Continuously running rewinder with pressure roller
CA 1263855 C · Owner: Valmet Paper Machinery Inc. · Inventors: Hagel, Rauno; Bjorkman, Ari; Haapanen, Pekka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a continuously running rewinder with a pressure roller for winding a paper web (1) for, instance, from a supercalender onto a reel-up drum (2 3). The rewinder comprises roll stands (10) which are provided, with a primary drive for rotating a rewinding reel-up drum (3), a pressure roller assembly (4) with a pressure roller (6) via which the web (1) is routed to pass before entering the rewinding reel-up drum (3) and which can be actuated to swing from an open position to a closed position toward the roll stands (10) so that the pressure roller assembly (6) is pressed against the rewinding reel-up drum (3) to form with it a nip for the web (1). The rewinder in …
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
- Granted December 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 12, 2006.
- 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.