The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 2007
Filed:
Jul. 07, 2004
Jin-dal Jung, Daejeon, KR;
Oen-ho Shin, Daejeon, KR;
Kyo-nam Choi, Daejeon, KR;
Byoung-geun OH, Daejeon, KR;
Jin-Dal Jung, Daejeon, KR;
Oen-Ho Shin, Daejeon, KR;
Kyo-Nam Choi, Daejeon, KR;
Byoung-Geun Oh, Daejeon, KR;
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.