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Positive displacement hydro pumpRelated Patent Categories: Pumps, Motor Driven, Spring Or Weight Motor, Fluid Weight (e.g., Gravity Vessel)Positive displacement hydro pump description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20080014100, Positive displacement hydro pump. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001] This application claims the benefit of U.S. Provisional Application No. 60/817,983, filed Jun. 30, 2006, and entitled Positive Displacement Hydro Pump, and which is incorporated herein by reference in its entirety. DISCLOSURE DOCUMENT INCORPORATED BY REFERENCE [0002] This application claims all benefits of Disclosure Document Number 556374, entitled "Lyons Hydro Motor," by inventor Norman V. Lyons, which was received by the United States Patent and Trademark Office on Jul. 6, 2004, and which is fully and completely incorporated herein by reference. FIELD OF THE INVENTION [0003] This invention generally relates to the pumping of liquids from one location to another for various purposes, and more particularly, to a positive displacement hydro pump for pumping liquids from a region of high pressure to a region of low pressure. BACKGROUND [0004] Pumps are used to move liquids from one location to another, such as liquids residing in a state of rest or near rest such as in tanks, reservoirs, lakes, and the like. The term "liquid" will be used hereafter to represent any other liquid for which the pump may be useful (water, oil, and the like). Consequently, the term "hydro" will have the same connotation. The resultant flow of liquid generated by the Lyons hydro motor pump ("Lyons hydro motor") can be used for many purposes, e.g., water to a residential or commercial building, irrigation, generation of electricity, and the like. [0005] Currently there are many ways of creating electricity. A great majority utilize non-renewable energy sources, such as natural gas, oil, coal, and the like, to supply power to turbines which turn generators that produce electricity. This results in worldwide pollution of many sorts. Other methods such as wind and solar do not pollute as much but are subject to the uncertainties of nature and location limitation, availability. Hydropower electric generation facilities, while considered by many as being highly environmentally friendly, require the use of huge amounts of water from dams and reservoirs. This often results in wasted water, damage to fish populations and shortages of domestic and irrigation water. New dams are not likely to be constructed for many years. Other methods utilizing water wave action, water wheels, diaphragms, etc., limit location and have other restrictive constraints. [0006] Atomic energy presents a multitude of potential catastrophic consequences in case of failure and waste disposal. It has also presented a multitude of possible catastrophic consequences involving radiation, meltdown and waste disposal. New plants are not likely to be built for many years, if then. In some installations "waste" water is stored in a reservoir below the dam until "off peak" hours (the lower electricity demand hours). It is then pumped back up to the original source by energizing the generators, which then become motors that drive huge pumps. This practice is inefficient and in fact costly, due to the added cost of electricity and increased maintenance of the generators. It would therefore be desirable to provide a hydro pump that can be used to generate electricity. SUMMARY OF THE INVENTION [0007] The present invention solves the aforementioned problems by providing a method and apparatus for efficiently pumping liquids [0008] In one embodiment, a pressure-powered liquid pump is provided. Within this embodiment, the liquid pump is submerged in a liquid and includes a cylindrical housing having opposite ends and a center axis perpendicular to the opposite ends. The liquid pump further includes an actuator configured to move along the center axis. The liquid pump also includes a first and second intake assembly coupled to the actuator and respectively proximate to the opposite ends of the housing, as well as a first and second discharge assembly which are also coupled to the actuator and respectively proximate to the opposite ends of the housing. For this embodiment, at least one discharge conduit is coupled to the housing and extends to an atmosphere external to the liquid. The liquid pump has a piston coupled to the actuator and configured to slide along the actuator so as to create a first chamber within the housing having a first variable pressure, and a second chamber within the housing having a second variable pressure, such that the first variable pressure and the second variable pressure vary according to the positioning of the piston along the actuator. [0009] In another embodiment of the invention, a method for pumping liquid is provided. This method includes submerging a cylindrical housing in a liquid. The cylindrical housing for this method has opposite ends and a center axis perpendicular to the opposite ends, such that an actuator is configured to move along the center axis. A first and second intake assembly is coupled to the actuator and respectively proximate to the opposite ends of the housing. A first and second discharge assembly are also coupled to the actuator and respectively proximate to the opposite ends of the housing. The housing also includes at least one discharge conduit which extends to an atmosphere external to the liquid. Within this embodiment, a piston is coupled to the actuator and configured to slide along the actuator so as to create a first chamber within the housing having a first variable pressure, and a second chamber within the housing having a second variable pressure. And finally, the method also includes the step of maintaining the cylindrical housing at an optimal depth, so as to create an oscillation between the first variable pressure and the second variable pressure, such that the first variable pressure and the second variable pressure oscillate inversely proportional to each other. [0010] These and other aspects, features, and advantages of the present invention will become apparent from a consideration of the following specification and the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS [0011] FIG. 1A is a cross-sectional schematic of a hydro pump showing an open end and a closed end in accordance with the present invention. [0012] FIG. 1B is a cross-sectional schematic of a hydro pump illustrating a transitional stroke in accordance with the present invention. [0013] FIG. 1C is an external cross-sectional end-view of a hydro pump in accordance with the present invention. [0014] FIG. 1D is an internal cross-sectional end-view of a hydro pump in accordance with the present invention. [0015] FIG. 2 is a three-dimensional illustration of a hydro pump in accordance with the present invention. [0016] FIG. 3 is a cross-sectional schematic of a hydro pump with an anti-stall spring in accordance with the present invention. DETAILED DESCRIPTION [0017] One embodiment of the present invention provides a hydro motor pump that does not require, consume or utilize external fuel of any kind. Instead, the hydro motor pump is energized by the weight of the water in which it is submerged. This `latent` energy expressed as pounds per square inch (PSI) exists at all levels of water everywhere water exists on earth. The PSI increases by approximately 0.434 PSI per foot of depth and exerts that force in all directions from any given point. By harnessing the pressurized force of the surrounding water, the hydro motor pump provides a pollution-free solution that conserves water and may enhance electrical generation, irrigate land, and provide many other benefits. [0018] The hydro motor pump essentially captures the pressure (PSI) of surrounding water, causing it to bear against a piston, which is free to slide longitudinally inside a tube (the pump housing). A conduit of smaller diameter than the tube is rigidly attached to the end of said housing, and is directed upward to and beyond the surface of the water in which the piston and its housing are submerged. Thus, the liquid in such conduit is exposed only to atmospheric pressure at its uppermost end, not submergence depth pressure. Continue reading about Positive displacement hydro pump... 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