Abuse resistant, safety-edge, controlled-opening convenience-feature endclosures
CA 1317241 C · Owner: Weirton Steel Corporation · Inventors: Saunders, William T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A convenience-feature full-open end closure structure (27) with a shock-absorbing bead (45) located between a peripheral scoreline (34) which defines the end wall disc (31) to be removed from a recessed end wall panel (49). An arch-shaped back scoreline means with central vent portion (36) and legs (37, 38) is located within the removable disc (31) and co-acts with a longitudinally rigid (nonlanced) opener (30) which is made integral by a rivet (32) formed from sheet metal of disc (31). A multilayer sheet metal fold (40) shields the raw edge of ruptured residual peripheral scoreline metal which remains with disc (31); and a multi-layer sheet metal fold (42) shields residual raw-edge metal …
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 May 4, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 4, 2010.
- 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.