The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 2005
Filed:
Nov. 21, 2003
Thomas Weide, Mönchengladbach, DE;
Lothar Winzen, Erkelenz, DE;
Thomas Weide, Mönchengladbach, DE;
Lothar Winzen, Erkelenz, DE;
Saurer GmbH & Co. KG, Monchengladbach, DE;
Abstract
An open-end spinning device has a spinning rotor () with a rotor groove () at its greatest inside diameter in which fibers are collected. A yarn shank () extending from a yarn withdrawal nozzle to the rotor groove () is curved in the vicinity of the rotor groove () counter to the direction of rotor rotation during the spinning process forming a lagging tie-up zone whereat yarn formation takes place. A rotor insert () is rotatably supported within the spinning rotor coaxially to the rotor axis. The rotor insert () can be caused to rotate in a contactless manner by the rotation of the spinning rotor. The rotor insert () comprises a yarn guide conduit () that receives the yarn shank () to effect a retardation of the rotor insert () during normal spinning operation, which significantly improves the stability of the spinning process over known open-end spinning devices.