Buoyant tank carbonator pump control for post-mix beverage apparatus
CA 2029888 A1 · Owner: Hughes, Robert D. · Inventors: Hughes, Robert D.; Ziesel, Lawrence B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A carbonator unit for a post-mix beverage dispenser having a carbonator tank (10) immersed in a liquid flotation tank (14). The carbonator tank floats up and down with changes in the amount of water and head space in the carbonator tank to actuate a switch device (34) mounted externally of the carbonator tank. Actuation of the switch causes a water pump (28) to become operative to supply uncarbonated water to the carbonator tank. When the volume of carbonated water increases to a predetermined amount the, carbonator tank sinks to deactivate the switch.
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 26, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2012.
- 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.