King roll reeler
CA 2073020 C · Owner: Dropczynski, Hartmut · Inventors: Dropczynski, Hartmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to roll up paper or cardboard webs reelers with two king rolls (1, 2), are known in which the web (5) is deflected by one king roll (1) and is guided upwar-, dly through the gap between the king rolls (1 2). In order to replace the , reels (4) the, known reelers have, besides a device for severing the web (5) a device for , stopping, the web (5) that can be raised through the gap between the king rolls (1 2) , and put, against the reeled king roll. According to the invention a raisable and , lowerable sup-, port (12) that extends over the whole working width is arranged below the gap be-, tween the king rolls and carries at its upper and lower ends freely rotatable deflection, …
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
- Filed August 29, 1991 and granted March 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 29, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2013.
- 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.