Collapsible umbrella
CA 2471479 C · Owner: Perreault, Jean-Rene · Inventors: Perreault, Jean-Rene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Collapsible umbrella having a resilient rib tensioning member connected to an end portion of the central shaft and interconnected with a first rib end portion and a second end portion. In response to moving forces against the rib connector it moves from a default position to a first a second and a third open position to a second to a third. In the first open position the rib tensioning member exerts a first threshold holding force on the second rib end portion whereas in the second position, a second threshold holding force holds the second rib end portion which is greater than the first. The rib tensioning member exerts a third threshold holding force on the second rib end portion which 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 June 14, 2004 and granted September 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 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.