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:
Jun. 05, 2007
Filed:
Nov. 24, 2004
Michael Schröter, Remscheid, DE;
Michael Schröter, Remscheid, DE;
Saurer GmbH & Co. KG, Monchengladbach, DE;
Abstract
An apparatus for guiding, treating, or advancing at least one yarn (), comprising a delivery roll () and a companion roll () cooperating with the delivery roll so that the yarn repeatedly loops the delivery roll () and the companion roll (). The delivery roll and the companion roll are driven by associated electric motors (), which are controlled via control lines () at a desired frequency by a controller (). To enable an equalization of the circumferential speeds of the delivery roll () and the companion roll (), the electric motor of the companion roll is an asynchronous motor that is controlled by the desired frequency and has a motor slip.