Method and device for sealing a tap hole in metallurgical containers
CA 2334963 A1 · Owner: Sms Schloemann-Siemag Aktiengesellschaft · Inventors: Wu, Wei-Ping; Pleschiutschnigg, Fritz-Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The aim of the invention is to provide a method for sealing a tap hole (2) in metallurgical containers and a tapping system for carrying out slag-free tapping. To this end, the bott for closing the tap hole comprises a bott sleeve (7) which receives a heat-resistant flowable material (8). The time at which the bott sleeve is inserted is controlled automatically. After the bott sleeve has been introduced, the tap hole is closed from the outside of the container. The material from which the bott sleeve is made changes in its consistency and/or form under the influence of temperature in such a way that , the flowable material spreads in the tap hole hereby sealing it.
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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 June 10, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 10, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 2021.
- 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.