Rotary film wrapping apparatus
CA 2017362 C · Owner: Liberty Industries · Inventors: Keip, Charles P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotary stretch wrapping apparatus for wrapping a product in a plastic film includes a base frame a rotary support, structure, a roll of film mounted to the support structure a, film dispensing mechanism, a prestretching device and a conveyor, system for passing the product through the support structure. The conveyor system includes a pair of horizontally adjacent endless conveyors having lugs adapted to prevent the lugs traveling the return path from hindering the product or the plastic wrap.
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 May 23, 1990 and granted March 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 2012.
- 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.