Pressure operable liquid pumping system
CA 2420624 A1 · Owner: Drummond, David Carl · Inventors: Drummond, David Carl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pressure operable liquid pumping system for pumping liquid from a container comprises a liquid intake hose having a liquid inlet end insertable into liquid in the container a fitting, for engaging the aperture of the container in sealed relation and, a liquid transport hose having a liquid outlet end. A pump is used to pump air into the container. The pump is also connected in sealed air-delivery relation to the container at the aperture thereby permitting delivery of air from the pump into the container through the aperture, so as to thereby effect a positive air pressure in the container, thus causing the liquid to flow from the container, through the liquid intake hose the fitting, and …
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 January 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 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.