Thermally insulated flask and process for producing it

Details Thermally insulated flask and process for producing it Thermally insulated flask and process for producing it

A - Human Necessities

47

J

A47J 41/00 (2006.01) A47J 41/02 (2006.01)

Patent

CA 2150065

A thermally insulating flask having two containers of flow-pressed aluminum, wherein an inner container is placed inside and at a distance from an outer container. The inner container forms a flask neck at the top of the inner container, which is connected in an air-tight manner with the outer container. Both containers are connected at the top by a material of low thermal conductivity, for example chrome-nickel steel, in an air-tight and rigid manner. The connecting piece can be constructed from a composite-plated chrome-nickel steel laminate, in which the aluminum layer has been removed by a lathe, leaving two collar rims, to allow welding to the aluminum containers, while the remaining chrome-nickel steel layer forms the mechanical connection which has low thermal conductivity.

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