Plug for use in a steel converter to minimize tapping off of slag
CA 1315100 C · Owner: Trentelman, Jozef G. M. · Inventors: Trentelman, Jozef G. M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plug of refractory material is used in a steel converter to minimize tapping off of slag. In use it floats at the steel/slag interface and lodges in the taphole to indicate the end of tapping. The plug has a polyhedral shape and is shankless. To improve its ability to roll the plug has a surface which consists of a plurality of generally flat faces lying in respective planes with the planes of every adjacent pair of faces intersecting at angles not less than 90° and the plane of each face intersecting the plane of at least one adjacent face at an angle greater than 90°. Preferably the plug has two symmetrical tapering halves.
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 March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- 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.