Self-aligning cutter head assembly for delimbing trees
CA 1304656 C · Owner: Hamby, Thomas E. Jr. · Inventors: Hamby, Thomas E. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present cutter head assembly includes guide lever members engageable with the trunk of the tree so that the curved cutting and limb stripping blades are maintained parallel with the longitudinal axis of the tree as the tree is pulled through the cutter head assembly by the grapple of a knuckle boom loader or the like. The cutter head assembly includes a rectangular support frame with a pair of curved cutting and limb stripping blades pivotally supported for movement toward and away from each other and adjacent one end of the rectangular support frame. The stripping blades define a tree encircling cutting opening therebetween for longitudinal movement of the tree in one direction through …
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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 July 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 2009.
- 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.