Patent ID: 7310967
Filing Date: 2007-12-25
Classification: F25D

Abstract:
1. A container for frozen shipping of products at extreme subzero temperatures, comprising: a generally rectangular container body, sidewalls, top and bottom, and defining a product compartment; an outer skin, covering said sidewalls and said top and bottom sides, for structural protection of said container from the environment; an inner skin, for isolating and protecting the container from the product being shipped, with said inner skin secured within said container without any thermally conductive connection with said outer skin; an insulation layer between said outer skin and said outer skin, for preventing heat transfer between said product compartment and said outer skin; at least one access door in said container body for placement and removal of said product said container body, and for access to a bunker; a second door with access to said refrigerant bunker to allow refrigerant to be recharged without the loss of refrigerant already inside said bunker; at least one latch for securing said access door in a closed position; a refrigerant bunker in the container body, for holding solid refrigerant; a pressure release valve in said container body, for relieving pressure buildup inside said container body; and a non freezing gasket between said container body and said first door, so that said first door may be opened and is not frozen to said container body; wherein said bunker is configured to be loaded with a solid refrigerant, and said product compartment is configured for placement of a product to be frozen or which is already frozen through said access door, with said access door sealable with said latch for transport of product in a frozen state.