Monocoque pruning, mulching and cutting blade
CA 2209054 A1 · Owner: Powell, Robert A. · Inventors: Powell, Robert A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circular saw-type of blade for forest brush and weed clearing that affixes to powered implements the, blade having serrated teeth at its edge and on three elements projecting from one side of the disk surface. It can cut like a regular saw blade plus mulch horizontally and vertically. The conical cutting elements provide efficient operation in mulching which is not possible with conventional blades. Staggered conical shaped elements results in expelling debris through centrifugal force. A simple design offers efficient manufacturing.
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 July 28, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 2019.
- 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.