Sensing and controlling resistance noise component in electrolytic reduction cell
CA 1050474 A · Owner: National-Southwire Aluminum Company · Inventors: Murphy, Joseph A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This disclosure concerns the production of metal in, particular aluminum, by providing an electrolytic bath containing dissolved oxide of the metal to be produced in a reduction cell. A direct current flows through the bath and metal is collected on the bottom of the reduction cell. The invention includes a method and apparatus for determining the undesirable process generated noise component of the resistance in the reduction cell and preferably, reducing or eliminating the noise component whenever it exceeds a given level. More particularly, a circuit arrangement is operatively arranged to sense the process generated noise component and produce an output signal whenever this component …
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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 March 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 1996.
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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.