Tamper-evident closure and method of manufacture
CA 1265097 C · Owner: Shank, Brian E. · Inventors: Shank, Brian E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of manufacturing a tamper-evident closure having a detachable annular tamper-indicating portion includes a step of testing the connection between the detachable portion and the remainder of the closure. The testing may comprise either use of optical detection apparatus or use of a deflection measuring system which applies radial pressure to the detachable portion. A tamper-evident closure having a detachable annular tamper-indicating portion includes gaging means to cooperate with optical detection apparatus to enable detection of closures having unacceptable tolerances.
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 30, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 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.