| 摘要 |
A fluid dispenser (1) for dispensing a metered volume of a fluid product (2) has a storage chamber (57) for storing the fluid product in; a dispensing outlet (27) through which the fluid product is dispensable from the dispense r; a metering chamber (73) which is adapted to provide the metered volume of th e fluid product for dispensing through the dispensing outlet by movement of th e metering chamber between a contracted state and an expanded state, movement of the metering chamber from the contracted state to the expanded state placing the metering and storage chambers in fluid communication to enable the metering chamber to receive from the storage chamber an excess volume of the fluid product comprising the metered volume and a surplus volume; and a blee d arrangement (55a, 55b) adapted to bleed the surplus volume of the fluid product from the metering chamber. The metering chamber is defined by a boundary wall having a first section (43) movably mounted in the dispenser t o move the metering chamber between the expanded and contracted states. The first section of the metering chamber boundary wall and the storage chamber are provided by a container unit (43, 57) which is movably mounted in the dispenser.
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