Closure cap of plastics material
CA 1264156 C · Owner: Crown Obrist Ag · Inventors: Geisinger, Klaus; Obrist, Albert; Bartl, Franz Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The tear-off guarantee strip (6) of the closure cap (1) has a peripheral detent edge portion (9) whose inside diameter is smaller than the outside diameter of a peripheral projection (8) at the mouth (3) of a container. In addition to the detent edge portion (9), provided on the inside (7) of the guarantee strip are at least one holding projection (10) and a bead (26) which both strengthen the effect of the detent edge portion (9). The combination of the detent edge portion the holding projection, and the bead gives optimum results in regard to function of the guarantee strip and the possibility of removing the moulded closure cap in tools which open in an axial direction.
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 2, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 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.