Importance

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Abstract

An insulated water container comprises an enlarged, open-topped receptacle member formed of a thermal insulating material and defining a substantial interior volume, a given depth and a given cross-sectional area at the open top thereof and a cover member formed of a thermal insulating material and of cross-sectional dimensions similar to the open top of the receptacle member for providing a closure for the same. The cover member defines an access opening therethrough, over a minor fractional portion of the area thereof. An insulating wall surrounds the access opening and extends inwardly of the receptacle member to a predetermined depth for extending into and thermally isolating a minor fractional portion of a volume of water in the receptacle member defined within the insulating wall such that its surface is exposed to external conditions from a remaining major fractional portion of the volume of water in the receptacle member such that the latter volume is insulated from external conditions, so as to permit the major fractional portion of the volume of water to act as a thermal mass for substantially retarding temperature changes in the volume of water within the insulating wall and accessible by way of the access opening, and particularly of a portion thereof adjacent the surface.

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First Claim