Crushing mechanism
CA 2116243 A1 · Owner: Aldridge, Graham James · Inventors: Gilbertson, Harry James; Aldridge, Graham James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A crushing mechanism (57) contains a number of pairs (78) of co-acting rollers (58), each having a plurality of teeth (83) extending round the circumference (82) of a hub (81) each tooth being, at least at its outermost position in the form of a plate having, a face (84) at an angle to a radius (88) of the hub (81). The rollers (78) are mounted in open cage arrangement on brackets (79) such that a material pathway (77) therethrough is at an angle preferably 45·, to the horizontal.
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 September 4, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 4, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2014.
- 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.