Board repair for correcting defects in lumber
CA 2001289 C · Owner: Cortese, Thomas · Inventors: Cortese, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Boards of lumber or the like which exhibit defects such as knots or knotholes are repaired by cutting a bore through the board at the site of the defect and by filling the bore with a plug of conforming shape. The width of the bore changes at a first location along its axis and undergoes a reverse change at another location in order to interlock the plug with the board. The plug may be formed by filling the bore with hardenable mastic or by fitting conforming pieces of wood or the like into opposite ends of the bore, the pieces being abutted and secured together by adhesive. The interlocking configuration of the bore and plug assures that the plug cannot be ejected from the board.
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 24, 1989 and granted February 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 24, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 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.