Method and apparatus for controlling temperature of a liquid
CA 1253935 A · Owner: Naiad Company Usa, A Limited Partnership · Inventors: Sperling, Jac K.; Sable, Arthur J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A temperature controlling method and apparatus are provided using digital control and information stored in memory. The apparatus includes a number of on/off valves. A first set of valves is used to receive cold water and a second set of valves is used to receive hot water. The opening and closing of the valves is controlled by an electronic controller. Each of the valves is able to receive water from one of a plurality of orifices. In the preferred arrangement a first set of orifices supplies cold water to the first set of valves and a second set of orifice supplies hot water to the second set of valves. The orifices of the second set are greater in size than are the corresponding orifices …
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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 May 9, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 9, 2006.
- 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.