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. 26, 2006
Filed:
May. 19, 2005
Heinz-georg Wassenhoven, Mönchengladbach, DE;
Norbert Coenen, Mönchengladbach, DE;
Heinz-Georg Wassenhoven, Mönchengladbach, DE;
Norbert Coenen, Mönchengladbach, DE;
Saurer GmbH & Co. KG, Monchengladbach, DE;
Abstract
An open-end spinning unit, which comprises a spinning rotorthat rotates during the spinning operation at a high rotational speed in a closed rotor housingThe spinning rotor is rotated by an individual electric motor driveand supported in a smoothly running bearing assembly. When the drive is disconnected and the rotor housing is properly closed by a cover elementthe spinning rotor is biased and rotated by an airflow resulting from a vacuum prevailing in the rotor housing and the motor drive operates as a generator. At least one of the electric quantities P, Gwhich develop during the generator operation of the driveis monitored, and upon exceeding a threshold value which can only be attained when the cover element is properly closed, a signal S is generated and processed in a control unitto cause the cover elementon the rotor housingto be locked, and thereafter the driveis connected to its electrical supply to rotate the rotor at high speed.