Automatic edger saw
CA 2004279 C · Owner: Mcfarlane, Arthur M. G. · Inventors: Mcfarlane, Stuart R.; Mcfarlane, Arthur M. G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A controller for a head rig edger saw for sawing the edges of a board that is cut from a log by a head saw includes a detector for determining the surface contour of the log to be sawed, along a line displaced from the face of the log; a computer device for selecting an edger saw line through the log from the surface contour to produce a board satisfying predetermined criteria; and an edger saw controller connected to the computing device for providing control signals to the edger for causing the saw to cut the board along the selected line.
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 November 30, 1989 and granted April 2, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 30, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2011.
- 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.