Patents by Inventor Donald E. Merritt

Donald E. Merritt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Permanent magnet assembly
    Patent number: 4769624
    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.
    Type: Grant
    Filed: October 30, 1986
    Date of Patent: September 6, 1988
    Assignee: General Motors Corporation
    Inventors: Donald E. Merritt, Larry J. Eshelman, Chester A. Hammer