Continuous chain caster and method
CA 2236656 C · Owner: Hunter Douglas Industries B.V. · Inventors: Speed, Bobby Bruce; Braun, Curt; Romanowski, Christopher A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A continuous chain caster has upper and lower mold assemblies (10 16) , comprising endless belts (12, 18) and chains (14 20) traveling at , synchronized speeds. The mold assemblies meet to form a mold channel (22) which is filled with molten metal from a headbox (24) and feed tip (27). As the molten metal passes through the mold channel the metal solidifies into , the shape of the mold channel. Each belt is positioned outside the corresponding chain so that the smooth surface of the belt defines the surface of the mold channel thereby preventing the formation of fins between mold blocks (32) which make up the chain, protecting the chain blocks and neutralizing deformations in the …
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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 13, 1996 and granted August 5, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 13, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 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.