公开(公告)号：WO2005050022A1

公开(公告)日：2005-06-02

申请号：PCT/US2004/038130

申请日：2004-11-15

Applicant: APPRO TEC USA

Inventor： 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

IPC: F04B53/12

CPC classification number: F04B53/12 ,  F04B47/026

Abstract: 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.

Abstract translation: 本文提供了一种有效的泵装置的示例性实施例。 在一个实施例中，泵装置包括松动地设置在气缸内的活塞组件。 活塞组件包括连接顶部泄漏活塞和具有连接到其上的止回阀的底部泄漏活塞的驱动缆索。 气缸在其上部包括出口管和位于气缸的下端的止回阀。 活塞以相对于导管的速度在气缸中移动，使得当活塞沿着气缸移动时，其产生大致曲折的泄漏路径，在活塞和气缸之间形成流体动力学密封。