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:
Mar. 30, 1982
Filed:
Mar. 03, 1980
Glen Ray, Big Bend, WI (US);
James B Gollhardt, Shawnee, OK (US);
Allen-Bradley Company, Milwaukee, WI (US);
Abstract
An armature for electric motors having a magnetic core of stacked laminations mounted on a shaft with a plurality of electrically conductive rotor bars disposed in the magnetic core, and also having a number of arch shaped permanent magnets disposed in the core that are circularly spaced from one another and arranged concentrically with the shaft. Each permanent magnet has a pole of one magnetic polarity on its radially outer face and a pole of opposite polarity on its radially inner face, and is surrounded by magnetic core material at its circumferential ends and radially inner side to form flux return paths, whereby there are two magnetic armature poles for each permanent magnet.