Coin validator for testing the mass of a coin

Details Coin validator for testing the mass of a coin Coin validator for testing the mass of a coin

1994-04-12

1996-02-27

Bartuska, F. J.

Check-actuated control mechanisms

Including means to test validity of check

By testing material composition

194339, G07D 504

Patent

active

054941458

ABSTRACT:
A coin validator which discriminates valuable coins includes a coin path along which the coins roll. A leaf spring is fixed at one end and has a spring member which projects into the coin path at the other end when the leaf spring is in a rest position. The leaf spring oscillates when the spring member is struck by a rolling coin. An evaluation circuit produces a timing signal as a function of the elapsed time between the striking of the spring member by the rolling coin and the time when the spring member first approaches the rest position after being struck. A memory stores reference values corresponding to valuable coins and a comparator compares the timing signal to the reference values for discriminating valuable coins.

REFERENCES:
patent: 3559788 (1971-02-01), Jensen et al.
patent: 3653481 (1972-04-01), Boxal et al.
patent: 5316118 (1994-05-01), Ibarrola et al.

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