Threading device and method for threading the tail of the web
CA 2309657 A1 · Owner: Ahvenniemi, Vesa · Inventors: Ahvenniemi, Vesa; Kytonen, Pauli; Laurikainen, Mauri
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A threading device and a method for threading a tail of a web wherein, for , guiding the path of a tail (T) separated from a full-width web (W) in a paper machine or a paper finishing device, the threading device comprises a suction channel (2), placed at least partly in a paper machine portion and provided with a reduced pressure for gripping the tail (T) and transfer means (S) for , transferring the suction channel (2) in the portion of the paper machine and simultaneously for releasing the tail (T) to the portion. In the method for threading of the tail, before threading the full-width web (W) through a portion in a paper machine, the tail (T) is separated from the web (W) the , …
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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
- Filed November 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2020.
- 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.