Patent · US Expired

Microwave water weight sensor and process

US7151380B2 · kind B2 · utility

4Cited by

18References

41Claims

0Family size

Assignee

Voith Paper Patent GmbH · DE

Inventors

Pekka M. Typpo · Cupertino, US
Rudolf Munch · Königsbronn, DE
Thomas Ischdonat · Giengen an der Brenz, DE
Oliver Kaufmann · Augsburg, DE

Key dates

Filing date	Aug 6, 2004
Grant date	Dec 19, 2006
Priority date	—
Expiry date	Aug 6, 2024

Classification

Technology area (CPC G)Physics
CPC primaryG01N33/367
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Sensor and process for measuring mass of water on a sheet forming fabric. The sensor includes a microwave element positionable to couple an electromagnetic field into a stock layer to be measured, and a microwave signal generator coupled to the microwave element to generate, in the microwave element, a microwave signal having a frequency lower than a relaxation frequency of water. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.