Scoring arrangement for a tamper-indicating plastic closure
CA 1287326 C · Owner: H-C Industries, Inc. · Inventors: Schetzsle, John; Corcoran, Michael E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tamper-indicating plastic closure construction is disclosed which includes an annular pilfer band (22) which depends from an annular skirt portion (16) of the closure. The pilfer band is partially detachably connected to the skirt portion by frangible ribs (32), and remains connected to the skirt portion attendant to removal of the closure from a container. To facilitate such removal the, pilfer band includes a fracturable portion (33) defined by a pair of vertically spaced vertical, scores (36). In order to substantially prevent any propagation of the upper one of the vertical scores (36), another score (39) is formed in intersecting relation thereto. Consistent manufacture and reliable …
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 6, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 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.