Check-actuated control mechanisms – With additional – disparate means preventing fraudulent...
Patent
1989-12-14
1991-09-24
Bartuska, F. J.
Check-actuated control mechanisms
With additional, disparate means preventing fraudulent...
194318, G07F 302
Patent
active
050507192
ABSTRACT:
A coin receiving apparatus for a vending machine is disclosed which has a coin detector for producing an output corresponding to the diameter of a deposited coin. One or more additional coin detectors of a differential transformer type are sequentially arranged adjacent to the coin diameter detector in the coin detection path for producing an output corresponding to coin characteristics other than the coin diameter. A coin determination circuit judges whether the deposited coin is true or false in response to the detected outputs from the respective coin detectors. A coin receipt control circuit responsive to the true or false judgement output from the coin determination circuit controls the receipt or return of the deposited coin. The deposited coin is received in the receiving apparatus if the detected outputs from all of the coin detectors indicate that the deposited coin is true. A successive deposit determination circuit judges whether the last deposited coin passes through an initial coin detector on the coin detection path before the preceding deposited coin passes through a final coin detector. A timer starts to operate when the deposited coin passes through the final coin detector and responsive to an output of the successive deposit determination circuit. A determination output control circuit applies the true judgement output from the coin determination circuit to the coin receipt control circuit only when the timer does not operate after the deposited coin passes through the final coin detector. The coin receiving apparatus having such a successive deposit determination circuit, timer and determination output control circuit reduces the coin return ratio.
REFERENCES:
patent: 4228811 (1980-10-01), Tanaka et al.
patent: 4625851 (1986-12-01), Johnson et al.
Bartuska F. J.
Sanden Corporation
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