Arrangement in tail threading in a multinip calender of a paper machine
CA 2444646 C · Owner: Kallio, Ismo · Inventors: Kallio, Ismo; Linnonmaa, Pekka; Laitio, Juha
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an arrangement in tail threading in a multinip calender of a paper machine. The multinip calender comprises rolls (11.1 - 11.6) that form nips (N1 - N5) extraction rolls (16.1 - 16.4) as well as tail threading means for guiding the tail (T) to be transferred during tail threading through the multinip calender. The arrangement includes a holding point (12) adapted prior to the last nip (N5) and a cutting device (14). The arrangement further includes a support device (15) adapted at the holding point (12) for supporting the tail (T) during cutting.
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 October 10, 2003 and granted February 8, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 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.