Method and apparatus for reeling a web
CA 1278558 C · Owner: Valmet Paper Machinery Inc. · Inventors: Oinonen, Hannu Untamo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A web, such as a paper web is reeled onto a core tube, supported by first and second carrying rolls with a topside pressing roll pressing down on the web roll as it is being formed. The completed web roll is removed from the carrying rolls by at least two lowering rolls which are lifted along a path into engagement with the completed web roll the lowering, rolls contacting the web roll after being rotatably accelerated to have an appropriate surface speed. Substantially simultaneously with the completed web roll being lowered a new, core tube is inserted in the throat between the first and second carrying rolls. The web is cut, preferably without interrupting its movement, and the newly cut …
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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
- Granted January 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 2008.
- 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.