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:
Aug. 15, 2000
Filed:
Mar. 22, 1999
Applicant:
Inventors:
Gerd Stahlecker, Eislingen/Fils, DE;
Hans Braxmeier, Suessen, DE;
Assignee:
Novibra GmbH, Suessen, DE;
Primary Examiner:
Int. Cl.
CPC ...
D01H / ;
U.S. Cl.
CPC ...
57263 ; 57264 ; 57408 ; 57411 ; 57412 ;
Abstract
For piecing a yarn end at a spinning station of an open-end rotor spinning machine, the previously stopped feed roller is re-activated for a short pre-feeding period. The fiber beard, which has been thinned out by the still rotating open roller, can thus renew itself. The fibers which are combed during this pre-feeding period are removed as waste when the spinning rotor is at a standstill. After completion of the pre-feeding period, the feed roller is rotated in reverse so far back until the fiber beard leaves the area of effect of the opening roller. The feed roller is activated again for the actual piecing process.