Pressure regulating valve
CA 2419968 A1 · Owner: Van Houten, David · Inventors: Van Houten, David; Duggan, Gerard; Lombari, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pressure maintenance assembly for a domestic water well system. The assembly comprises a pressure maintenance valve having an inlet side and an outlet side, a pressure tank in fluidic communication with the outlet side and a , calibrated bypass. When the valve is closed the calibrated bypass provides , fluidic communication between the inlet side and the outlet side. The size of the calibrated bypass and the pressure tank are adapted and constructed to permit a flow rate between the inlet side and the outlet side that will fill the pressure tank in an time interval less than twice the time required to pump a volume of water that will dissipate heat generated by the pump when it is …
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 August 17, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 17, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2023.
- 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.