Coin validator
CA 2086684 C · Owner: Microsystem Controls Pty. Ltd. · Inventors: Malzard, Norman Raymond; Smith, Peter Ronald; Wolstencroft, Phillip Andrew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coin validator (10), has a coin path (26) which passes between one set of, detect coils (40 42). The set a, of coils (40, 42) is connected in a detect circuit, and the, coils (40 42) are adapted to, be energised with a single pulse. The decay curve (70), of the voltage in the coils (40, 42) is processed to pro-, duce a set of three numbers of clock counts defining, each coin; which are stored in a microprocessor. pre-, programming of the validator ( 10) involves generating, sets of numbers for representatives of a coin type to, create three ranges of numbers, within which respec-, tive range subsequent coin's set of numbers must fall in, order for it to be defined as an example of the …
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 July 4, 1991 and granted May 21, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 4, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 4, 2013.
- 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.