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21. 发明授权

US4506803A Metered aerosol dispenser and method of using the dispenser 失效
标题翻译：计量气溶胶分配器和使用分配器的方法
公开(公告)号：US4506803A
公开(公告)日：1985-03-26
申请号：US406421
申请日：1982-08-09
申请人： Michael L. Franklin , Fang-Chung Chen
发明人： Michael L. Franklin , Fang-Chung Chen
IPC分类号： B65D83/44 , B05B9/04 , B65D83/14 , G01F11/32
CPC分类号： B65D83/54 , G01F11/32
摘要： An aerosol dispenser dispenses the contents of a metering chamber by depression of a slidable stem which extends through the metering chamber and into the main fluid reservoir of the dispenser. The stem includes a dispensing passage which lies within one of a pair of chamber sealing sleeves when the stem is in a rest position, thus fluidically isolating the exterior of the apparatus from the metering chamber. In this position, the metering chamber and the main reservoir are also fluidically isolated from each other. After shaking the dispenser to mix its contents, i.e., an active agent and propellant, the stem is then depressed into a charging position in which the dispensing passage is placed into engagement with an additional sealing sleeve mounted within the metering chamber to fluidically isolate the metering chamber from the exterior of the dispenser. Simultaneously, the bypass passage is positioned to straddle the other chamber sealing sleeve, and to thus fluidically connect the main reservoir to the metering chamber, which is then charged with the active agent and propellant from the reservoir. The stem is then released, and a spring drives the stem towards its first rest position. During this movement, the apparatus is in its dispensing position, and the contents of the charged metering chamber are dispensed through the dispensing passage exteriorly of the apparatus. After each metered dose is dispensed, the stem returns to its rest position, and the metering chamber is again fluidically isolated from both the reservoir and the exterior of the dispenser.
摘要翻译：气雾剂分配器通过按压可滑动的杆来分配计量室的内容物，其可延伸穿过计量室并进入分配器的主流体储存器。当杆处于静止位置时，杆包括位于一对腔室密封套筒之一内的分配通道，从而使设备的外部与计量室流体隔离。在这个位置上，计量室和主储存器也是相互流体隔离的。在摇动分配器以混合其内容物即活性剂和推进剂之后，将杆压入充电位置，其中分配通道被放置成与安装在计量室内的另外的密封套接合，以流动地隔离计量室从分配器的外部。同时，旁路通道被定位成跨越另一个腔室密封套筒，并且因此将主容器流体连接到计量室，然后将其从储存器中装入活性剂和推进剂。然后释放杆，并且弹簧将杆驱动到其第一静止位置。在该运动期间，装置处于其分配位置，并且通过设备外部的分配通道分配带电计量室的内容物。在分配每个计量剂量之后，杆返回到其静止位置，并且计量室再次与分配器的储存器和外部流体隔离。

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