The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 2005
Filed:
Jun. 08, 2001
Kari I. Salminen, Ylinen, FI;
Pasi Virtanen, Valkeakoski, FI;
Jukka Sorsa, Tampere, FI;
Metso Paper, Inc., Helsinki, FI;
Abstract
In a paper or board machine, the cross-direction profile of a flow channel defined between a first dewatering element () situated inside a first forming wire loop () and a second dewatering element () situated inside a second forming wire loop () is measured, and the location and/or the position of the blade element () is adjusted based on the measurement result in order to regulate the thickness profile of a stock flow. The measurement can be by passing an alternating current of low frequency to a current rail situated in the second dewatering element () and by measuring the strength of the magnetic field created by it by at least two measuring devices which have been placed either in the first dewatering element () or, when the first dewatering element is a forming roll (), in the same dewatering element (64) as the current rail.