摘要:
This application discloses cups formed from plastic heat insulating material wherein the bottom of each cup is relatively thin while its side wall is relatively thick. Cups formed in accordance with the invention may be stacked and by virtue of their construction there will be less heat transfer through the side wall than through the bottom whereby the liquid contained in each cup in the stack will be maintained at a desired temperature for relatively long periods of time.
摘要:
A food delivery system for use in a hospital or other institution is disclosed. The system comprises a portable cart having compartments for receiving stackable food trays therein. A platform operated by a lever mechanism is provided on the cart for stacking the trays in intimate contact with each other to form a vertical thermal column for retaining heat or cold during transporting of the trays. During loading and unloading the platform is lowered to permit the trays to rest on ''''L'''' brackets which are spaced such that each tray is out of contact with every other tray.