Automatic down-stacking technology
CA 2490005 A1 · Owner: Graphic Packaging International, Inc. · Inventors: Lindquist, David Allen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stacked articles accumulating apparatus (10) functions by down-stacking. The apparatus includes a surface (20) supported on an air cylinder member (25) with a solenoid valve (40) controlled by a photo eye sensor (35) to release air from the cylinder member (25) to maintain the top article of an accumulating articles stack (S) on the support surface (20) substantially at a predetermined elevation. Additional components include a limit switch (50) for setting a minimum elevation of the support surface (20) a compressed air , source (60) supplying the air cylinder member (25) and an article supply , mechanism (120). A method of article accumulation at substantially a predetermined …
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 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2025.
- 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.