Pumping station in a water flow system
CA 2105562 A1 · Owner: Dion, Thomas R. · Inventors: Dion, Thomas R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water flow system for collecting and discharging waste water storm water and the like includes a water pumping station into which water is delivered through an inflow main (16) and from which water is pumped through a water discharge main (18). The pumping station has a water collection well, a pair of water pumps (20 22) and a conduit arrangement by which the suction side of each pump is communicated with the well and the pressure side of each pump is communicated with the discharge main. A secondary conduit (48) also communicates the pressure side of one pump with the suction side of the other pump. A control system (38) is operative to actuate one of the pumps for normal pumping …
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 March 5, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2014.
- 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.