发明名称 |
Liquid dispensing pump having water seal |
摘要 |
A manually actuated pump dispenser has a water seal for maintaining the container vent ports sealed closed during pumping until at or near the end of the pressure stroke whereupon a vent path through which only air is permitted travel into the container, is open as the path is shielded against water entering the vent path when pumping in a wet environment as when dispensing hair shampoo or hair conditioner. In a plunger lock-down position of shipping and storage, leakage of product through the vent ports is substantially avoided during a superatmospheric condition within the container.
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申请公布号 |
US5738250(A) |
申请公布日期 |
1998.04.14 |
申请号 |
US19970826702 |
申请日期 |
1997.04.07 |
申请人 |
CALMAR INC. |
发明人 |
GILLINGHAM, JAMES R.;LI, TANNY;SIEGEL, KENNETH D. |
分类号 |
B05B11/00;B65D47/34;(IPC1-7):B67D5/42 |
主分类号 |
B05B11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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