Hybrid wind-hydro power plant
Patent 6023105 Issued on February 8, 2000. Estimated Expiration Date: 
March 24, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 24, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 504301 1835018 2962599 3803422 3918839 Solar radiation collector and system for converting and storing collected solar energy Wave-powered, pivoted float pumping system with increasing opposition to extreme movement of lever arm Wind wheel apparatus for use with a hydro-electric dam Hydro electric generating system Adjustable draft tube InventorApplicationNo. 828728 filed on 03/24/1997US Classes:290/54, FLUID-CURRENT MOTORS290/44WindExaminersPrimary: Ponomarenko, NicholasInternational ClassH03B 013/00AbstractExplained herein is a method and equipment whereby windmills are used to directly propel water pumps to lift water from a lower elevation body of water to a nearby higher elevation body of water, where it is stored as potential energy.In one application of this method, one or more water pumps, each powered directly by a windmill, lift water from downstream of a river, stream, or creek to upstream of a dam at which a hydropower plant is installed. The windmill may be of the vertical-axis or horizontal. Upon demand, the lifted water is used to generate electricity utilizing the hydropower plant. An adjustable weir is constructed across the river, stream, or creek downstream the windmill, whose function is to create a reservoir or pool from which water can be pumped and to regulate the flow of water downstream. The adjustable weir can be raised or lowered by means of a jack or jacks that are controlled by a computer. In another application of this invention, one or more water pumps, each powered directly by a windmill is installed at sites having 2 nearby bodies of water, one higher than the other. The bodies of water may be natural or artificial. The water pump lifts water from the low water to the high water, where it is stored as potential energy. Upon demand, the lifted water can be used to generate electricity utilizing a conventional hydropower plant.Other References
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