Patent · US Expired

Yarn tension sensor with improved calibration

US6105895A · kind A · utility

5Cited by

4References

26Claims

0Family size

Assignee

Memminger-IRO GmbH · DE

Inventors

Hermann Schmodde · Dornstetten, DE
Eberhard Leins · Echterdingen, DE
Friedrich Weber · Brensbach, DE

Key dates

Filing date	Mar 15, 1999
Grant date	Aug 22, 2000
Priority date	—
Expiry date	Mar 15, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65H2701/319
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A yarn feeder intended particularly for flatbed knitting machines and elastic yarns has a yarn tension sensor which is provided with a calibration device. This device lifts the yarn from a peg that is part of the yarn tension sensor, at times in which this can be done without impairing operation of the yarn feeder. Such times are preferably time slots when no yarn feeding is necessary. Once the yarn has been lifted from the peg, a zero point calibration is performed. Zero point drifting of the entire sensor system, including its measurement circuit, can be detected and compensated for.

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