Damper controller for natural draft heater
CA 1192793 A · Owner: Sun, James H. · Inventors: Sun, James H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stack damper controller for receiving operator input of a targetted combustion variable and for adjusting the position of the stack damper according to the target value. The controller may include a control logic module for each barrel of the heater, each module including several control loops. The apparatus for controlling at least one stack damper for maintaining stack oxygen content at an optimal level for minimizing fuel consumption of a plurality of associated heater barrels in view of system conditions comprises at least one fuel feed means for feeding fuel to at least one barrel; monitoring means for providing condition signals representative of a plurality of combustion system …
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 September 3, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 3, 2002.
- 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.