Patent · US Expired

Yarn withdrawal apparatus and method

US4784344A · kind A · utility

7Cited by

11References

36Claims

0Family size

Assignee

Barmag AG · DE

Inventors

Erich Lenk · Remscheid, DE
Albert Stitz · Lingen (Ems), DE

Key dates

Filing date	Jan 29, 1987
Grant date	Nov 15, 1988
Priority date	—
Expiry date	Jan 29, 2007

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65H2701/31
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Advancing yarn is directed onto a larger diameter portion of a tapered yarn winding roll having a smaller diameter free end. The yarn is formed into windings that extend about the roll and that are continuously displaced along its length toward and, in most embodiments also from, its free end. The displacement of the yarn windings may be assisted by air currents and/or the force of gravity. The tension of the advancing yarn may be controlled by varying the axial location of its initial engagement with the roll. The apparatus may consist either of a single yarn withdrawal unit or of multiple interconnected units.

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