Inductor with a contained configuration for eddy current heating in a papermaking machine press
CA 1255758 A · Owner: Mitsubishi Heavy Industries, Ltd. · Inventors: Pulkowski, Jeffrey H.; Siler, Steven J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Inductors for heating rolls especially of the type used in rolling mills for sheet materials such as paper textiles, plastics and the like, are configured to enhance and concentrate eddy currents in areas along the length of the roll to selectively heat the roll as desired and control moisture and caliper properties of the sheet. The inductors have cores with a center leg around which the exciting coil is wound and an outer leg surrounding the coil and connected at one end to the inner leg. These inductors or electromagnets are mounted immediately adjacent a roll of magnetic flux conducting material such as, iron or steel, to heat the roll surface as desired across the length of the roll as …
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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 June 13, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 13, 2006.
- 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.