| 摘要 |
An isolation-type aerosol dispenser for a fluid product, which includes a slidable piston, movable in a chamber between a dispensing and a non-dispensing position. The piston and chamber are adapted for regulating communication between a product container and a venturi-type, discharge nozzle of the dispenser, according to the movement of the piston. The product container communicates with the discharge nozzle only when the piston is in the dispensing position in the chamber. During dispensing, flow of aerosol propellant to the discharge nozzle is conducted to the chamber and causes the piston to be moved to the dispensing position. The piston and chamber are also adapted to vent the product container only when the piston is in the dispensing position.
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