Water turbine with variable buoyancy
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United States of America Patent
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Nov 27, 2018
Grant Date -
Jun 9, 2016
app pub date -
Jun 27, 2014
filing date -
Jun 27, 2013
priority date (Note) -
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Abstract
A floatable turbine (10) is described, which is movable on a substantially vertically oriented guide (20) so that the turbine (10) may move downwards along the guide (20) under gravitational force. The turbine equipment (10) is of negative buoyancy to facilitate it sinking, but is further provided with adjustable buoyancy means to allow the turbine arrangement to be imparted with a positive buoyancy when required. When imparted with a positive buoyancy the turbine equipment (10) floats back up the vertically oriented guide (20) under the buoyancy force. When moving down the guide (20) under gravity, and back up the guide (20) under buoyancy force an effective artificial current is generated by the movement through the turbine blades, turning the blades which in turn cause a generator to produce electricity, typically by suitable gearing.
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