Tree size adaptable debarking/delimbing apparatus
CA 1291010 C · Owner: Sprague, Larry A. · Inventors: Sprague, Larry A.; Peterson, Arnold N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A debarking/delimbing apparatus having upper and lower flailing drums mounted crossway to a feed line for logs progressing through the apparatus. The upper flailing drum is pivotally mounted to enable movement of the flails toward and away from the feed line to accommodate different sized logs. A counter force urges raising of the upper drum but not sufficient to offset totally the gravity force. A gate across the inlet is connected to the upper drum mounting and when engaged by a log raisers the upper drum in accordance with the diameter of the log. The length of the flails are only as long as needed to reach down to the mid-point of the largest size logs.
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
- Granted October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 2008.
- 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.