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:
Jan. 20, 1987
Filed:
Dec. 03, 1984
Applicant:
Inventors:
Rolf Griesinger, Goppingen-Faurndau, DE;
Gerhard Fetzer, Sussen, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B / ;
U.S. Cl.
CPC ...
5128 / ; 5113 / ; 5114 / ; 51328 ;
Abstract
A method and apparatus is provided for treating the surfaces of a pair of rollers used in an open-end friction spinning unit containing a pair of friction rollers arranged in an operational position to form a wedge-shaped yarn-forming gap. The pair of friction rollers is treated prior to installation in a spinning unit by rotatably mounting the two friction rollers adjacent one another outside the spinning unit, causing the friction rollers to rotate on their longitudinal axes and simultaneously treating the surface of each friction roller with common treating element.