Patent · US Expired

Method and apparatus for applying microwaves to measure the moisture content of material

US6417676B1 · kind B1 · utility

8Cited by

13References

17Claims

0Family size

Assignee

HAUNI MASCHINENBAU GMBH · DE

Inventors

Dierk Schröder · Ahlhorn, DE
Norbert Hohenstein · Glinde, DE
Peter Schreiber · Jena, DE
Andreas Noack · Friedrichstadt, DE
Jorg Tobias · Friedrichstadt, DE

Key dates

Filing date	Nov 23, 1999
Grant date	Jul 9, 2002
Priority date	—
Expiry date	Nov 23, 2019

Classification

Technology area (CPC G)Physics
CPC primaryG01N22/00
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Apparatus for ascertaining the mass and/or the moisture of succesive increments of a running rod containing tobacco and/or filter material for tobacco smoke having a resonator housing with a cylindrical internal chamber which is disposed between and inlet an outlet and wherein the rod is exposed to microwaves. The horsing is made of a metallic material having a low thermal expansion coefficient, and its internal surface is lined with gold or another corrosion resistant substance. A protective plastic tube establishes a path for the rod from the inlet, across the chamber and into the oulet of the resonator housing.

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