发明名称 |
Long stroke pump |
摘要 |
A very high pressure pump apparatus which minimizes wear on the seals thereof and on valves connected thereto, by utilizing a very long stroke piston rod whose opposite ends are received in long cylinders. An electric motor which drives the rod, includes a rotor with a threaded aperture that receives a long threaded middle portion of the rod, so that as the rotor turns it advances the rod.
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申请公布号 |
US4145165(A) |
申请公布日期 |
1979.03.20 |
申请号 |
US19770774229 |
申请日期 |
1977.03.04 |
申请人 |
CALIFORNIA INSTITUTE OF TECHNOLOGY |
发明人 |
PERKINS, GERALD S.;MOORE, NICHOLAS R. |
分类号 |
E21B21/01;F04B1/02;F04B17/03;F04B53/14;(IPC1-7):F04B17/04 |
主分类号 |
E21B21/01 |
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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