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:
Dec. 31, 2002
Filed:
Feb. 14, 2001
Applicant:
Inventors:
Kari Holopainen, Muurame, FI;
Juha Ehrola, Vaajokoshi, FI;
Assignee:
Metso Paper, Inc., Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21F 3/00 ;
U.S. Cl.
CPC ...
D21F 3/00 ;
Abstract
A method for changing the natural frequency of a nip roll construction in a paper or board machine. In the method, the bearing elasticity of a hydrostatic bearing element ( ) of at least one roll ( ) in the nip roll construction is changed, in which connect the natural frequency of the roll ( ) is also changed. The device that carries out the method comprises a pressure medium accumulator ( ), which has been connected to the pressure side of a loading element ( ) of at least one hydrostatic bearing element ( ).