Off-loading conveying system
CA 2004138 A1 · Owner: Warkentin, Aaron J. · Inventors: Warkentin, Aaron J.; Warkentin, Aaron J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Off-loading conveyors having endless roller chains (10) to which are mounted bow tie rollers (32) on rods (24) extending laterally from the chain. The bow tie rollers define concavities for receipt of product units (36) to be conveyed and off-loaded at an appropriate station. Off-loading elements (42) are mounted to the chains which include paddles (46) extending to between the bow tie rollers. The off-loading elements include levers (50) which cooperate with an actuation system to pivot the paddles through the concavities to remove product at appropriate stations.
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 November 29, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 29, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 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.