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:
Apr. 29, 2008
Filed:
Jun. 16, 2003
Antti Poikolainen, Jyväskylä, FI;
Jeffrey C. Irwin, Clinton, WI (US);
Michael Odell, Jyväskylä, FI;
Hannu Korhonen, Jyväskylä, FI;
Ari Puurtinen, Jyväskylä, FI;
Sami Anttilainen, Jyväskylä, FI;
Antti Poikolainen, Jyväskylä, FI;
Jeffrey C. Irwin, Clinton, WI (US);
Michael Odell, Jyväskylä, FI;
Hannu Korhonen, Jyväskylä, FI;
Ari Puurtinen, Jyväskylä, FI;
Sami Anttilainen, Jyväskylä, FI;
Metso Paper, Inc., Helsinki, FI;
Abstract
Fibrous stock is supplied by a paper or board machine headbox () between looped forming wires (). Water is removed in a first dewatering zone (Z) formed with a fixed forming shoe () having a curved surface against which a wire () is supported while the opposite wire () is unsupported in the area of the shoe (). Water is removed in a second dewatering zone (Z) formed by fixed dewatering blades () on the other side of the wires () and supported against the stock therebetween () and on the opposite side of the wires () by dewatering blades (), loaded in a controlled manner against the fixed dewatering blades () at gaps () between these so that pulsating dewatering is caused in the second zone (Z). The wires () are guided so the shoe () causes essentially non-pulsating dewatering in the stock.