FALLING WEIGHT DEFLECTOMETER
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United States of America Patent
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app pub date -
Oct 23, 2013
filing date -
Oct 11, 2013
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Abstract
A falling weight deflectometer is disclosed. The falling weight deflectometer includes a load plate adapted to engage a test surface, a force transmitter adapted to transmit a force to the load plate, a buffer, and a weight adapted to impact the force transmitter via said buffer so as to provide a force to be transmitted to the load plate via the force transmitter. A guide is included for guiding the weight towards the force transmitter, and a lifting device is included for lifting the weight to a height above the force transmitter. The lifting device includes an electric motor to drive a threaded spindle in engagement with the weight.
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