Materials grinder
CA 2080926 A1 · Owner: Page, James H. · Inventors: Page, James H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A material grinder has a materials receiving hopper, an exit opening into a shrouded grinding chamber and a powered ram for driving materials accumulated in the hopper to and through the exit into the grinding chamber. A grinding drum is rotatably disposed inside of a shroud adjacent the exit of the hopper to grind the ends of materials to be ground as they enter the grinding chamber and to continue to grinding as the materials are carried downwardly toward the bottom rear of the grinding chamber. The bottom of the shroud is open to receive an adjustable transverse shear bar assembly that is pivotally mounted to provide adjustment of the upper edges of the transverse shear bars with respect …
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 October 15, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 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.