Pull off device for flattened tubes of plastic
CA 2021428 C · Owner: Reinhold, Klaus · Inventors: Reinhold, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pull-off apparatus for tubular stock of plastic foil that is produced by an extruder with a fixed blowing head comprises a lay-flat apparatus for the tubular stock that is fed in with an expanded circular cross section and a fixed, conveyor system for moving the laid-flat tubular stock to a fixed winding system. At least one guide roller and one turning rod to deflect the tubular stock by 180° in each instance, and simultaneously change its direction of movement, are arranged between the lay-flat apparatus and the conveyor system; these, like the lay-flat apparatus are supported so as to be able to pivot reversibly within an apparatus frame in a horizontal plane about the axis of the …
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 July 18, 1990 and granted December 13, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 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.