Multi-faceted end for roof truss web
CA 2483166 C · Owner: Turb-O-Web International Pty Limited · Inventors: Griffith, John Edwin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention discloses a segmented end shape for an elongate parallel-sided wooden web 10 for a roof truss suitable for use in the Turb-O-Web method of roof truss construction. The web end is shaped as series of three or more substantially straight facets 26 28 to approximate a notional part circle preferably a semicircle 16 having an endpoint coinciding with an endmost point of said web. The end shape comprises an irregular part polygon having an end point coinciding with said endpoint of the notional part circle and wherein junctions between one or more adjacent facets of said polygon lie outside the notional part circle and a part of one or more facets lie inside the notional part …
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 September 28, 2004 and granted March 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 28, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 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.