Coin discrimination apparatus
First Claim
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1. A coin discrimination apparatus comprising:
- means for defining a path for coins under test;
first and second inductor means for forming concurrent inductive couplings with a coin under test during its passage along the path;
switching means for causing energisation of the inductor means to produce a sequence of coin tests wherein for each test a different resultant inductive coupling is formed between the inductor means and the coin depending upon the manner of energisation of the first and second inductor means; and
sensor means for sensing said resultant inductive coupling for each of said tests in the sequence.
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Abstract
An apparatus for identifying coins uses inductive coupling of the coin with a pair of inductors. The apparatus includes a path for coins to be tested, first and second inductors for forming concurrent inductive couplings with the coin being tested, switches for energizing the inductors in specific manners so that a sequence of coin tests results, and a sensor for sensing the resultant inductive coupling for each of the tests in the sequence.
39 Citations
15 Claims
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1. A coin discrimination apparatus comprising:
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means for defining a path for coins under test; first and second inductor means for forming concurrent inductive couplings with a coin under test during its passage along the path; switching means for causing energisation of the inductor means to produce a sequence of coin tests wherein for each test a different resultant inductive coupling is formed between the inductor means and the coin depending upon the manner of energisation of the first and second inductor means; and sensor means for sensing said resultant inductive coupling for each of said tests in the sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification