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:
May. 17, 2011
Filed:
Dec. 20, 2006
Thorulf Pettersson, Täby, SE;
Jan Lif, Hammarö, SE;
Magnus Björklund, Karlstad, SE;
Susanne Lindh, Avesta, SE;
Thorulf Pettersson, Täby, SE;
Jan Lif, Hammarö, SE;
Magnus Björklund, Karlstad, SE;
Susanne Lindh, Avesta, SE;
Stora Enso AB, Falun, SE;
Abstract
A method for monitoring the structural state of a fiber web () that is being processed by a fiber web processing machine comprising a fiber web processing station () is described. The method comprises the steps of arranging a generator () and a detector () of a generator-detector unit () on opposite sides of the traveling fiber web () downstream of the fiber web processing station; bringing the generator to emit an ultrasonic wave; bringing the detector to receive the ultrasonic wave; sending a signal representing the received ultrasonic wave to a control unit (); and, in the control unit, analyzing the signal and extracting a value from the signal representing a measure of the received ultrasonic wave. A system for monitoring the structural state of a fiber web is also described.