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:
Mar. 30, 2010
Filed:
Jan. 04, 2007
Applicants:
Jörg Bauböck, Graz, AT;
Paul Arnold, Liverdun, FR;
Inventors:
Jörg Bauböck, Graz, AT;
Paul Arnold, Liverdun, FR;
Assignee:
Andritz AG, Graz, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F 1/48 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process and a device for dewatering a fiber web, especially a paper web, using vacuum. The vacuum seen by a given unit are of the web is pulsed between a maximum value V and a minimum value. At least one suction boxis provided with perforations beneath the running web where the vacuum is applied with a pulsating effect on the web.