초록 ▼

A receptacle for maintaining perishables, such as food, at a reduced temperature features an exterior shell joined to an interior shell so that a space occupied by a vacuum exists between them. The junction of the inner and outer shells is located on the exterior of the receptacle. Phase change mate

A receptacle for maintaining perishables, such as food, at a reduced temperature features an exterior shell joined to an interior shell so that a space occupied by a vacuum exists between them. The junction of the inner and outer shells is located on the exterior of the receptacle. Phase change material is disposed within compartments in the bottom of the receptacle and is covered by a false bottom. A cryogenic liquid, such as liquid nitrogen, is poured down the interior walls of the receptacle and into the compartments containing the phase change material so that the phase change material is frozen in situs. A liquid absorbing material may be substituted for the phase change material.

대표청구항 ▼

[ What is claimed is:] [1.] A portable receptacle for storing perishables at below ambient temperatures comprising:a) an outer shell;b) an inner shell defining an interior for receiving said perishables and joined to the outer shell and defining a space between the inner and outer shells, said space

[ What is claimed is:] [1.] A portable receptacle for storing perishables at below ambient temperatures comprising:a) an outer shell;b) an inner shell defining an interior for receiving said perishables and joined to the outer shell and defining a space between the inner and outer shells, said space being evacuated to below atmospheric pressure;c) said inner shell having a wide-mouth opening for access to the interior of the receptacle;d) a removable insulated lid removably closing said wide-mouth opening;e) means for dividing said interior so that at least one compartment that is separate and distinct from a remaining portion of the interior is defined, said at least one compartment having a refrigeration source disposed therein and said at least one compartment being positioned so that a cryogenic liquid may be poured therein through the wide-mouth opening to cool the refrigeration source to a desired temperature; andf) means for allowing egress of vaporized cryogen from said at least one compartment after the refrigeration source is cooled by the cryogenic liquid.