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    • 10. 发明授权
    • Precise output pump sprayer
    • 精密输出泵喷雾器
    • US4692103A
    • 1987-09-08
    • US847453
    • 1986-04-03
    • Walter F. Anderson
    • Walter F. Anderson
    • B05B11/00F04B21/04F04B39/10
    • B05B11/3019
    • A pump sprayer has a body with aligned relatively large and small diameter cylinder portions and relatively large and small diameter pistons respectively reciprocable therein and delimiting with the cylinder a variable volume pump chamber during pumping, the small diameter piston shifting relative to the large diameter piston for opening the discharge. Cooperating limit stops acting between the piston members limit the relative movement thereof during a valve open position so as to thereby limit the duration during which the discharge passage is open irrespective of different external reciprocating pressures applied during pumping, such that the output of the sprayer is controlled during pumping.
    • 泵喷雾器具有排列相对较大且小直径的圆筒部分的主体以及分别在其中往复运动的相对较大和小直径的活塞,并且在泵送期间与圆筒分隔成可变容积的泵室,小直径活塞相对于大直径活塞移动, 开放放电 作用在活塞构件之间的合作限制限制了其在打开位置时的相对运动,从而限制排出通道打开的持续时间,而不管泵送期间施加的不同的外部往复运动压力如何,喷雾器的输出为 在泵送期间控制。