Patent ID: 7762429

Claim:
A portable water cooler comprising: a hollow body including: side walls; and a base; wherein said base is configured for resting on a surface; wherein said hollow body is comprised of a plurality of layers, at least one layer in said plurality being a thermally insulating layer; and wherein said side walls and said base define an internal volume; a fluid flow pathway connecting said internal volume to the space external to said hollow body, said fluid flow pathway comprising: a spike comprising: a generally cylindrical elongated hollow shaft having a first end, a second end, and a circumference; a conical point attached to said first end of said shaft and having a circumference generally equal to said circumference of said shaft; and at least one opening into which fluid can flow, said spike immovably positioned within said interior volume and extending generally vertically from said base; a spigot positioned external to said hollow body at a position above said base when said base is resting on said surface; and an enclosed channel connecting said second end of said shaft to said spigot; and at least two flexible bags containing fluid and positioned in said internal volume wherein said at least one of the at least two flexible bags is positioned such that after fluid from another flexible bag has been dispensed, the wall of said at least one of the at least two flexible bags will be penetrated by said spike.