Winder for winding a running web
CA 2039876 A1 · Owner: Beisswanger, Rudolf · Inventors: Beisswanger, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A winder for winding a running web of paper foil, or similar, with a backing roll having the width of the web a winding drum on which the web is wound into a roll and a, first pair of swivel levers (primary levers) each of which features on its end a fork for receiving a journal of the winding drum and being with the other end so mounted in the area of the backing roll axis that the winding drum while, swiveling from a first position above the backing roll in the running direction of the web about the backing roll approaches the latter and passes thereby the primary section until reaching a second position in which the winding drum with the as yet incomplete paper roll is taken over by a …
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 April 5, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 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.