Rolling mill
CA 1077751 A · Owner: Escher-Wyss Limited · Inventors: Stotz, Wolf-Gunter; Lehmann, Rolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rolling mill is disclosed wherein at least two drive rolls are mounted for rotation within a frame with each drive roll, being rotatably supported by at least one backing roll and at least one working roll is mounted for rotation between the drive rolls to define at least one path for passage of material to be rolled. While each working roll is freely rotating it is, rotatably driven by surface friction produced by engagement with at least one of the drive rolls. Each working roll has a diameter less than the diameter of the drive rolls and the mounting position is such that the rotational axis of each working roll is substantially in the same working plane as the rotational axis of the …
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 May 20, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 1997.
- 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.