Coin validator calibration
CA 2255632 A1 · Owner: Coin Controls Ltd. · Inventors: Walker, Robert Sydney; Wood, Dennis; Hutton, Les
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coin validator is calibrated by inserting a calibration key (K) 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 (C1 C2, C3) so as to produce a calibration value of signals from 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.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 20, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 20, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.