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10/23/08 - USPTO Class 417 |  30 views | #20080260550 | Prev - Next | About this Page  417 rss/xml feed  monitor keywords

Deep well irrigation pump

USPTO Application #: 20080260550
Title: Deep well irrigation pump
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. (end of abstract)



USPTO Applicaton #: 20080260550 - Class: 417390 (USPTO)

Deep well irrigation pump description/claims


The Patent Description & Claims data below is from USPTO Patent Application 20080260550, Deep well irrigation pump.

Brief Patent Description - Full Patent Description - Patent Application Claims
  monitor keywords CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of priority to U.S. Application No. 60/519,887, filed Nov. 14, 2003, the entire disclosure of which is hereby incorporated by reference as if set forth at length herein.

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not applicable

REFERENCE OF A “MICROFICHE APPENDIX”

Not applicable

FIELD OF THE INVENTION

The present invention relates generally to pumping devices.

BRIEF DESCRIPTION OF THE DRAWINGS

Exemplary embodiments of the present invention are now briefly described with reference to the following drawings:

FIG. 1 depicts one aspect of the present invention in accordance with the teachings presented herein.

FIG. 2 depicts a second aspect of the present invention in accordance with the teachings presented herein.

FIG. 3 depicts a third aspect of the present invention in accordance with the teachings presented herein.

FIG. 4 depicts a fourth aspect of the present invention in accordance with the teachings presented herein.

FIG. 5 depicts a fourth aspect of the present invention in accordance with the teachings presented herein,

FIG. 6 depicts a fourth aspect of the present invention in accordance with the teachings presented herein



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Patent Applications in related categories:

20090285700 - Low rate hydraulic artificial lift - In an embodiment of the invention, a down-hole pump comprises a hydraulic chamber having a passage for fluid communications with a hydraulic conduit, a produced fluid chamber having an inlet and an outlet, a first check valve associated with the inlet, a second check valve associated with the outlet, a ...


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Previous Patent Application:
Chemical liquid supplying apparatus
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Rolling diaphragm pump
Industry Class:
Pumps

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