Patents Assigned to Duke Manufacturing Company
  • Patent number: 6561317
    Abstract: The invention is embodied in a commercial foodservice system having a primary counter unit constructed and arranged to perform a direct or related foodservice function, and an independent peripheral unit constructed and arranged in juxtaposition with the counter unit to perform a non-foodservice function. The foodservice system encompasses arrangements of multiple counter units disposed in-line and/or at selective angularity, and intermediate free-standing pylon peripheral units and bridging canopy peripheral units.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: May 13, 2003
    Assignee: Duke Manufacturing Company
    Inventor: William R. Dudley
  • Patent number: 6541739
    Abstract: An oven for maintaining cooked foods at temperatures suitable for serving the foods or even for cooking foods has a cabinet containing multiple heat sinks of channel-shaped configuration. The ends of the heat sinks open out of the cabinet, so that any heat sink may receive a tray of food from either the front or back of the cabinet. The interior surface of the heat sinks generally conform to the cross-sectional shapes of the trays, so that the heat sinks lie along the bottoms and sides of the trays. The heat sinks have a heating elements extended along their sides and bottoms for elevating the temperature of the heat sinks and directing heat into the trays within the heat sinks. In addition, each heat sink also contains a cover which may close the top of the tray in the heat sink and thereby retard the escape of moisture from the tray or may vent the interior of the tray.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: April 1, 2003
    Assignee: Duke Manufacturing Company
    Inventors: Steven M. Shei, Clement J. Luebke
  • Patent number: D457016
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: May 14, 2002
    Assignee: Duke Manufacturing Company
    Inventor: William R. Dudley
  • Patent number: D457020
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: May 14, 2002
    Assignee: Duke Manufacturing Company
    Inventor: William R. Dudley
  • Patent number: D457361
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: May 21, 2002
    Assignee: Duke Manufacturing Company
    Inventor: William R. Dudley
  • Patent number: D457362
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: May 21, 2002
    Assignee: Duke Manufacturing Company
    Inventor: William R. Dudley
  • Patent number: D458059
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: June 4, 2002
    Assignee: Duke Manufacturing Company
    Inventor: William R. Dudley
  • Patent number: D461073
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: August 6, 2002
    Assignee: Duke Manufacturing Company
    Inventor: William R. Dudley