Tear-open can member
CA 1264683 C · Owner: Elpatronic Ag · Inventors: Urech, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A can member is provided with a pair of scorings which define a tear-off strip laterally. A tongue produced as a separate sheet-metal part is welded onto the tear-off strip in a welding zone at one of its ends. Between the welding zone and the free end of the tongue, a starting scoring extends over the tear-off strip to within the vicinity of the two lateral scorings. The starting scoring is part of a field of a plurality of scorings formed on the tear-off strip below the tongue. The welding zone partially covers over this field. As a result care is taken to ensure that a tearing open operation can be reliably initiated by rolling up the tongue, substantially regardless of inaccuracies in …
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 January 23, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2007.
- 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.