Stopper for a tap hole of a steel converter and method of operatinga converter
CA 1291873 C · Owner: Hoogovens Groep Bv · Inventors: Van Es, Machiel A.H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stopper for a tap hole of a steel converter has a plug which can at least partly be fitted into the tap hole, and holding means for holding the plug in place in the tap hole. To avoid entry of slag into the tap hole, even on initial tipping the, plug is substantially cylindrical in shape and can be moved along the whole length of the tap hole. The holding means are adapted to lose their holding action when the stopper is subjected to the heat of the molten steel upon tipping of the converter.
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 November 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2008.
- 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.