Coin detection device and associated method
CA 2184147 C · Owner: Young, Joe Lee · Inventors: Costello, Steven Michael; Young, Joe Lee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coin detection device includes one or more optical sensors positioned along a coin path and capable of detecting movement of a coin thereby, a coil energizable to generate an electromagnetic field in the region of the coin path, a processing means connected to the optical sensor or sensors so as to receive signals therefrom and connected to a detector which is capable of detecting the coin as it enters and leaves the region of the coil the processing, means is operable to establish an optical size time based upon signals received from the optical sensor or sensors and a magnetic size time based upon signals received from the detector and to further establish a ratio of the magnetic size …
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 August 26, 1996 and granted October 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 2018.
- 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.