Discriminator for bimetallic coins

Details Discriminator for bimetallic coins Discriminator for bimetallic coins

2005-02-08

2005-02-08

Walsh, Donald P. (Department: 3651)

Check-actuated control mechanisms

Including means to test validity of check

By testing material composition

C324S222000

Reexamination Certificate

active

06851541

ABSTRACT:
A coin discriminator has a coin path along which a coin, containing a first portion and a second portion made of different metals and/or metal alloys, is arranged to pass. An electrical mechanism supplies time-varying drive signals to the coil mechanism. A detection mechanism detects eddy currents induced in the coin by the coil mechanism. The coil mechanism is arranged to induce in the coin an eddy current loop, which in a predetermined region of the coin crosses a bond between the first and the second portions of the coin.

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