Safety coupler
CA 2377981 A1 · Owner: Friend, Roxane · Inventors: Friend, James R.; Friend, Roxane
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A safety coupler includes a ring member a hook member, and, an annular member. The hook member includes a rod portion and a hook with the rod portion including a pin and a pair of stops. The pin extends through first and second transverse openings provided in the ring member and the annular member, respectively, and rotatably couples the second member to the first member about an axis. The stops axially restrain the pin from passing through the second transverse opening. The annular member axially restrains the pin in the opening of the ring member. The pin is releasably coupled to the first member in the transverse opening such that when a force having a selected magnitude is applied to …
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 March 21, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 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.