| 发明名称 |
BIT FOR BLASTHOLE DRILLING |
| 摘要 |
FIELD: mining, more specifically, bits for blasthole drilling in rocks. SUBSTANCE: bit includes wings provided with hard alloy inserts and shank. Edges are made in form of equidimensional rectilinear sections. Points of edge bending are located on flat curve convex towards face, particularly, on arch circumscribing the circumference edge. EFFECT: simplified bit design. 1 dwg
|
| 申请公布号 |
RU2212510(C2) |
申请公布日期 |
2003.09.20 |
| 申请号 |
RU20010133224 |
申请日期 |
2001.12.06 |
| 申请人 |
OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOST'JU "GOR;OOO GOR |
发明人 |
DVORNIKOV L.T.;PROKUSHENKO S.I.;POLYNTSEV N.A.;VECHUZHANIN D.S.;KALININ V.V. |
| 分类号 |
E21B10/43;E21B10/42;(IPC1-7):E21B10/42 |
主分类号 |
E21B10/43 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
