Roller magnetically compensated and adjusted for deflection
AssigneeValmet Corporation
InventorJaakko Riihinen
Life of this patent
Estimating the term…
Abstract
A roller, magnetically compensated and adjusted for deflection, has a non-rotating axle with ends having a load imposed thereat and a cylindrical shell rotatably supported by bearings on the axle. A magnetic core is formed in the axle and has in transverse section a plurality of pole shoes spaced from the shell by an air gap. A plurality of electromagnetic windings, each wound on the core at a corresponding one of the pole shoes, produce a magnetic force in a manner whereby the magnetic flux through the air gap between the pole shoes and the shell produces a compensating force field between the shell and the core.
Claims10
A roller magnetically compensated and adjusted for deflection, said roller having a non-rotating axle with ends having a load imposed thereat and a cylindrical shell rotatably supported by bearings on the axle, said roller comprising
- a magnetic core formed in said axle and having in transverse section a plurality of pole shoes spaced from said shell by an air gap, at least a part of said shell being made of magnetically conductive material;
- and
- a plurality of electromagnetic windings each wound on said core at a corresponding one of said pole shoes for producing a magnetomotive force in a manner whereby the magnetic flux through the air gap between the pole shoes and the shell produces a compensating force field between said shell and said core.
Dependencies are inferred from the claim text.