high metal content and large coins with low metal content.
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Carmen Ralph H.
Rodgers James M.
Bartuska F. J.
Duncan Industries Parking Control Systems Corp.
Ryther James P.
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