| 摘要 |
A fluid dispenser system being a substantially conventional squeeze bottle within which a collapsible flaccid bag, containing dispensable fluid, is suspended. The bag is spaced from interior surfaces of the bottle and a pressure actuated valve, that facilitates fluid discharge and blocks against back flow entry of air into the bag, closes the bag. The bottle is vented, having a vent hole which is normally open, permitting air entry into the space between the interior surfaces of the bottle and the exterior surfaces of the bag. This vent hole requires obturation incidental with squeezing of the bottle, for fluid dispensing. In that situation air is trapped in the space and compressed, and indirectly exerts outwards pressure against the valve causing the valve to open, and promotes dispensing of the fluid whereby the bag progressively collapses as fluid is expelled.
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