Closure cap with braking structure
CA 2304137 A1 · Owner: Crown Cork & Seal Technologies Corporation · Inventors: Seidita, Thomas M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A closure (26) for a container having a threaded finish portion with a , braking structure to resist unscrewing of the closure and thereby provide sufficient time for any gases within the container to vent. The braking structure comprises a restrictor means (44) located adjacent to the leading edge (43) of the closure thread (42) and arranged such that the container thread is squeezed between the restrictor means and the axially adjacent portion of the closure thread. The restrictor means provides braking with a minimum of radial force being exerted on the closure.
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 October 28, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2020.
- 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.