Method and apparatus for tail threading of a paper web in a finishing machine for paper
CA 2483055 A1 · Owner: Kinnunen, Jorma · Inventors: Ahvenniemi, Vesa; Kinnunen, Jorma
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a finishing machine for paper that is arranged to guide a paper web along a predetermined path, a tail of the web or an auxiliary member (6) for transferring the tail of the web is drawn with a traction device (2) comprising power transmission of its own by means of which the traction device moves in relation to a guide (1) extending in the machine direction. The movement of the traction device in relation to the guide is attained by means of a friction contact of one or several drive wheels (3) of the traction device with the guide (1), and the friction contact plane of the guide (1) curves in directions perpendicular thereto in accordance with the travel path of the paper web.
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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 April 30, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 30, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2025.
- 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.