Method and device for automatic sleeve feed in roll-cutting machines of the backup roller type
CA 2083836 C · Owner: Beloit Technologies, Inc. · Inventors: Dorfel, Walter; Treutner, Jurgen; Smith, Philip
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process and device for automatic tube feed in back-up roll-type reel cutters. A wide web of paper or the like is wound off a wide roll in a take-off station. The wide web is divided lengthwise into at least two narrower partial webs in a cutting station. The narrower partial webs are wound on using winding tubes in two take-up stations each consisting of at least one take-up device which are arranged on either side of the back-up rolls each of the, adjacent partial webs being wound onto a different take-up station. The winding tubes are pushed into a feed device into a transfer position parallel to the back-up roll or the back-up rolls in a row one behind the other in association with the …
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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 May 26, 1990 and granted January 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 26, 2012.
- 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.