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:
Jun. 10, 1997
Filed:
Dec. 07, 1994
Anton Paweletz, Fellbach, DE;
SKF Textilmaschinen-Komponenten GmbH, Stuttgart, DE;
Abstract
A shaftless spinning rotor for an open-end spinning machine is adapted to operate as a rotor driven by a stator in an axial field motor supported thereon by a combined magnetic and gas bearing producing separate magnetic fields for guiding orientation of the rotational axis of the rotor and for driving rotation thereof which achieves smooth substantially non-oscillating operation with minimal heating in the region of the axis of rotation by interposing a barrier layer with nonmagnetic properties between respective means for conducting the magnetic flux of the driving and guiding magnetic fields for decoupling the magnetic fields. In particular, separate yokes are utilized for conducting the fluxes of the driving and guiding magnetic fields and permanent magnets are primarily used to generate the magnetic fields.