发明名称 |
Hydraulic gravity ram pump |
摘要 |
A piston type pumping apparatus comprises a vertically oriented cylinder having a top and a bottom with a first aperture. There are first and second passageways for liquid in the cylinder at the top and bottom respectively thereof. A piston is reciprocatingly mounted within the cylinder and has an area against which pressurized fluid acts in the direction of movement of the piston. A hollow piston rod is connected to the piston and extends below the piston and slidably through the first aperture. There is a reload chamber below the cylinder. The piston rod extends slidably into the reload chamber and has a third passageway for liquid communicating thereto. A first one-way valve is located in the third passageway. There is also a fourth passageway that extends from the reload chamber to a source of liquid to be pumped and a second one-way valve therein. |
申请公布号 |
US7967578(B2) |
申请公布日期 |
2011.06.28 |
申请号 |
US20050587903 |
申请日期 |
2005.01.27 |
申请人 |
|
发明人 |
MCNICHOL RICHARD FREDERICK;BRYCE GORDON |
分类号 |
F04B17/00;F04B9/08;F04B9/107;F04B35/00;F04B47/08;F04B47/10;F04F7/02 |
主分类号 |
F04B17/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|