Coin discrimination apparatus
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United States of America Patent
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Nov 28, 1995
Grant Date -
N/A
app pub date -
Apr 28, 1994
filing date -
Sep 24, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Coin discrimination apparatus includes a coin rundown path along which coins roll so as to impact a snubber provided with a piezo electric device. The coin impact produces an oscillatory voltage output from the device, which is sampled over a predetermined period for its peak maximum and minimum values. The values are combined in a predetermined relationship to produce a coin parameter signal indicative of coin mass and the material from which it is made. Coin acceptability is determined on the basis of the value of the coin parameter signal.
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