Corner construction for log home
CA 2002665 C · Owner: True North Log Homes Inc. · Inventors: Wrightman, Ronald A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An elongated log is formed substantially rectangular in cross section and is provided with a reduced portion where two logs intersect one with the other at right angles. The reduced portion has a double angled sloping upper surface and a similar sloping lower surface at right angles to said upper surface so that water or moisture sheds easily and towards the outside. When two logs intersect, impaction is not necessary as a sealant is used to seal the joint. This makes manufacture easier and less critical and appearance is improved by the provision of relieved side edges which hide any imperfections of fit when the logs are assembled. Beveled side faces eliminate any end play when the 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
- Filed November 23, 1989 and granted December 31, 1991. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 23, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 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.