Corner key door assembly
CA 2444910 C · Owner: Masco Corporation · Inventors: Vilhauer, Kevin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A closure assembly is provided that includes first and second intersecting members such as a rail and stile. The rail and stile are engaged with one another forming a butt joint preferably a corner. Male and female keys are respectively secured to the rail and stile with the keys forming a dovetail interlocking relationship with complimentary tapered surfaces. A fastener is received by the keys to expand the tapered surfaces forcing the rail and stile to be drawn into further engagement with one another at the butt joint. The interlocking tapered surfaces produce a stronger joint and eliminate any gap that might result at the joint as the threaded fastener is installed. The door is …
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 9, 2003 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2025.
- 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.