Threaded fastener assembly
CA 2497932 C · Owner: Maclean-Fogg Company · Inventors: Wilson, Larry J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The fastener assembly (10) comprises torquing member having threads (20) and a pressure member engaging with the torque member at annular bearing surfaces. The annual bearing surface on the torquing member has a first inclined surface and a second inclined surface. The second inclined surface having a pitch equal to the thread but inclined in an opposite direction.
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 6, 2002 and granted December 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2024.
- 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.