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:
Sep. 19, 1989
Filed:
Jul. 14, 1988
Applicant:
Inventors:
Gerhard Fetzer, Sussen, DE;
Siegfried Kalitzki, Wurselen-Bardenberg, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01H / ; D01H / ; B32B / ;
U.S. Cl.
CPC ...
57414 ; 57416 ; 427234 ; 427240 ;
Abstract
A process is provided for producing an open-end spinning rotor assembly. A boron treatment material is applied only to the fiber collecting groove area of the rotor of the spinning rotor assembly. Subsequently, a spinning enhancement material is applied over the boron treated fiber collecting groove and over a sliding wall area of the rotor. An assembly treated with boron treatment material and spinning enhancement material is also provided.