[in 3,908,749 145] Sept. 30, 1975
[ 54] FOOD SERVICE SYSTEM
 Inventor: Leslie G. Williams, Murfrcesboro, Tcnn.
 Assignee: Standex International Corporation,
 Filed: Mar. 7, 1974  Appl. No.: 449,034
 U.S. CI 165/2; 165/61; 312/236;
 Int. CI.2 F25B 13/00
 Field of Search 165/2,30,64,61,48;
 References Cited
UNITED STATES PATENTS
3,199,579 8/1965 Foster ct al 165/30
3.275.393 9/1966 Stentz et al 312/236
3.608,627 9/1971 Shevlin 165/2
Primary Examiner—Albert W. Davis, Jr.
Assistant Examiner—Daniel J. O'Connor
Attorney, Agent, or Firm—Wilson, Leonard & Fraser
A food service system comprising a cart that is movable from a central food preparation location to a remote food service location. The cart is insulated and has a rack for a plurality of individual meal service trays. Each tray carries cold foods in suitable dishes and a heat-retaining food service unit for food which may be either hot when placed therein or may be heated by connecting each unit to a source of electrical energy at the service location. The cart has conduit means which are connectable to a source of chilled air at the service location in order to keep the cold foods cold for a period of time while the food in the units is being heated to a desired serving temperature. If desired, instead of heating the food in the units at the service location, the heat-retaining units may be heated prior to departure from the food preparation location and will maintain the food therein at elevated temperature for a period of time, even while the cart is connected to the chilled air source for keeping the cold foods at a refrigerated temperature.
12 Claims, 6 Drawing Figures