发明名称 |
Submersible pump with alternate pump operation control means |
摘要 |
A submersible pump adapted to pump out the liquid in a reservoir has a built-in control unit for alternate pump operation. The control unit includes step memory means which provides a signal to permit the starting of pump operation every other time a high liquid level sensor senses the liquid. Once started, the pump continues its operation until the liquid level drops below a low liquid level sensor. The submersible pump can be combined with an additional pump having a conventional control unit in which case the two pumps are alternately operated.
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申请公布号 |
US4437811(A) |
申请公布日期 |
1984.03.20 |
申请号 |
US19800163948 |
申请日期 |
1980.06.30 |
申请人 |
EBARA CORPORATION;EBARA DENSAN, LTD. |
发明人 |
IWATA, MINORU;MURATA, YUKIO;SHIBATA, TOMOYUKI |
分类号 |
F04B49/025;F04D15/02;(IPC1-7):F04B49/04 |
主分类号 |
F04B49/025 |
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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