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公开(公告)号：US4063068A
公开(公告)日：1977-12-13
申请号：US713907
申请日：1976-08-12
CPC分类号： H05B3/262 , A47J27/004
摘要： A portable food serving receptacle capable of heating chilled or frozen food to cooking or serving temperatures and automatically maintaining food at serving temperature. The receptacle consists of thin metallic walls and utilizes a flexible heating element of electrical and thermal insulating material. The heating element is adhered to the metallic walls of an inner dish of the receptacle. The insulating material of the heating element forms a laminated structure in which the electrical resistor is embedded. The walls of the receptacle have a substantially higher thermal conductivity than the laminate. The rate of heat flow from the heating element to the interface of the food and metallic walls of the receptacle is controlled by the thermal insulating characteristics of the laminate so that gradients of heat entering any given point of the food are substantially equal and are maintained at temperature levels below the scorching temperature of the food.
摘要翻译： 一种便携式食品容器，其能够加热冷冻或冷冻食品以烹饪或服务温度并在服务温度下自动维持食物。 容器由薄金属壁组成，并采用电气和隔热材料的柔性加热元件。 加热元件粘附到容器的内盘的金属壁上。 加热元件的绝缘材料形成嵌入电阻器的层叠结构。 容器的壁具有比层压板显着更高的热导率。 从加热元件到容器的食物和金属壁的界面的热流量由层压体的隔热特性控制，使得进入食物任何给定点的热量梯度基本相等并保持在 温度水平低于食物的焦烧温度。
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公开(公告)号：US5003159A
公开(公告)日：1991-03-26
申请号：US496451
申请日：1990-03-20
申请人： Robert D. Thorson
发明人： Robert D. Thorson
CPC分类号： H05B3/68 , A47J39/006 , A47B2031/026
摘要： A food service system for serving meals that include hot foods. The system comprises at least one generally circular dish having a top surface for holding the foods that are to be served warm, and a bottom surface, an electrical heating element in the dish for heating the foods on the top surface of the dish, and first and second electrical contacts on the bottom surface of the dish for supplying electrical energy to the heating element. The system further comprises at least one tray, having at least one generally circular well therein for receiving one of the generally circular dishes, and at least one aperture in the well for exposing the first and second electrical contacts on the bottom surface of the dish when the dish is seated in the well. The dish includes at least one foot and the well in the tray includes at least one stop for orienting the dish in the tray to orient the first and second contacts with respect to the aperture. The system further comprises a support for each tray, each support including first and second electrical power supply contacts for each dish, configured to make electrical contact with exposed first and second electrical contacts on the dish received in the well in a tray supported on the support.
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