Method for cutting minerals and cutting machine
CA 1061811 A · Owner: Vereinigte Osterreichische Eisen- Und Stahlwerke-Alpine Montan Aktienges Ellschaft · Inventors: Wrulich, Herwig; Zitz, Alfred; Sigott, Siegfried
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a method for cutting minerals utilizing a cutting tool means provided with cutting teeth, said tool means rotating about an axis approximately parallel to the winning face and being moved at a feeding rate essentially in axial direction, said method characterized in that several grooves distant from each other are carved after each other in engaging sequence and that in dependence on the mineral properties the feeding rate is increased with respect to the rotatory velocity when a brittle mineral is to be cut whilst the feeding rate is diminished with a tough mineral.
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 September 4, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 4, 1996.
- 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.