Patents Assigned to Hamilton-Dunn Research Co.
  • Beverage warmer
    Patent number: 4523083
    Abstract: A beverage warmer assembly comprising a support unit having an electrically heated surface on which a beverage-container unit such as a cup may rest, the container unit and the support unit having magnetically coacting elements so mounted to the respective units that a switch is (a) connected for electrical heating of the surface for one orientational relation of container-unit seating on the surface and (b) is inoperative for a different orientational relation of container-unit seating on the surface.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: June 11, 1985
    Assignee: Hamilton-Dunn Research Co.
    Inventor: William H. Hamilton