Patent ID: 8567647

Claim:
A valve device for a drinking receptacle, the valve device comprising: a sleeve for discharging fluid from the drinking receptacle, the sleeve having an upstream end and a downstream end; valve stem that is axially movable in the sleeve in both upstream and downstream directions; wherein the valve stem comprises a closed upstream end having an elastic ring-shaped seal collar that extends outwardly towards the sleeve and faces in the downstream direction, wherein the valve stem further comprises at least one pipe wall opening located downstream of the seal collar, and wherein discharge of the fluid from the drinking receptacle occurs through the at least one pipe wall opening and into the valve stem when the valve stem is located in an open utility mode position; a ring-shaped seal bulb that extends into the sleeve and is located between the upstream end and the downstream end; an upstream-directed storage seal seat on the ring-shaped seal bulb, wherein the upstream-directed storage seal seat seals with the ring-shaped seal collar so as to prevent discharge of the fluid from the drinking receptacle when the valve stem is located in a closed storage mode position; and an upstream-directed ring-shaped end seat that is located upstream of the seal bulb and that seals with the elastic ring-shaped seal collar and prevents discharge of the fluid from the drinking receptacle when the valve stem is located in a closed utility mode position; wherein the ring-shaped seal bulb is located downstream of both the upstream-directed ring-shaped end seat and the ring-shaped seal collar; and wherein the upstream-directed storage seal seat does not seal with the ring-shaped seal collar when the valve stem is located in the closed, utility mode position.