Hot water heater controller
CA 1292535 C · Owner: Vandermeyden, Tom R. · Inventors: Vandermeyden, Tom R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system is described for use with a hot water supply for hotels, apartment buildings and similar multi-unit structures, which controls the temperature T1 of water at the outlet of the water tank that circulates past the units and back to the tank, to make the actual temperature T1 close to a desired temperature DTEMP. The desired temperature at the tank outlet DTEMP, is adjusted, according to the measured temperature T3 of recirculating water prior to its reentry into the tank. In cold weather when T3 decreases below a preset limit such as 105°F indicating there is a considerable temperature drop along the pipeline before water reaches the last unit the desired, tank outlet temperature …
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
- Granted November 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 26, 2008.
- 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.