초록 ▼

A portable, thermal bag for containing a food product, such as pizza. The bag has top and bottom panels and is closed along both sides and at the rear end. The front end is open to permit insertion and removal of the food product. The top and bottom panels each have an outer cover layer and an inner

A portable, thermal bag for containing a food product, such as pizza. The bag has top and bottom panels and is closed along both sides and at the rear end. The front end is open to permit insertion and removal of the food product. The top and bottom panels each have an outer cover layer and an inner cover layer, and an electric resistance wire between the cover layers. The resistance wires may be plugged into the cigarette lighter of a delivery vehicle to keep the food product warm. A thermostat is placed in the center of the top panel to control the temperature. The bag has a quick release connector which may also be plugged into a low voltage transformer in a restaurant where several bags may be kept before being used to carry a pizza in a delivery vehicle.

대표청구항 ▼

[ What is claimed is:] [1.] A portable, flexible thermal bag having top and bottom panels, closed sides, one closed end and one open end for the insertion and removal of a food product,said top and bottom panels each having a flexible inner cover layer and a flexible outer cover layer and a flexible

[ What is claimed is:] [1.] A portable, flexible thermal bag having top and bottom panels, closed sides, one closed end and one open end for the insertion and removal of a food product,said top and bottom panels each having a flexible inner cover layer and a flexible outer cover layer and a flexible heat-insulating layer between said inner and outer cover layers,heating means comprising a first flexible heater in said top panel between the inner cover layer and heat-insulating layer thereof and a second flexible heater in said bottom panel between the inner cover layer and heat-insulating layer thereof,said heaters each comprising a flexible electrical resistance wire extending over a major portion of the extent of the respective top and bottom panels, said wires being connected to one another to provide an electrical heating circuit,first and second flexible heater support layers on opposite sides of the wire in said top panel to sandwich therebetween the wire in said top panel,third and fourth flexible heater support layers on opposite sides of the wire in said bottom panel to sandwich therebetween the wire in said bottom panel,said first and second heater support layers being adhered together by adhesive and said third and fourth layers being adhered together by adhesive,said heater support layers being made of resinous foam material such that the wires therebetween will settle into the foam and be prevented from shifting, the adhesive providing further resistance to shifting of the wires,a thermostatic control for said heating means located in said top panel between the first and second heater support layers approximately midway between the sides and midway between the ends of the bag, andmeans for releasably closing the open end of said bag,said bag being sufficiently flexible to permit it to be turned inside-out to facilitate cleaning of the bag.