Tree shearing device
CA 1054491 A · Owner: Coatta, Joseph · Inventors: Coatta, Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to an improved shearing device to be mounted on a tree harvesting vehicle having a pair of blade edges which move through inward downward directed arcs in shearing the tree. This movement provides the advantage of reducing cracking or splitting of the butt end of the cut log and additionally shatters the stump below the cut which exposes more of it to more rapid breakdown by the elements following cutting. In one embodiment, the frame of the tree shearing device mounted on the end of a boom mechanism on the vehicle has a U-shaped horizontal portion with spaced apart arms which define a front opening to receive the tree trunk therethrough. A pair of blade members, one …
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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
- Granted May 15, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 1996.
- 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.