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    • 5. 发明申请
    • DISPENSING DEVICE WITH PRESSURE RELEASE
    • 配有压力释放装置
    • WO2011017181A1
    • 2011-02-10
    • PCT/US2010/043607
    • 2010-07-29
    • 3M INNOVATIVE PROPERTIES COMPANYMAXA, Steven, J.CERNOHOUS, Adam, J.
    • MAXA, Steven, J.CERNOHOUS, Adam, J.
    • B05C17/005B65D83/00A61C5/06
    • B65D83/0027A61C5/66A61M2005/3123B05C17/00576B05C17/00579B65D2205/04Y10T29/49826
    • Improved dispensing devices (100) and methods are provided that include a hollow barrel (102) containing the composition to be dispensed along with a piston (120, 220, 320, 420) received in one end (104) of the barrel (102) for dispensing the composition from the opposite end (106) of the barrel (102). At least one tortuous groove (200, 202, 204, 226, 326, 426, 436) extends across the side of the piston (120, 220, 320, 420) and communicates with the exterior of the barrel (102). The groove (200, 202, 204, 226, 326, 426, 426, 436) allows both air and the composition to travel along the side of the piston (120, 220, 320, 420) as the piston advances into the barrel (102). By- permitting passage of both air and the composition, the groove (200, 202, 204, 226, 326, 426, 436) eliminates air pockets in the composition while alleviating pressure in the barrel (102) as the piston (120, 220, 320, 420) advances.
    • 提供改进的分配装置(100)和方法,其包括容纳待分配的组合物的中空筒体(102)以及容纳在筒体(102)的一端(104)中的活塞(120,220,320,420) 用于从筒体(102)的相对端(106)分配组合物。 至少一个曲折的凹槽(200,202,204,226,326,426,436)横跨活塞(120,220,320,420)的一侧延伸并且与筒体(102)的外部连通。 当活塞进入筒体(20,202,204,226,326,426,426,436)时,空气和组合物可以沿着活塞(120,220,320,420)的侧面行进, 102)。 通过允许两个空气和组合物通过,凹槽(200,202,204,226,326,426,436)消除组合物中的空气袋,同时减轻了作为活塞(120,220)的筒体(102)中的压力 ,320,420)前进。