Take-off apparatus for plastic tubular sheets
CA 2235892 C · Owner: Klaus Reinhold Maschinen- Und Geratebau Gmbh · Inventors: Baumer, Josef; Ratz, Gerd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Take-off equipment for tubular sheets are provided for plastic film produced by an extruder with a stationary blowing head. Collapsing boards collapse the tubular sheet with expanded circular cross section and stationary conveying equipment transports the collapsed tubular sheet to stationary wind-up equipment. A reversing system with at least one deflecting roller and at least one turning bar is pivotably supported between the collapsing boards and the stationary conveying equipment. The reversing system includes at least two turntables which are at a distance from one another vertically corresponding to the at least one deflecting roller and the at least one turning bar. The turntables …
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 24, 1998 and granted June 18, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2020.
- 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.