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. 24, 2001
Filed:
Aug. 25, 2000
Applicant:
Inventors:
Mauri Ojala, Tampere, FI;
Hannu Moisio, Kangasala, FI;
Assignee:
Metso Paper Automation Oy, Tampere, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 1/306 ; G01B 2/108 ; D21F 1/100 ;
U.S. Cl.
CPC ...
G01B 1/306 ; G01B 2/108 ; D21F 1/100 ;
Abstract
The invention relates to a method and apparatus for measuring the caliper of paper substantially continuously during papermaking. A sensor (,) is arranged above and/or under the paper (,), the sensor (,) measuring the caliper of the paper (,) at least on one side of the paper (,) mainly without contacting the surface of the paper (,). At given intervals the sensor (,) measuring mainly without contact is brought into momentary contact with the surface of the paper (,).