Coin testing apparatus

Details Coin testing apparatus Coin testing apparatus

1988-08-08

1989-07-11

Cuchlinski, Jr., William A.

Measuring and testing

Coin

194317, 194318, G07F 302

Patent

active

048459941

ABSTRACT:
An apparatus for testing a coin provides first, second, and third digital signals respectively indicative of the coin's metallic content, diameter, and thickness. A microprocessor-based control circuit identifies the coin as being one of a number of known coins in response to the digital signals. If the coin does not match any of the known coins, it is identified as a false coin, for example, a slug or foreign money.

REFERENCES:
patent: 4184366 (1980-01-01), Butler
patent: 4334604 (1982-06-01), Davies
patent: 4471864 (1984-09-01), Marshall
patent: 4572349 (1986-02-01), Funya et al.
patent: 4666027 (1987-05-01), Ostroski et al.
patent: 4705154 (1987-11-01), Musho et al.
patent: 4749074 (1988-06-01), Veki et al.
Hewlett Packard HCTL-2000; Jan. 1986.
Analog Devices AD1170; 9/86.
Analog Devices AD521.
Analog Devices AD536A.

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