Apparatus for cutting a paper web
CA 1259558 A · Owner: Valmet Paper Machinery Inc. · Inventors: Falk, Carl H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to cut a paper web which is wound in a drum reel-up, by, means of a transverse strip forming a free wedge-shaped end which, is passed around a new reeling drum driven by a surface winding drum, the invention proposes an apparatus comprising a conveying channel having a longitudinal aperture facing the surface winding drum, and extending below the web up to the vicinity of a nip defined by the surface winding drum and the new reeling drum at a place beside the web. The conveying channel is provided with means for producing gas jets arranged to actuate from both sides a length of strip means inserted into the conveying channel in such a manner as to maintain it in position therein …
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 September 19, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 19, 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.