Coin selector for vending machine

Details Coin selector for vending machine Coin selector for vending machine

1980-03-05

1982-04-06

Rolla, Joseph J.

Check-actuated control mechanisms

Including noncontacting, relatively movable parts connected...

194102, 324229, G07F 302

Patent

active

043231489

ABSTRACT:
A coin selector apparatus of the electronic type for a vending machine into which a coin thrown in the selector is moved through electromagnetic fields each produced by a coil assembly constituting a part of an oscillator oscillating at a predetermined frequency. Variations in the output oscillation frequencies of the oscillators are detected and utilized for discriminating between coins with respect to their shape, material and thickness.
Further, a selected oil assembly is provided with a coil gap that is changeable in association with the closing and opening of the coin passage to cause a variation in the corresponding output oscillation frequency and to produce a coin rejection signal.

REFERENCES:
patent: 2146442 (1939-02-01), Price
patent: 2982389 (1961-05-01), Dietrich
patent: 3918564 (1975-11-01), Heiman et al.
patent: 3998309 (1976-12-01), Mandas et al.
patent: 4006405 (1977-02-01), Greenwood et al.
patent: 4108296 (1978-08-01), Hayashi et al.
patent: 4184366 (1980-01-01), Butler

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