초록 ▼

An appliance is provided which is capable of transmitting heat retained therein to cooked food placed in the appliance, so that the food can be kept hot when an electrical cord used for initially causing the appliance to be electrically heated is disconnected therefrom. The appliance includes an out

An appliance is provided which is capable of transmitting heat retained therein to cooked food placed in the appliance, so that the food can be kept hot when an electrical cord used for initially causing the appliance to be electrically heated is disconnected therefrom. The appliance includes an outer casing and a removable cover, both of which are made of materials that retard heat loss from the appliance, preferably non-metallic materials. It further includes a housing enclosed by the casing and cover and made of a non-metallic material, such as plastic, in which a non-metallic heat retaining material, such as wax, is confined. Disposed throughout the heat retaining material is a resistance heater, which is removably connected to the electrical cord for melting the material, so that the heat of fusion of the melted material may be transmitted into the food to reduce its cooling rate after the heater is disconnected from the cord.

대표청구항 ▼

A heat retaining appliance comprising: a housing, the housing being formed by a liner adapted to receive a product to be heated and a tray secured to the liner, the rate of heat transfer through the material of which the liner is made is between about 0.75 and about 5.0 B.T.U./sq. ft./hr./°F./in. an

A heat retaining appliance comprising: a housing, the housing being formed by a liner adapted to receive a product to be heated and a tray secured to the liner, the rate of heat transfer through the material of which the liner is made is between about 0.75 and about 5.0 B.T.U./sq. ft./hr./°F./in. and the thickness of the liner is between about 0.06 and about 0.15 in.; a substantially non-metallic heat retaining material confined within the housing; a heater disposed in the housing for heating the material; and means for activating the heater, the means being removably connected with the heater so that after the heater is activated and the means is removed, the product is heated by the introduction therein through the liner of the heat of fusion of the material.