A forming device in packaging machines
CA 2043098 C · Owner: Tetra Pak Holdings S A · Inventors: Mansson, Henrik; Lundmark, Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Forming devices in packaging machines of the type which reforms tubular packaging material of substantially circular cross-sectional configuration into individual package containers of quadrilateral cross-sectional configuration normally consist of pairwise cooperating forming flaps which are of U-shaped cross-section. In order to prevent the packaging material from being pinched between the shank surfaces of the flaps when the flaps are caused to surround the packaging material tube the shank, surfaces are designed to be undulatory i.e. alternatingly, with projections and recesses which fit in one another and guide the packaging material tube into the U-shaped recesses of the flaps without …
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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 23, 1991 and granted October 10, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 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.