Coin detector and counter

Details Coin detector and counter Coin detector and counter

1988-09-19

1991-03-12

Skaggs, H. Grant

Check-actuated control mechanisms

Including means to test validity of check

By testing material composition

73163, 232 7, G07D 508

Patent

active

049986104

ABSTRACT:
A coin detector and counter comprising a coreless oblong transmitter coil and a coreless oblong receiver coil spaced apart on opposite sides of a coin path arranged to cause the entire diameter of each coin to pass between the coils. The maximum peak voltage generated in the receiver coil upon passage of each coin is measured as a determination of the conductance of each coin. By comparing the measured conductance of each coin with the known conductance of coins, each coin is thereby identified and counted.

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patent: 3667485 (1972-06-01), Sesko
patent: 4086527 (1978-04-01), Cadot
patent: 4353453 (1982-10-01), Partin et al.
patent: 4361218 (1982-11-01), Van Dort
patent: 4371073 (1983-02-01), Dubey
patent: 4493411 (1985-01-01), Heiman
patent: 4660705 (1987-04-01), Kai et al.
patent: 4717006 (1988-01-01), Chapman et al.
patent: 4842119 (1989-06-01), Abe

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