Patents by Inventor Edward D. Higgins

Edward D. Higgins 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).

  • Patent number: 4041901
    Abstract: Electrostatic printing or coating apparatus including a main drum for transporting developer mix to an application or printing zone and having permanent magnet segments mounted within the drum for attracting developer mix to its exterior surface. An electric field is produced in the printing zone to provide movement of developer particles toward the article to be printed or coated and a field producing electrode is mounted within the drum adjacent the printing zone. A container conveyor extends past the printing zone to provide positioning of container portions to be coated, and a further drum having interior permanent magnet segment is positioned to remove developer mix from the main drum. The further drum may be rotated in the rotational direction opposite that of the main drum to reduce developer turbulence.
    Type: Grant
    Filed: February 22, 1974
    Date of Patent: August 16, 1977
    Assignee: Continental Can Co., Inc.
    Inventors: Kenneth W. Rarey, Edward D. Higgins, Donald L. Hungerford, John B. Kennedy, Jr.