Patent ID: 7484639

Claim:
A liquid container comprising a cup including a brim, a floor, and a side wall extending from the brim toward the floor, the side wall including a radially inwardly facing first annular seal surface extending in a first plane, the brim including an inner annular strip providing a radially inwardly facing second annular seal surface extending in a second plane, an annular bridge providing an axially upwardly facing third annular seal surface, and an outer annular strip providing a radially outwardly facing fourth annular seal surface and lying in spaced apart relation to the inner annular strip to define a downwardly opening annular channel bounded by the inner and outer annular strips and the annular bridge, wherein the first and second planes are not coplanar and a lid including a closure and a closure mount ring appended to the closure and coupled to the brim to retain the closure in a position closing a mouth opening into a liquid reservoir chamber formed in the cup, the closure mount ring including a first seal ring arranged to engage the radially inwardly facing first annular seal surface to establish a first liquid flow barrier therebetween, a second seal ring arranged to engage the radially inwardly facing second annular seal surface of the inner annular strip to establish a second liquid flow barrier therebetween, a third seal ring arranged to engage the axially upwardly facing third annular seal surface of the annular bridge to establish a third liquid flow barrier therebetween, and a fourth seal ring arranged to engage the radially outwardly facing fourth annular seal surface of the outer annular strip to establish a fourth liquid flow barrier therebetween, wherein the liquid flow barriers block unwanted discharge of liquid from the chamber and wherein the closure mount ring includes a first annular segment arranged to surround the first seal ring to define an annular channel located therebetween, the second, third, and fourth seal rings cooperate to define an annular chamber communicating with the annular channel and receiving the brim therein, and an upper portion of the side wall of the cup extends through the annular channel when the brim is located in the annular chamber.