Original document(22 pages)  中文版
    Provided herein are exemplary embodiments of an efficient pump apparatus. In one embodiment the pump apparatus comprises a piston assembly loosely disposed within a cylinder. The piston assembly includes a driving cable connecting a top leaky piston and a bottom leaky piston having a check valve connected thereto. The cylinder includes an outlet pipe at an upper portion thereof and a check valve located at a lower end of the cylinder. The pistons move in the cylinder at a velocity relative to the conduit such that as the pistons move along the cylinder they create a substantial tortuous leak path forming a hydrodynamic seal between the pistons and the cylinder.
Application Number
申请号		 200480040449 Application Date
申请日		 2004.11.15
Title 名称 Deep well irrigation pump
Publication Number
公开号		 1950605 Publication Date
公开日		 2007.04.18
Approval Pub. Date Granted Pub. Date
International Classification 分类号 F04B53/12
Applicant(s) Name
申请人		 Cakestar International Inc.
Address 地址
Inventor(s) Name 发明人 Fisher Martin J.;Carlson Lawrence E.;Tarbell Ben;Kaplan Jonathan I.;Yom-tov Opher Doron;Adler Ari T.;Kurjan Christine M.;Lister Robert Ian;Banerjee Shilajett;Swaleh Mohammed;Spybey Alan C.;Musa Abdilkadir Mohammed
Attorney & Agent 代理人 yantao zhengxia
More information 更  多  信  息


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