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:
Jul. 09, 1985
Filed:
Mar. 24, 1980
Johann von der Heide, Monchweiler, DE;
Georg Papst, St. Georgen, DE;
Papst Motoren KG, St. Georgen, DE;
Abstract
An internal flux-conducting member is axially elongated and is manufactured with at least one radially extending electrical discontinuity, to prevent circumferential eddy currents from flowing therewithin in paths which are circular as viewed along its axis. The member may be a single unitary element into which elongated slots are cut, or may be assembled of a plurality of like rods which, when assembled together, have abutting surfaces which form the electrical discontinuities. The rods may be joined together by a nonconductive metal-bonding agent. An external flux-conducting member is disclosed in which at least two like curved frame elements which are made of ferromagnetic material are connected together so as to form a hollow, open-ended frame with an axially elongated and generally cylindrical shape. The frame thus formed contains a plurality of annular magnet rings which are all radially magnetized, with adjacent magnet rings being magnetized in opposite direction. The magnet rings may be formed as individual units or as assemblies of arcuate half-shells. The magnet rings may be bonded to the frame in which they are held fixed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile