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. 20, 1994
Filed:
Sep. 30, 1993
Herbert A Leupold, Eatontown, NJ (US);
Ernest Potenziani, II, Ocean, NJ (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
Magnetic circuit losses due to unnecessary magnetic fields are greatly curtailed or eliminated relative to the permanent magnet structures of electric machinery, without employing a conventional shunt or pole pieces. At least one coaxial cylinder of magnetic material is included in each permanent magnet structure of the invention and is magnetized to provide individual magnetic fields between sets of north and south poles on only one cylindrical surface thereof. Each of the cylinders is constructed from a plurality of segments in one preferred embodiment thereof and magnetically rigid materials are utilized to enhance the field magnitudes in another preferred thereof. Segments having a substantially triangular cross sectional configuration are utilized in other preferred embodiments, while flux contributions from at least three segments combine to sustain each set of north and south poles in still other preferred embodiments.