Method in winding a web
CA 2221180 C · Owner: Valmet Corporation · Inventors: Leskinen, Arto; Koutonen, Pauli; Malmi, Jarmo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method in winding of a web wherein the web (W) is wound, onto a spool (14) on support roll of a support roll (16) while passed through a nip (N) formed between the support roll (16) and the roll (15) that is being produced. The spool (14) is supported at least partly. The spool (14) the roll (15) is supported and/or loaded by means of a device (20) whose position can be shifted. At the initial stages of the winding, the loading/support unit/units (24) of said device (20) is/are shifted substantially in the plane passing through the axes of the support roll (16) and of the roll (15) that is being produced so as to load and/or to support the roll (15) that is being …
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
- Filed May 19, 1995 and granted October 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 19, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 2017.
- 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.