Self-powered irrigation apparatus
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United States of America Patent
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May 31, 2016
Grant Date -
Apr 9, 2015
app pub date -
Oct 8, 2013
filing date -
Oct 8, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
An irrigation apparatus is provided, comprising: a pressure vessel configured to hold water under pressure, and configured to expand and contract based on the pressure of the held water; a selectable throttle configured to receive water at a first pressure, configured to provide the water to the pressure vessel at the first pressure when the selectable throttle is at a first setting, and configured to provide the water to the pressure vessel at a second pressure that is smaller than the first pressure when the selectable throttle is at a second setting; a control circuit configured to control whether the selectable throttle is at the first setting or at the second setting; and a piezoelectric element attached to the pressure vessel and configured to generate electricity when the pressure vessel expands or contracts.
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