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    • 6. 发明授权
    • Liquid dispensing pump
    • 液体分配泵
    • US6095377A
    • 2000-08-01
    • US276926
    • 1999-03-26
    • Steve L. SweetonJoseph K. Dodd
    • Steve L. SweetonJoseph K. Dodd
    • B65D47/34B05B11/00F04B9/14F04B53/14F04B53/16B67D5/40
    • B05B11/3011B05B11/0016
    • A manually actuated dispensing pump has a pump housing for mounting with a closure cap at an upper end of a container for fluent product, the housing having a pump cylinder open at its outer end to atmosphere and providing at its inner end area a pump chamber for a manually reciprocable piston having a resilient piston seal, the cylinder having in its lower area at least one vent port positioned outwardly of the chamber, the piston having a vent seal for closing communication between the open end of the cylinder and the vent port, the piston forming a sub-assembly with the housing upon insertion into the cylinder through the open outer end thereof, and one or more ramps or tapered ribs being provided adjacent the vent port for spacing the piston seal from an inner edge of the vent port permitting the piston seal to by-pass the vent port to avoid any damage of the piston seal upon assembly into the cylinder.
    • 手动启动的分配泵具有泵壳体,用于在用于流体产品的容器的上端处用于封闭盖安装,所述壳体具有在其外端开放到大气层的泵筒,并且在其内端区域处提供泵室, 具有弹性活塞密封件的手动可往复运动的活塞,所述气缸在其下部区域中具有位于所述腔室外部的至少一个排气口,所述活塞具有用于封闭所述气缸的开口端和所述通气口之间的连通的通气密封件, 活塞在其通过其开放的外端插入到气缸中时与壳体形成子组件,并且一个或多个斜面或锥形肋邻近排气口设置,用于将活塞密封件与通气口的内边缘隔开,允许 活塞密封件绕过排气口,以避免在组装到气缸中时活塞密封件的任何损坏。