F - Mech Eng,Light,Heat,Weapons – 24 – C
Patent
F - Mech Eng,Light,Heat,Weapons
24
C
309/69.3
F24C 7/08 (2006.01) A47J 39/00 (2006.01)
Patent
CA 1161485
FOOD SERVING SYSTEM Abstract of the Disclosure An energy saving food serving system for rethermalization of the food and for delivery prepared meals to locations remote from the place of preparation, such as to patients in hospitals and nursing homes. The system includes a mobile cart having its own rechargeable power pack that is utilized to propel the cart. This power pack may also be used for heating purposes but, preferably to conserve battery usage heating may also be provided via a conventional AC source. The cart has separate bays, each having a tier of racks for carrying individual food serving trays. Each tray has one or more thermally isolated heat transfer devices which are select- ably energized when the tray is in place on a rack in the cart. The trays are constructed to carry conventionally styled removable dishes, bowls, cups, etc., that may be either dispos- able or reuseable. Preferably, each tray has a pair of heaters referred to herein as plate and bowl heaters and adapted to be operated by control means in either a continuous mode of operation or a rethermalization mode of operation. In the rethermalization mode of operation the manually selected heaters -2- associated with trays in all bays are operated for a predeter- mined period of time of, for example, 25 minutes, to rethermal- ize the food from a frozen or at least cold state to a tempera- ture on the order of 170°F.-180°F. Thereafter, the heaters in predetermined bays are operated cyclically to hold the food at the desired temperature range. During the initial predetermined period of the rethermalization mode the heaters may be operated on a continuous "on" basis or may be operated cyclically but preferably at a higher duty cycle and in the maintaining state which follows the predetermined period. In another embodiment each tray may be provided with separate heaters, one being activated for normal operation and the other for rethermalization operation. These heaters are selectively of different heating powers.
363131
Mack Anthony C.
Phillips Robert A.
Shumrak George K.
Swabey Ogilvy Renault
Sweetheart Plastics Inc.
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