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    • 3. 发明授权
    • Pump dispenser for liquid products
    • 液体产品用泵分配器
    • US07032783B1
    • 2006-04-25
    • US10146325
    • 2002-05-14
    • David C. KampRaymond C. Lewis, Jr.Richard D. LohrmanThomas P. RoyceGennaro R. Martire
    • David C. KampRaymond C. Lewis, Jr.Richard D. LohrmanThomas P. RoyceGennaro R. Martire
    • B65D88/54
    • B05B11/007B05B11/3001B05B11/3067
    • A pump dispenser for liquid products includes a pump chamber having a cylinder, and a piston slidable within the cylinder with an outlet passage extending through the piston. A spring within the chamber urges the piston to an extended position. An inlet opening is disposed at an end of the chamber for receiving product to be dispensed. An inlet check valve is positioned at the inlet opening to permit entry of product into the chamber as the piston is extended by the spring, but to prevent exit of product from the chamber through the inlet opening as the piston is depressed against the spring. An outlet check valve is carried by the piston within the outlet passage to permit discharge of product from the chamber through the outlet passage as the piston is depressed against the spring. The outlet valve includes a concave valve body of flexible resilient construction opening away from the chamber and having an external periphery in radial surface-to-surface resilient sealing contact with an opposing radially inwardly facing wall surface of the outlet passage.
    • 用于液体产品的泵分配器包括具有气缸的泵室和可在气缸内滑动的活塞,具有延伸穿过活塞的出口通道。 室内的弹簧促使活塞处于延伸位置。 入口开口设置在腔室的端部,用于接收要分配的产品。 入口止回阀定位在入口开口处,以允许当活塞通过弹簧延伸时,产品进入腔室,但是为了防止当活塞抵靠弹簧压下时通过入口开口将产品从腔室中排出。 出口止回阀由出口通道内的活塞承载,以允许当活塞抵靠弹簧压下时,产品从室通过出口通道排出。 出口阀包括柔性弹性结构的凹形阀体,其远离腔室开口,并且具有与出口通道的相对径向向内的壁表面径向表面到表面弹性密封接触的外周边。