Arrangement for drying section of paper machine
CA 2273684 A1 · Owner: Tamfelt Oyj Abp · Inventors: Taipale, Seppo; Turpeinen, Terttu
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 for a drying section of a paper machine, the arrangement comprising a fine wire (5a) and a coarse wire (5b) that are arranged to pass between metal bands (2, 3) of a band dryer (1) together with a web (4) to be dried. The fine wire (5a) comprises at least three interwoven textural layers wherein the outermost layers, in other words a surface (10) and a bottom (11), have a finer texture than the middle section (12) situated between them. According to a preferred embodiment, the surface layer (10) is provided with a denser texture than the bottom (11) which, in turn, has a denser texture than the middle section (12).
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 June 4, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 4, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2021.
- 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.