Quick install and release fastening system
CA 2016312 C · Owner: Buchanan, Jeffrey James · Inventors: Buchanan, Jeffrey James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A push to install, quarter turn to release fastening system includes a fastener having a plurality of radially extending cone-shaped projections spaced along a shank and a pair of diametrically opposed ribs extending along the shank forming smooth surfaces outside the periphery of the cone-shaped projections. The receptacle includes a split cylinder forming a pair of spring latches that are displaced to permit entry and captivation of the fastener. When the fastener is turned 90°, the ribs displace the spring latches to positions out of engagement with the cone-shaped projections to enable removal of the fastener from the receptacle.
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 May 8, 1990 and granted October 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 8, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 8, 2012.
- 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.