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Patent application: In-flight service cart

Ben Welter - Thursday, December 06, 2018

DHL in-flight cart patent drawingU.S. patent application 20180346122 (applicants Tower Cold Chain Solutions Ltd. and DHL Supply Chain Ltd., Great Britain):

"An in-flight service cart for use on an aircraft for maintaining a payload such as foodstuffs and the like within a selected temperature range, said in-flight service cart including: a housing (3) having a storage volume; and at least one thermally insulated container (5) removably mounted within the housing, said container having an outer casing, a thermally conductive inner casing, thermal insulation located between the outer casing and the inner casing, said thermal insulation including at least one vacuum insulation panel, a payload volume for storing foodstuffs, an opening providing access to the payload volume, a closure member for closing the opening, at least one thermal energy storage unit located within the inner casing, said thermal energy storage unit(s) including a phase change material that is arranged to change phase at a temperature greater than or equal to -10° C.; wherein the inner casing and closure member  define the payload volume for storing the foodstuffs, and the thermal energy storage unit(s) is positioned in thermal contact with the inner casing, the arrangement being such that the inner casing provides a thermally conductive pathway for conducting heat entering the container to the thermal energy storage unit."

http://www.freepatentsonline.com/20180346122.pdf

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