Lift-off means and method for use with a horizontal continuous hearth roll furnace for the treatment of metallic strip
CA 1187694 A · Owner: Armco, Inc. · Inventors: Compton, Thomas A.; Byrd, Fred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved means and method for the guidance of metallic strip (1) in a horizontal continuous furnace (4) having hearth rolls (14) and wherein the strip temperature and furnace atmosphere are such as to promote the transfer of metal, oxides, dirt and the like from the metallic strip to some at least of the hearth rolls. At least one lifting hearth roll (19,52,53) is provided in an elevated position wherein it lifts the metallic strip from those critical hearth rolls (14) subject to contamination transfer. The elevated position of the lifting roll and its diameter are so chosen to assure a wrap-around contact between the metallic strip and the lifting roll in its elevated position. In practice …
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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 28, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 28, 2002.
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Timeline
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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.