Coin checking device for a vending machine

Details Coin checking device for a vending machine Coin checking device for a vending machine

1977-02-04

1978-05-30

Reeves, Robert B.

Check-actuated control mechanisms

Including noncontacting, relatively movable parts connected...

G07F 302

Patent

active

040919080

ABSTRACT:
A coin checking device for a vending machine capable of electrically examining whether an inserted coin is a true coin or a counterfeit one as well as kind of the coin. The device detects a waveform representing passage of the coin and also whether the peak level of the waveform appears in a predetermined window or not and, if the peak level is detected in the window, judges that the inserted coin is a true one.

REFERENCES:
patent: 2540063 (1951-01-01), Victoreen
patent: 3901368 (1975-08-01), Klinger
patent: 3918563 (1975-11-01), Schwippert et al.
patent: 3933232 (1976-01-01), Searle et al.

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