Patent · US Expired

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

US7199592B2 · kind B2 · utility

0Cited by

23References

1Claims

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	Jun 5, 2002
Grant date	Apr 3, 2007
Priority date	—
Expiry date	Sep 12, 2022

Classification

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

Abstract

Apparatus for ascertaining the mass and/or the moisture content of successive increments of a running rod containing tobacco and/or filter material for tobacco smoke has a resonator housing with a cylindrical internal chamber which is disposed between an inlet and an outlet and wherein the rod is exposed to microwaves. The housing 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 outlet of the resonator housing.

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