Can opener
CA 1237274 A · Owner: Davel, Peter E. · Inventors: Davel, Peter E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the invention of a manually operated can opener an angular drive shaft attaches to the upper handle of a pivotally connected pair of handles. At the higher end of said drive shaft a crank is rigidly attached and at the lower end, to rotate therewith a combination of an octagonal feed wheel and a cutting wheel forming a gripping groove attaches. Said gripping groove fits on the top rim of the can to be opened and assisted by a free-rotating smooth-rimmed pressure wheel, which attaches to the lower handle and fits under the bottom lip of the can bead, provides the forward thrust while the cutting wheel pierces and closely cuts the can lid.
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 May 31, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2005.
- 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.