Method and apparatus for the picking up and handling of sheets of material in particular sheets of porous and flexible material
CA 2000825 C · Owner: Hartta, Matti · Inventors: Hartta, Matti
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for picking up sheets of paper, cardboard or similar, especially porous material one at a time from a pile of sheets for onward transfer using a gripping apparatus fitted with gripping means and a sheet support disk, and a gripping apparatus for effecting the method. According to the invention when the gripping apparatus is brought to the pile of sheets it achieves the following steps:, a. the pile of sheets is pressed on its top in the central region thereof, b. the gripping means is moved and presses the top of the pile on both sides of said central region c. the top sheet on the pile is distorted preferably from both sides of the central region of the …
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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 October 17, 1989 and granted April 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 17, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 2011.
- 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.