Can opener
CA 2103648 C · Owner: Rival Company (The) · Inventors: Edwards, Billie Ray; Barrow, Mary Kathleen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A can opener of the type having a housing a motor, a feed wheel, for rotating a can about its axis a gear assembly connecting the motor and the feed wheel, and a cutter for severing a can lid from a can includes a cutter control associatively connected to the cutter and operable to bias a switch contact to a closed position while the cutter is severing the can lid from the can and to automatically open the switch contact after the can lid has been severed the cutter control comprising an integrally formed spring operable to engage an armature mounted on the housing, and a cutter support plate supporting the cutter and associatively connected to the cutter control the cutter support plate, …
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 9, 1993 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2015.
- 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.