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US 5,489,015 AGranted
Coin discrimination apparatus
AssigneeCoin Controls Limited
InventorDennis Wood
Life of this patent
Estimating the term…
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.
Claims15
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.
2 more elements
Dependencies are inferred from the claim text.