Method and apparatus for automatically lining a container
CA 2257708 C · Owner: Krueger, Friedrich · Inventors: Krueger, Friedrich; Johnson, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides for a method and apparatus for automatically lining a container having at least one open end. A bag-type liner having a leading, sealed, and a trailing unsealed end is fed along a predetermined liner path with the, trailing unsealed end suspended above the container. A plurality of clamps grab the, sides of the bag at the unsealed end and separate the unsealed end by pulling the sides, apart. A vacuum is then activated to draw air out of the container through the bottom, of the container, drawing the wall of the liner material against the interior surface of, the container, thereby fully opening the liner in the container. If the container has two, …
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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 December 31, 1998 and granted July 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 31, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 31, 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.