Hot shearing apparatus
CA 2003883 A1 · Owner: Elhaus, Friedrich W. · Inventors: Elhaus, Friedrich W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hot shearing apparatus for shearing heated round or flat section bars of light metal in billets comprises a stationary shearing ring 8 and a movable shearing ring 11. Both shearing rings are divided into shell halves 21,22 and 31,32, respectively, and adapted to be spread crosswise in translatory sense. This facilitates the feeding of material and improves the cutting accuracy.
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 November 24, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2011.
- 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.