Furnace control
CA 1097766 A · Owner: Shell Canada Limited · Inventors: Oostervink, Jaap; Bos, Johan F.; Van Der Heijden, Adriaan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the control of a furnace having at least two parallel coils over which the flow of matter to be heated and/or evaporated is distributed characterized, in that, a) the temperature Ti of the matter is measured at the end of each coil and the average value is, computed, b) each difference T - Ti is used to produce a signal by which the flow of matter through the bundle concerned is adjusted so as to cause the said difference T - Ti to decrease, c) of the temperatures Ti the highest Timax is chosen and the difference Timax - Ts, (where Ts is a set value related to the temperature To of the combined flow of matter leaving the furnace) is used to produce a signal by which the heat …
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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 March 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 1998.
- 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.