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:
Nov. 27, 2007
Filed:
Feb. 08, 2002
Applicant:
Reijo Pietikäinen, Järvenpää, FI;
Inventor:
Reijo Pietikäinen, Järvenpää, FI;
Assignee:
Metso Paper, Inc., Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F 1/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for controlling the operation of a paper, board or tissue production line (). A magneto-rheological or an electrolrheological fluid, whose flow characteristics are changed in a controlled way, is used in the method. The fluid is used as a lubricant between surfaces in a device consisting of a fixed surface and a surface that is moved over it as a heating medium, as the dampening or the power transmission agent of the movement of paper and/or board equipment (), or as a hydraulic fluid of the emergency opening cylinders of a set of calender rolls () of a paper and/or board machine.