Manually operated reciprocating liquid pump
作者： Philip L. Nelson , Donald D. Foster
DOI:
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摘要: A manually operated reciprocating liquid pump (10) employs both a priming valve (20) and check (18) where the performs dual functions of sealing to prevent inadvertent leakage through when it is not in an upright orientation.
lens.org 参考文章(2)
Walter F. Anderson, Precise output pump sprayer ,(1986)
Cooprider Walter Wayne, Improvements in or relating to Reciprocating Liquid-Dispensing Pumps ,(1969)