Coin detecting apparatus
CA 1134475 A · Owner: Gaea Trade And Development Company Limited · Inventors: Davies, Ronald C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coin, spurious coin and the like is passed in close proximity with the inductance of the resonant tank circuit of an oscillator and varies the losses of the tank circuit and thereby the amplitude of a signal produced by the oscillator in accordance with the metal content of the coin, and the like. The signal produced by the oscillator is converted to a control signal having an amplitude which when in a predetermined range indicates an acceptable coin and which when outside the range indicates a rejectable spurious coin, and the like. After passing the inductance the coin is selectively, directed to an accepted location or a rejected location in accordance with the amplitude of the control …
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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
- Granted October 26, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 26, 1999.
- 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.