Magnetic card reader
CA 1084163 A · Owner: Sedley, Bruce S. · Inventors: Sedley, Bruce S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magnetic card reader for providing an output to a utilization device. A plurality of reed switches are arranged to coplanar relationship and means is provided for maximizing the flux of magnetized spots of a magnetically coded card so that a predetermined magnetized spot actuates a predetermined reed switch of the reader without requiring any internal magnetic biasing. The flux of the magnetized spots is maximized by providing relatively large contiguous areas of a polarity reversed from that of the magnetized spot which actuates a switch.
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
- Granted August 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 1997.
- 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.