Patent · US Expired

Use of microwaves for sensors in the spinning industry

US7103440B2 · kind B2 · utility

4Cited by

29References

53Claims

0Family size

Assignee

Rieter Ingolstadt Spinnereimaschinenbau AG · DE

Inventors

Joachim Dammig · Ingolstadt, DE
Chokri Cherif · Ingolstadt, DE

Key dates

Filing date	Oct 29, 2002
Grant date	Sep 5, 2006
Priority date	—
Expiry date	Apr 6, 2024

Classification

Technology area (CPC G)Physics
CPC primaryG01N33/362
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention uses microwaves in the spinning industry in order to determine the band mass of an elongated, substantially non-twisted fiber structure. In addition, a method for measuring the sliver mass from the frequency detuning and the damping of resonance signals of a microwave sensor while taking into consideration the moisture of the fiber structure with a computer is suggested. Likewise, a corresponding spinning preparation machine and a laboratory device for measuring the sliver mass are part of the invention. Lastly, a method and a spinning preparation machine for recognizing foreign matter in a moved fiber structure with the aid of microwaves is suggested.

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