Patent · US Expired

Combined carpet yarns by open end rotor spinning

US4729214A · kind A · utility

6Cited by

8References

13Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Paul W. Yngve · Wilmington, US
Peter Artzt · Reutlingen, DE
Gerhard Egbers · Reutlingen, DE
Ullrich Stark · Stuttgart, DE
Heinz Muller · Waiblingen, DE

Key dates

Filing date	Jan 20, 1987
Grant date	Mar 8, 1988
Priority date	—
Expiry date	Jan 20, 2007

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD02G3/445
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A method of manufacturing a combined yarn which includes feeding staple fibers to the collection groove of an open-end spinning rotor, twisting the staple fibers into a staple fiber yarn, combining the staple fiber yarn with a continuous filament yarn which is also fed into the spinning rotor and then twisting the continuous filament yarn and the staple fiber yarn together to form a balanced ply yarn.

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