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. 06, 1988
Filed:
Oct. 30, 1986
Donald E Merritt, Anderson, IN (US);
Larry J Eshelman, Pendleton, IN (US);
Chester A Hammer, Shirley, IN (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A permanent magnet assembly wherein a permanent magnet is encapsulated in a metallic housing that hermetically seals the permanent magnet. The metallic housing is formed from two stainless steel parts that are joined by a continuous impervious seam weld. The stainless steel parts take the form of a retainer having a cup portion and a plate welded to a flanged portion of the retainer. The permanent magnet is disposed within the cup portion. The permanent magnet assemblies can be welded to the internal surface of a metallic frame of a dynamoelectric machine to provide field and frame assembly for the machine.