Patents by Inventor Donald J. McJury

Donald J. McJury 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).

  • Bar magnet for construction of a magnetic roller core
    Patent number: 5019796
    Abstract: An improved bar magnet and method of construction, and an improved magnetic core comprising an assembly of such magnets, for use in a processing station of an electrostatographic printing machine. The improved bar magnet is formed of permanent magnet material having magnetic domains therein that are magnetized along epicycloidal curve segments. The external magnetic flux density is improved over that of a conventionally-magnetized magnet. An injection mold for inducing the particular epicycloidal alignment of magnetic domains in the improved bar magnet is provided.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: May 28, 1991
    Assignee: Eastman Kodak Company
    Inventors: James K. Lee, Donald J. McJury, Michael A. Pickup, Kelly S. Robinson