Apparatus for drilling and plugging tapholes in a shaft furnace
CA 1097952 A · Owner: Wurth (Paul) S.A. · Inventors: Ulveling, Leon; Metz, Jean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compact apparatus for drilling and plugging a taphole of a shaft furnace, the furnace including a tap channel through which molten metal may flow, the tap channel extending from the taphole in a direction generally radially with respect to the axis of the furnace. The apparatus for drilling and plugging the taphole includes a drilling device and a plugging device each device mounted, on the end of an arm the arm pivotably mounted about an axis inclined from the vertical to allow movement of the devices in an inclined plane between a position of retraction and a position of operation. The arm of the drill device and the arm of the plugging device are positioned on one side of the tap …
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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
- Granted March 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 1998.
- 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.