Patent ID: 8034036

Claim:
An adapter sized to fit an opening of a separate portable fluid container, the adapter comprising: a tube having a first end and a second end, wherein the tube is hollow along its length and has openings at the first end and the second end; an eye cup; and a neck portion configured to provide a fluid-tight seal with the opening of the separate portable fluid container, wherein the neck portion is connected to the eye cup and the first end of the tube such that the tube and the neck portion provide a fluid passageway from the separate portable fluid container to the eye cup; and wherein the second end of the tube is configured to extend into the separate portable fluid container; and wherein the eye cup further comprises: a portion in fluid communication with the opening at the first end of the tube; a first hollow arm having a first part extending outwardly from the portion of the eye cup, a second part extending upwardly, and a third part extending inwardly relative to the second part, wherein the second part is disposed between, and in fluid communication with, the first part and the third part; and a second hollow arm having a fourth part extending outwardly from the portion of the eye cup away from the first part of the first hollow arm, a fifth part extending upwardly, and a sixth part extending inwardly relative to the fifth part, wherein the fifth part is disposed between, and in fluid communication with the fourth part and the sixth part.