Vehicle speed detection means for power generation system
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United States of America Patent
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Jun 25, 2013
Grant Date -
Apr 14, 2011
app pub date -
Jan 27, 2010
filing date -
Jan 27, 2009
priority date (Note) -
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Abstract
A vehicle energy harvester including a subunit having an upper surface forming a roadway surface; a vehicle activated treadle on the subunit, the vehicle activated treadle moveable between a first position in which an upper surface of the treadle is at an angle with respect to the upper surface of the roadway surface and a second position in which the upper surface of the treadle is flush with the upper surface of the roadway surface; a generator that generates power in response to movement of the vehicle activated treadle; and a vehicle speed detection device that detects a speed of a vehicle travelling over the roadway surface based on a speed of movement of the vehicle activated treadle.
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