Self-sealing dispensing valve for humidifier water bottles
CA 2418604 A1 · Owner: Emerson Electric Co. · Inventors: Rhea, Steven L.; Tomasiak, Mark J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Various configurations of discharge valves for humidifier water containers are disclosed herein. Among other things, the present invention provides simple and, economical discharge valves that may be constructed in one piece using an elastic material, such as silicone rubber. One configuration includes a valve body and stopper with an, elastic rib integrally formed with the valve body and the stopper having adequate length to, maintain the stopper in a closed position absent external forces. Another configuration, uses a flexible barrier is integrally formed with a valve body. The barrier has a slit through, its thickness, and is sufficiently resilient to prevent liquid flow through …
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 7, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2025.
- 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.