An apparatus for controlling gas layer thickness on the surface of casting roll in twin roll strip caster
CA 2470700 A1 · Owner: Choi, Ju-Tae · Inventors: Lee, Yong-Gi; Choi, Ju-Tae; Cheong, Han-Nam
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for controlling gas layer thickness on the surface of casting rolls in a twin roll strip caster. The apparatus comprises: a pair of chambers (30) fixedly mounted on both lateral portions of the meniscus shield (9) in a width direction of a strip (6); blocking units (40) for blocking introduction of pollutants into the molten metal pool (5) wherein each of the blocking , units (40) includes front and rear barrier members (41 and 42) which are , mounted on each of the chambers (30) and in close contact with an outer periphery of the each casting roll (1) or (1a) and a blower (45) for , injecting inert gas toward the outer periphery of the each casting roll (1or 1a); …
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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 December 20, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 20, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2024.
- 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
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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.