Apparatus and a method for performing a standard penetration test
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United States of America Patent
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Feb 23, 2021
Grant Date -
Sep 13, 2018
app pub date -
Sep 15, 2016
filing date -
Sep 18, 2015
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Abstract
A system for performing a standard penetration test, including a hammer assembly with a hammer and a hammer lifting device, an elevator assembly for raising and lowering the hammer assembly, a hammer sensor for sensing a position of the hammer within the hammer assembly, and an elevator sensor for sensing a position of the hammer assembly relative to the elevator assembly. A method for performing a standard penetration test, including positioning a hammer assembly at a hammer assembly ready position, sensing with an elevator sensor a reference position of a hammer assembly relative to the elevator assembly, sensing with a hammer sensor a zero position of a hammer, lifting the hammer with a hammer lifting device from the zero position to a drop position of the hammer, sensing with the hammer sensor the drop position, and dropping the hammer onto an anvil.
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