Method and apparatus for controlling a pump
CA 2336367 C · Owner: Simmons, Darren W. · Inventors: Bewley, Mark E.; Simmons, Darren W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pump control apparatus includes a pump (13) coupled at an inlet to a water source (14) and at an outlet to a first dispensing valve (18) and a carbonator (15) via a check valve (16). A power source (12) is coupled to the pump (13) and a controller (11) regulates the delivery of power from the power source (12) to the pump (13). Responsive to a fill signal received from the carbonator (15), the controller (11) activates the power source (12) to deliver power to the pump (13) at a first predetermined level. Alternatively the controller (11) activates the power source (12) to deliver power to the pump (13) at a second predetermined power level in response to a dispense signal received …
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 8, 1999 and granted December 31, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 2021.
- 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.