Patents by Inventor Daniel E. Hammett

Daniel E. Hammett 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: 5085366
    Abstract: A method is described for continuously producing a smooth, high gloss coating on a paper container comprising the steps of applying a substantially uniform coating of melted wax material to the outside surface of the container or sheet stock, maintaining the temperature of the wax coating above its melting point and above its congealing temperature, imparting a constant surface velocity to the outside surface of the container or sheet stock and applying a substantially uniform film of liquid coolant, particularly water, to the outside surface of the container or sheet stock whereby the surface velocity of the coolant is substantially equal to the surface velocity of the container or sheet stock.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: February 4, 1992
    Assignee: Sweetheart Cup Company
    Inventors: Ronald A. Durgin, Derek S. Matheson, Delvin K. Border, Carlton L. Kennet, Daniel E. Hammett
  • Patent number: 5078313
    Abstract: Single ply paperboard containers are wax-coated by directing a relatively narrow spray band of atomized wax towards the interior surfaces of the containers being treated. The spray band is volumetrically asymmetrical and is oriented relative to the interior surfaces of the container such that its volumetric asymmetry is directed towards the bottom circumferential seam between the tubular side wall and bottom wall of the containers. In this manner, a minimal (but fluid-impervious effective) nonsaturating amount of wax will be applied to the interior surfaces of the container so as to preserve the vivid appearance of color graphics and/or indicia that may be printed on the exterior surface of the container. At the same time, the volumetric asymmetry and orientation of the spray band ensures that a maximum amount of wax will be applied at or near the circumferential bottom seam so that a fluid-impervious fillet seal may be established thereat.
    Type: Grant
    Filed: July 11, 1990
    Date of Patent: January 7, 1992
    Assignee: Sweetheart Cup Company Inc.
    Inventors: Derek S. Matheson, Wesley R. Bush, Carton L. Kemmet, Donald C. Lundgren, David W. Norwood, Robert Brown, Romano Balordi, Onisim Krasnokutsky, Daniel E. Hammett
  • Patent number: 5039560
    Abstract: A method is described for continuously producing a smooth, high gloss coating on a paper container comprising the steps of applying a substantially uniform coating of melted wax material to the outside surface of the container or sheet stock, maintaining the temperature of the wax coating above its melting point and above its congealing temperature, imparting a constant surface velocity to the outside surface of the container or sheet stock and applying a substantially uniform film of liquid coolant, particularly water, to the outside surface of the container or sheet stock whereby the surface velocity of the coolant is substantially equal to the surface velocity of the container or sheet stock.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: August 13, 1991
    Assignee: Sweetheart Cup Company
    Inventors: Ronald A. Durgin, Derek S. Matheson, Delvin K. Border, Carlton L. Kemmet, Daniel E. Hammett
  • Patent number: 4136744
    Abstract: A power tillage device is provided having a passive rolling coulter as the prime mover for a power tillage blade which is carried in the lead of the coulter on a transfer case mounted as a radius arm on the counter shaft. The tillage blade rotates in the opposite direction from the coulter and is designed for optimum efficiency for shearing and lifting soil from a furrow.
    Type: Grant
    Filed: July 12, 1977
    Date of Patent: January 30, 1979
    Assignee: The University of Kentucky Research Foundation
    Inventors: Daniel E. Hammett, Edward M. Smith