发明名称 GROUND CORE REMOVING TOOL
摘要 A manually usable turf and ground core cutting, extracting and replacing tool for use by exploratory-minded enthusiasts and collectors of buried metal coins, objects and artifacts having monetary or intrinsic value, as the case may be. It comprises a vertically elongated cylinder whose upper apertured end is provided with suitably convenient handle means and whose lower open end is provided with an annular cutting edge which can be pressed through the turf and forcibly embedded in the selected core taking area of the ground. A tubular plunger member is slidingly and operatively mounted on and in the cylinder and has a projectable and retractable core engaging head. A rod of requisite length is fitted for reciprocation in the hollow portion of the tubular member and is used (1) as an object searching and locating probe and (2) as a guide for the cylinder and plunger assembly.
申请公布号 US3707197(A) 申请公布日期 1972.12.26
申请号 USD3707197 申请日期 1970.10.02
申请人 DAVID J. WALESCH;ALLAN A. MENGLER 发明人 DAVID J. WALESCH;ALLAN A. MENGLER
分类号 E21B11/00;E21B25/00;(IPC1-7):G01N1/00 主分类号 E21B11/00
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