Patents by Inventor Ray C. Raffa

Ray C. Raffa 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).

  • Magnetic separator
    Patent number: 5483042
    Abstract: Apparatus for spacing a plurality of substantially plate-like ferromagnetic workpieces such as can lids, in face-to-face relationship along a row, comprises a plurality of magnetic elements, each extending longitudinally along the row and different ones of the elements being disposed at different angular positions around the row, each of the magnetic elements being disposed and oriented to prevent the workpieces from pivoting about a distal edge of the workpiece due to the combined magnetic attraction of the workpiece by all others of the magnetic elements.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: January 9, 1996
    Assignee: Nordson Corporation
    Inventors: Robert A. Sprenger, Ray C. Raffa