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:
Apr. 23, 1996
Filed:
Mar. 21, 1994
Applicant:
Inventors:
Heinz-Georg Wassenhoven, Moenchengladbach, DE;
Manfred Lassmann, Nettetal, DE;
Assignee:
W. Schlafhorst AG & Co., Moenchengladbach, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01H / ; D01H / ;
U.S. Cl.
CPC ...
57263 ; 57 92 ; 57 93 ; 57100 ; 57264 ; 57408 ; 57412 ;
Abstract
A rotor spinning machine has a plurality of simultaneously operated spinning stations each with a spinning rotor, an opening roller, a feed roller for delivering sliver to the opening roller, and a stepping motor connect directly to the feed roller for driving thereof. An actuating arrangement is provided for selectively actuating each stepping motor in a normal increment mode during spinning operation and in a microincrement mode during yarn piecing operations.