| 摘要 |
A bottle having a valve system which prevents fluid which is stored in the bottle from flowing out of the neck until a user squeezes the base of the bottle as a molded plastic base with flexible walls and a fluid reservoir. A molded plastic neck portion may have a base opening adjacent to the fluid reservoir, a bottle opening through which the fluid may exit the bottle, and a channel connecting the base opening with the bottle opening. The neck portion may have an upper retaining lip and a lower retaining lip disposed within the neck portion. The neck portion may also have a retention groove in between the upper retaining lip and the lower retaining lip. A valve having a flexible flap with an edge and a blocking portion may be disposed within the neck. The valve may have a closed position in which the flap edge is releasably disposed within the retention groove and in which the blocking portion extends across and obstructs the channel to prevent the fluid from flowing through the channel. The valve may also have an open position in which the flap edge is disengaged from the retention groove and the channel is substantially unobstructed by the blocking portion. The flap may remain entirely within the bottle in the open position. The valve is initially closed in the closed position and remains in the closed position until the user squeezes the flexible walls.
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