Radiant wall oven and process for generating infrared radiation having a nonuniform emission distribution
CA 2116906 C · Owner: Haden Schweitzer Corporation · Inventors: Best, Willie H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Radiant emitting walls enclose opposite sides of a central combustion chamber in an oven where coated objects to be dried are placed or passed. The radiant emitting walls generate primarily infrared radiation and have a nonuniform temperature distribution so that the temperature of the lower portion of the oven can be selectively adjusted to be significantly higher than the temperature of the upper portion. An insulated outer housing surrounds the radiant walls and defines combustion chambers each having a linear burner which runs substantially the entire length of the radiant emitting walls. The lower portions of the radiant emitting walls receive energy primarily from radiation from the …
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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
- Filed March 3, 1994 and granted April 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 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.