| 摘要 |
A liquid metered dispensing squeeze bottle includes: (a.) a squeezable container having an opening for dispensing liquid therefrom at one end and a bottom at the other end; (b.) a nonflexible trap chamber of a predetermined volume, connected to the opening of the container; (c.) a dip tube, and (d.) a one way valve at the bottom of the dip tube. In some embodiments, the one way valve system includes a generally inverted trapezoidal valve housing with tapered opposing sidewalls with an inlet orifice in each of said sidewalls, and an inverted trapezoidal valve having opposing slide valve ends, with a rest position when the bottle is upright wherein both inlet orifices are closed, a second position when the bottle is inverted 180 degrees wherein both inlet orifices are open to air, a third position when the bottle is upright and squeezed wherein at least one of the inlet orifices is open to air, and a fourth position when the bottle is rotated 90 degrees from upright wherein one of the inlet orifices is open to air and the other is closed.
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