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:
Mar. 09, 1993
Filed:
Apr. 16, 1991
Applicant:
Inventors:
Anthony A Ball, Reichertshausen, DE;
Ulrich Rodiger, Ingolstadt, DE;
Assignee:
Schubert & Salzer Maschinenfabrik AG, Ingolstadt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D01H / ;
U.S. Cl.
CPC ...
57263 ;
Abstract
A yarn piecing device and process for an open-end spinning machine wherein opened fiber is fed to a fiber collection surface in a pneumatic stream. The stream of fibers is shifted from the fiber collection surface when a broken or missing yarn is detected and the fiber feed to an opening device is interrupted. After the yarn is back-fed to the collection surface, the fiber feed to the opening device is restarted and the pneumatic stream of fibers is shifted back to the fiber collection surface before the fiber density in the pneumatic stream attains its production strength density.