Textiles: spinning – twisting – and twining – Apparatus and processes – Twist setting
Reexamination Certificate
2006-01-31
2006-01-31
Calvert, John J. (Department: 3765)
Textiles: spinning, twisting, and twining
Apparatus and processes
Twist setting
C057S264000
Reexamination Certificate
active
06990795
ABSTRACT:
A texturing machine for draw texturing a plurality of synthetic multi-filament yarns and which includes a plurality of side by side processing stations. Each of the processing stations comprises a plurality of processing units for advancing, texturing, drawing, and winding the yarn. At least one of the processing units is driven by an electrical individual drive, with the individual drives of the processing units of adjacent processing stations being controlled by a common group frequency changer. To enable a separate connection and disconnection of the individual drives with a simultaneous group control, the electrical individual drive of each processing unit includes an asynchronous unit and a synchronous unit. In the case of a predetermined desired frequency, this permits an automatic startup and maintenance of the desired frequency, which leads to a high degree of uniformity of the yarn treatment in each processing station.
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Natur-wissenschaft und Technik, VEB F.A. Brockhaus Verlag Leipzig, 1980, outside and inside cover pages and p. 268.
Lieber Reinhard
Springmeier Frank
Wortmann Thomas
Alston & Bird LLP
Calvert John J.
Hurley Shaun R.
Saurer GmbH & Co. KG
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