Patents by Inventor David J. Redfern

David J. Redfern 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).

  • Coating applicator head
    Patent number: 4466378
    Abstract: An applicator head, for applying a coating of material (e.g. hot-melt adhesive) to a passing ribbon comprises an extrusion slot disposed transverse to the direction of passage of the ribbon and arranged to apply a coating of material in at least one continuous band along the ribbon, and an arrangement for intermittently opening and closing an extrusion slot for applying a coating of material discontinuously in a band contiguous with said one band.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: August 21, 1984
    Assignee: Dynamelt Limited
    Inventors: John Rogers, David J. Redfern