Materials handling equipment
CA 2004609 A1 · Owner: Poulton, Barrie Armstrong · Inventors: Poulton, Barrie Armstrong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed equipment assisting the discharge of particulate materials from intermediate bulk containers of the kind comprising an outer bag having an inner lining comprising frame members to which the upper end of the outer bag of an intermediate bulk container can be anchored, cord means extendable against the action of resilient means and adapted to be connected with the upper end of an inner liner to the outer bag, pulley means for guiding the cord means to the position of connection with the liner a pivotted, arm and means for attaching the free end of the cord means to the arm at a position spaced from its pivot the arrangement being such that the arm can be swung to carry the …
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 December 5, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 5, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 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.