Pressing device for winding machines for producing tubular packs of printed products
CA 2068686 C · Owner: Ferag Ag · Inventors: Kramps, Jan W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The pressing device for winding machines for winding printed products supplied in scale formation contains at least two pressing belts (5.1 5.2), which together cover a sector of the roll periphery of at least 270°. As a result a uniform, strong contact pressure on the roll is exerted, which is controllable in a special embodiment. By means of movement groups (3, 6, a, 17.1, 17.2, 21.1 21.2) the belts (5.1, 5.2), can be completely raised and subsequently a full roll can easily be ejected.
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 May 14, 1992 and granted February 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2014.
- 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.