Apparatus for sampling filter layer and method using the same
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United States of America Patent
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Aug 21, 2007
Grant Date -
Jan 13, 2005
app pub date -
Jul 7, 2004
filing date -
Jul 7, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for sampling a filter layer and a method using the same are disclosed herein. The apparatus includes a cylindrical tube made of a transparent material; a screw installed at a central portion in the cylindrical tube, to be rotated for shifting a sample from the lower part to the upper part of the cylindrical tube, and a rotary operating unit fixed to the upper end of the screw for rotating the screw, wherein the cylindrical tube is provided with a scale formed on its outer circumference and a protective cap combined with the lower end for smoothly excavating the filter layer and preventing the damage of the cylindrical tube. The apparatus further lower case a fixed supporter on the upper end of the screw and a supporting hand lever protruding from one side of the fixed supporter to be pressed by a worker with force required for excavation.
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