Method of and a device for raising flattened parallelepipedic blanks
CA 1312494 C · Owner: Ab Tetra Pak Of Ruben Rausing Gata · Inventors: Traegaardh, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, In a method for raising creased and flattened parallelepipedic blanks to form rectangular containers a, front edge of a blank is discharged from between a pair of rollers and is moved back towards the rollers by pressure from a pusher. This opens the blank to such a degree that it now extends nearly perpendicular to the discharge direction. Subsequently the pusher is withdrawn to allow the blank to return to a rectangular cross section.
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
- Granted January 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 2010.
- 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.