One step pull tab cap-lining machine
CA 2015334 C · Owner: Rickenbach, Newton · Inventors: Rickenbach, Newton
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cap-lining machine is disclosed for producing cap liner inserts of the type used to provide a tamper evident seal on the tops of bottles and other containers. To facilitate removal of this seal, it is desirable to have a tab attached to one edge of the seal which can be grasped to pull the seal off the top of the bottle. The liner insert, with an attached tab is formed in one, step by a mating punch and die each having first and second, portions corresponding to the primary portion of the cap insert and the tab, respectively. The structure of the punch and die is such that the tab first is formed and then is folded beneath the main portion of the cap insert in a single operation. The …
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
- Filed April 25, 1990 and granted May 17, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2012.
- 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.