Method of examining the surface of a continuously cast metal strip for detection of scarfs appearing thereon and apparatus for the same
CA 1111925 A · Owner: Futec Inc. · Inventors: Mihara, Toshiro; Yamamoto, Tomio; Hanafusa, Hideyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for examining the surface condition of a travelling metal strip in the process of being continuously cast for detection of scarfs. A light emitter projects light beams of short waves or those containing said short waves and other waves on a travelling metal strip in the process of being continuously cast. Among the reflections of the projected light beams only, those consisting of short waves are received by the light detector through a filter. A flat hood surrounding a light path extending between the light emitter and light detector is set in a cooling chamber. Compressed air runs through the flat hood to purge the environments of the light path. A signal issued …
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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 November 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 3, 1998.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.