Open coil heat shielding
CA 1053900 A · Owner: Lee Wilson Engineering Company · Inventors: Hill, Robert R.; Beemer, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure Apparatus for and process of heat treating open coils of strip metal, such as strip steel, by passing hot gases or atmospheres through spaces between spaced convolutions of the coil in which a shielding structure is provided at the upper end of the coil where the coil edge portions are exposed to radiant heat from the furnace and where they may tend to move and distort from gas velocity or localized thermal expansion. The shielding structure protects these portions of the coil from excessive heat and restricts harmful movement thereof, thus improving the quality of the heat treated product. The disclosed shielding structuro comprises spaced upwardly extending …
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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 8, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 8, 1996.
- 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.