Flexible holder for "living" hinge joining lid to closure body of dispensing closure
CA 2129640 C · Owner: Polytop Corporation · Inventors: Wilson, Steven B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plastic dispensing closure including a closure body (102) a, lid, a resilient ''living'' hinge (106) joining the lid to the closure body, and camming members (118 114) defined between the lid , and the closure body to temporarily deform the hinge within its , elastic limits, as the lid is moved between its opened and closed position. One end of the hinge (106) is secured to a flexible holder (120) situated at the rear of the closure. Such holder (120) functions as a cantilever beam and serves as a spring to minimize the stress forces imposed upon the ''living'' hinge. The closure body, lid, and hinge may be integrally molded and the holder, (120) may be situated upon the closure body …
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 February 5, 1993 and granted February 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 5, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 5, 2015.
- 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.