Drying section for web-handling apparatus
CA 2130792 A1 · Owner: Kotitschke, Gerhard · Inventors: Kotitschke, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The drying section particularly of a papermaking machine has a two-felt drying group (13) with an upper row of cylinders and an upper felt (OF) and with a lower row of cylinders and a lower felt (UF). In each row of cylinders two adjacent cylinders form a sub-group (18 19), having a deflection suction roll (18' 19') disposed, therebetween. The web to be dried (9) passes alternately through the upper and lower sub-groups. Opposite each deflection suction roll of one row of cylinders lies a section of the felt path of the other row of cylinders the space located therebetween being free from components to facilitate removal or paper broke.
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 August 24, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 24, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 2016.
- 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.