发明名称 |
CORE CATCHER |
摘要 |
FIELD: mining industry, means catching and holding core. SUBSTANCE: given core catcher includes thin-walled cylinder which one end has conical shape and through grooves forming tabs of gripper of rectangular form. Internal surfaces of tabs have horizontal knurls which form sawtooth shape in crosssection. Relation of width of tab to width of groove amounts to 0.6-0.8. Relation of width of tab to length of tab is 0.2- 0.4. EFFECT: raised reliability of core catching. 2 dwg
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申请公布号 |
RU2219325(C2) |
申请公布日期 |
2003.12.20 |
申请号 |
RU20010135349 |
申请日期 |
2001.12.27 |
申请人 |
SPETSIAL'NOE KONSTRUKTORSKOE BJURO PO GEOLOGORAZV;EDOCHNOJ TEKHN SKB GEOTEKHNIKA;SPK BJURO GEOLOGORAZV |
发明人 |
ORLOV V.I.;SOROKIN V.F.;PANIN N.M. |
分类号 |
E21B25/12;(IPC1-7):E21B25/12 |
主分类号 |
E21B25/12 |
代理机构 |
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