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.:

US 9279713 B1

Date of Patent:

Mar. 08, 2016

Filed:

Jun. 14, 2013

Determination of basis weight of a material web using a microwave sensor, whereby the distance between the material web and the surfaces of the microwave sensor is being adjusted to a constant value by air cushions

Applicant:

Voith Patent Gmbh, Heidenheim, DE;

Inventors:

Thomas Ischdonat, Bachhagel, DE;

Ingolf Cedra, Heidenheim, DE;

Oliver Kaufmann, Nattheim, DE;

Assignee:

Voith Patent GmbH, Heidenheim, DE;

Attorney:

Taylor IP, P.C.

Primary Examiner:

Randy W Gibson

Int. Cl.

CPC ...

G01G 17/02 (2006.01); G01N 22/00 (2006.01); G01G 9/00 (2006.01); G01N 33/34 (2006.01);

U.S. Cl.

CPC ...

G01G 17/02 (2013.01); G01G 9/005 (2013.01); G01N 22/00 (2013.01); G01N 33/346 (2013.01);

Abstract

A device for determining the weight per unit area of a moving material web, in particular a fibrous material web includes at least one microwave sensor that has an element for coupling the microwaves and a reference element. The coupling element and the reference element are located at a distance from one another in such a way that the material web can be moved therebetween. At least one microwave sensor element, the coupling element and/or the reference element can be moved such that the distances between the material web and the elements can be adjusted for or during the measurement of the moving material web.

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