Pump dispenser having an improved discharge valve
CA 2435840 A1 · Owner: Nazari, Joseph · Inventors: Nazari, Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A manual pump dispenser which includes a reciprocable pump piston has a discharge valve snap-fitted to the pump body for the outletting of the liquid product, from the pump chamber, the discharge valve being formed of an elastomer material, and comprising a comically-shaped valve element at one end sloping outwardly toward the discharge passage, the valve having a non-reentrant element at its opposite end for snap fit engagement with a transverse support web within the pump, body through a coaxial opening thereof the conically-shaped valve element , seating against a circular valve seat having a complementary taper to that of the naive, element.
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 July 23, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 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.