Method for the operation of an oil evaporation burner and an oil evaporation burner for carrying out the method
CA 2119727 C · Owner: Viessman Werke Gmbh & Co. · Inventors: Hofbauer, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is concerned with a method of operating an oil evaporation burner for heating boilers which, for NOX reduction, are operated with an exhaust gas return from the combustion chamber of the heating boiler into the burner. In oil evaporation burners of the afore-described type the exhaust gas return during the start-up phase presents certain difficulties inasuch as the burner frequently goes off during the start-up phase. To overcome such difficulties the flow of exhaust gas as returned during the start-up phase is pneumatically discontinued by the formation of blocking curtains from air as supplied.
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 22, 1994 and granted March 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 2016.
- 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.