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:
Jun. 10, 2003
Filed:
Sep. 14, 2001
Arto Leskinen, Nukari, FI;
Metso Paper, Inc., Helsinki, FI;
Abstract
A web roll is wound ( ) by passing the web onto a core ( ) via a pressure nip (N) formed between a winding drum ( ) and the roll ( ), whereby the core ( ) is supported by chucks ( ) mounted on roll support arms ( ). The pressing-nip force in the nip (N) formed between the roll ( ) and the winding drum ( ) is controlled using a position-feedback technique in which the movements of the roll support arms ( ) are synchronized. Moreover, the support arms are moved is response to a control unit which uses a physical model of the winding process which predicts roll diameter at any time. When force sensors which detect an increase in pressure the arms can be advanced to promote even winding of the roll.