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:
Jul. 30, 2013
Filed:
Feb. 02, 2012
Michael Wokurek, Vienna, AT;
Johan Einarsson, Ulm, DE;
Gamsjäger Norbert, Bad Fischau, AT;
Antje Berendes, Grafenbach, AT;
Alexander Etschmaier, Neuberg, AT;
Franz Grohmann, Payerbach, AT;
Michael Wokurek, Vienna, AT;
Johan Einarsson, Ulm, DE;
Gamsjäger Norbert, Bad Fischau, AT;
Antje Berendes, Grafenbach, AT;
Alexander Etschmaier, Neuberg, AT;
Franz Grohmann, Payerbach, AT;
Voith Patent GmbH, Heidenheim, DE;
Abstract
A combination of a press felt with a pressure and/or suction roll covering for a papermaking machine, including a porous press felt with a carrier structure. The pressure or suction roll covering having a circumferential groove surface structure having a groove width in the range of 0.5 mm to 1.5 mm, a distance between grooves in the range of 1.5 to 2.5 mm and a groove depth in the range of 1.5 mm to 4 mm. A percentage of an open surface relative to an overall surface of the pressure roll covering is in a range of 20% to 50%. The suction roll covering additionally having an arrangement of holes with a plurality of suction holes completely penetrating through the suction roll covering, whereby a percentage of an open surface in relation to an overall surface of the suction roll covering is in a range of 30% to 50%.