| 摘要 |
An actuation device is provided for actuating a dispensing member and for dispensing a product contained with the dispensing member. The actuation device includes an inlet orifice, a dispensing orifice, a passage, a suction orifice and a vacuum mechanism. The inlet orifice is placed in flow communication with the dispensing member. The passage extends from the inlet orifice to the dispensing orifice. The suction orifice, which is distinct from the inlet orifice, flow communicates with the passage. The vacuum mechanism includes a variable-volume chamber having a collecting region and a chamber orifice. The variable-volume chamber is entirely contained within the actuation device. The chamber orifice is in flow communication with the suction orifice. At least a portion of the collecting region is below the level of the chamber orifice. The vacuum mechanism creates a partial vacuum inside the passage so that at least some of any residual product residing in the passage is conveyed, via the suction orifice and the chamber orifice, into the collecting region of the variable-volume chamber.
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