发明名称 |
Fluid controlled pumping system and method |
摘要 |
A fluid level controlled pumping system includes a pumping unit disposed within a fluid cavity. The pumping unit includes an inlet operable to receive a fluid to be pumped from the fluid cavity. The system also includes a valve slidably coupled to the pumping unit. The valve includes a passage for receiving pumped fluid from an outlet of the pumping unit. In response to a decreasing fluid level within the fluid cavity, movement of the valve relative to the pumping unit aligns the passage with a port of the pumping unit to recirculate the pumped fluid from the outlet to the inlet.
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申请公布号 |
US6945755(B2) |
申请公布日期 |
2005.09.20 |
申请号 |
US20030627551 |
申请日期 |
2003.07.25 |
申请人 |
CDX GAS, LLC |
发明人 |
ZUPANICK JOSEPH A.;RIAL MONTY H. |
分类号 |
E21B47/00;F04C13/00;F04C14/08;F04C14/28;(IPC1-7):F04B49/00;E21B33/03 |
主分类号 |
E21B47/00 |
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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