Container closure
CA 2174643 A1 · Owner: Rickuss, Ian David · Inventors: Rickuss, Ian David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A child's drinking cup (10) has a releasable lid (14) providing a mouthpiece (16). Sucking on the latter causes air to be drawn from the valve members (27) through a channel (18), whereby to open the valves and allow liquid from the container (12) to be sucked into a space (26) and therefrom through the open mouths (24) out of the mouthpiece (16). On release of the sucking action the, valve members (27) automatically close thereby providing, a reliable seal to the cup when not in use.
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 19, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2016.
- 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.