Patent · US Expired

Process and device for the piecing of a yarn in an open-end spinning device

US7082746B2 · kind B2 · utility

4Cited by

9References

24Claims

0Family size

Assignee

Rieter Ingolstadt Spinnereimaschinenbau AG · DE

Inventors

Sebastian Brandl · Böhmfeld, DE
Frank Baier · Geisenfeld, DE
Marc Schnell · Rehau, DE

Key dates

Filing date	Jun 17, 2004
Grant date	Aug 1, 2006
Priority date	—
Expiry date	Jul 31, 2024

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01H13/32
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

For the piecing of a yarn in an spinning device, various computation formulas are stored in a control device into which calculated values as well as special data converted into numerical values relating in particular to the fiber material, the yarn and the spinning element are first entered to compute and select settings for operations relevant to the piecing process. A feeding device feeding a fiber sliver to the spinning device is first brought to a high pre-feeding speed by means of such pre-programmed values and converted data. From this pre-feeding speed, the feeding speed is greatly decelerated in steps to its piecing feeding speed in coordination with the release of the yarn to be fed back into the spinning element.

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