Roll having magnetic deflection compensation
AssigneeValmet Corporation
InventorJaakko Riihinen
Life of this patent
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Abstract
A deflection-compensated roll of the type which is adapted to be used in the calender or press section of a paper machine. The roll has an inner non-rotating axle and an outer shell surrounding and rotatable with respect to the axle, this axle and shell having a common axis. The axle includes an inner magnet structure while the shell includes an outer magnet structure which rotates together with the shell. These inner and outer magnet structures cooperate to provide attraction between the shell and axle on one side of the above axis and repulsion between the shell and axle on the opposite side of the above axis, to achieve in this way a deflection-compensation.
Claims14
In a deflection-compensated roll assembly of the type adapted to be used in a calender or press section of a paper machine, inner non-rotating axle means and outer rotary shell means surrounding and rotatable with respect to said axle means, said inner axle means and outer shell means having a common axis and said inner axle means including an inner magnet means while said outer shell means includes an outer magnet means which rotates together with said outer shell means, said inner and outer magnet means cooperating for atracting said shell means and axle means toward each other on one side of said axis and for repelling said shell means and axle means from each other at an opposite side of said axis.
Dependencies are inferred from the claim text.