Improved method and apparatus for reeling a traveling web into a wound web roll
CA 2197776 C · Owner: Metso Paper, Inc. · Inventors: Lindstrand, Bruce L.; Didier, James J.; Wight, Ernest William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for reeling a traveling web (w) such as the paper web produced on a papermaking machine comprises the concept of winding the on-coming traveling web onto a reel spool (16) which is horizontally supported rotatively and which, in a preferred embodiment, moves translationally in a direction from the dry end of the papermaking machine towards the wet end of the papermaking machine as the diameter of the wound web roll (20) increases. The reel spool (16) is supported on a pair of spaced substantially horizontally disposed rails. The on-coming web is first partially wrapped over a segment of a translationally movable support drum (44) with the upper side (wu) of the 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 August 14, 1995 and granted October 10, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2017.
- 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
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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.