Resources Contact Us Home
Roll magnetically compensated and/or controlled of its deflection

Image Number 2 for United States Patent #4485540.

A roller used as a press or calender roller in a paper machine is compensated for deflection and end-loaded. The roller has a stationary axle with spaced opposite ends at which the roller is loaded and a cylindrical shell rotatably mounted on the axle. The axle has a magnetic core portion within the shell having pole shoes spaced from the shell by air gaps and magnetizing coils of electrical conductors thereon at corresponding ones of the pole shoes. The coils produce a magnetomotive force and are positioned in a manner whereby magnetic flux passing through the air gaps between the pole shoes and the shell creates a compensating force field between the shell and the magnetic core. The roller has an inner part of the shell consisting of a stack of sheets of magnetically well-conductive material separated from each other by electrical insulation thereby reducing eddy current losses.

  Recently Added Patents
Registration and network access control
Digital camera dock having movable guide pins
Feature-based autocorrection
Regulating a supply voltage provided to a load circuit
Event handling in an integrated execution environment
Image forming apparatus having exhaust fan
Ejection station
  Randomly Featured Patents
N-heterocyclic alcohol derivatives
Automatic impedance adapter for a H.F. emitter or receiver in a nuclear spin tomography installation and process for operating the device
Spool valve with offset outlet
Electric connector with a cable
Arithmetic and control unit
Method for detecting a target molecule by metal deposition
Internal combustion engine cylinder heads and similar articles of manufacture and methods of manufacturing same
Combined magazine rack and advertising display
Filtering device for fluids, in particular for fuel
Concentration solar power optimization system and method of using same