Molded flange for drums or other containers
CA 1107667 A · Owner: Rieke Corporation · Inventors: Fee, Max J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flange for a container opening has an internally threaded aperture to receive a plug, and a plurality of external serrations in a circularly spaced-apart relationship around the periphery of the upper portion of the flange. The plug is externally threaded and when mated with the flange, closes the aperture. Both the flange and the plug are molded out of plastic materials as single integral components. On the lower portion of the flange is an annular lip which is positioned beneath and extends radially beyond the external serrations. A container suitable for the flange has a boss around the container opening in a wall (usually the end wall) of the container. The boss is formed with …
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 August 25, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 1998.
- 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.