Closure device for containers
CA 1291722 C · Owner: Spectra King Precision Engineers Limited · Inventors: Taylor, Julian Davidson; Puresevic, Peter James; O'Sullivan, Denis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a closure device for mounting on the screw-threaded cylindrical opening of a container comprising inner, and outer closure members and which have first drive means for turning the device in the clockwise sense to mount the device on the opening and second drive means comprising a hexaganol projection and a hexagonal orifice which are engaged on applying axial pressure on the device and which on applying an anti-, clockwise torque cooperate to unscrew the device from the opening. The orifice may be initially closed or partly so, by a cover, secured to the boundary of the orifice by frangible connectors which are fractured by the projection on initial axial pressure …
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
- Granted November 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2008.
- 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.