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:
Aug. 17, 1993
Filed:
Apr. 22, 1992
Raymond Kauppila, Marquette, MI (US);
Gregory Nowak, Girard, PA (US);
Eriez Manufacturing Company, Erie, PA (US);
Abstract
A magnetic rotor for use with an eddy current separator. The rotor has a plurality of permanent magnets bonded to a polygonal outer periphery and undercuts are formed in the flat surfaces to relieve stresses due to differences in thermal co-efficient of expansion of the permanent magnets and the rotor structure. A carbon filament is wrapped around the permanent magnets under tension overcome the centrifugal force due to rotation of the rotor. The rotor is supported on a bearing sleeve that surrounds the rotor shaft with rotor bearings which support the rotor on the sleeve and the sleeve extends inwardly over the rotor shaft and the shell has shell bearings supported on the sleeve extension. Therefore, the sleeve supports the rotor independent of the shell so that the bearing of the shell and the bearing supporting the rotor are each independent of one another. The sleeve is supported on pillow blocks. The ends of the rotor are clamped to the rotor shaft by means of a locking assembly arrangement. The shell has a heat shield made of ceramic tiles which are fixed to the outside of the shell. The tiles are held to the shell by a suitable netting of non-magnetic material.