Patents Assigned to Coin Control Limited
  • Coin validator calibration
    Patent number: 6311820
    Abstract: The coin validator is calibrated by inserting a calibration key different from coins to be validated in a static position in the validator such that eddy currents are induced in the key by operation of its sensor coils so as to produce a calibration value of signals form the sensor coils as a function of the individual characteristics of the validator. The calibrating value of the sensor signals may be compared with ensemble data concerning corresponding calibration values derived from an ensemble of coin validators of the same design.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: November 6, 2001
    Assignee: Coin Control Limited
    Inventors: Malcolm Reginald Hallas Bell, Robert Sydney Walker, Dennis Wood, Les Hutton