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. 19, 2002
Filed:
Dec. 29, 2000
Applicant:
Inventors:
Pekka Koivukunnas, Järvenp{umlaut over (aa)}, FI;
Timo Torvi, Järvenp{umlaut over (aa)}, FI;
Assignee:
Metso Paper Automation Oy, Tampere, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01L 5/04 ;
U.S. Cl.
CPC ...
G01L 5/04 ;
Abstract
The invention relates to a method and apparatus for measuring the tension of a moving web. In the invention, a measuring beam ( )is curved so that a web moving over or under the measuring beam ( ) forms an air cushion ( ) of the air it transports between the measuring beam ( ) and the web ( ). The web ( ) causes a force effect transmitted by the air cushion on the measuring beam ( ). The tension of the web ( ) is measured by measuring the force caused by the web ( ) and transmitted by the measuring beam ( ).