Method of cutting segmented-end web
CA 2483759 C · Owner: Griffith, John Edwin · Inventors: Griffith, John Edwin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of cutting an elongate timber web is disclosed which forms on each of two opposed ends thereof a tapered end shape including a series of at least four cuts at successive angles to approximate an arcuate convex end. The method includes the steps of performing first and second passes of the web through a saw having cutter groups at adjustably spaced apart locations each cutter group having at least two cutters (101 102, 103, 104) set to angles so that the cutters of each cutter group correspond to a subset of said series of cuts (201 202, 203, 204) at a respective end of the web. The web is rotated between the passes the rotation between passes and the cutter settings together result …
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 October 4, 2004 and granted March 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2026.
- 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.