发明名称 PERCUSSIVE ACTION PNEUMATIC DEVICE FOR DRILLING HOLES IN SOIL
摘要 <p>PERCUSSIVE ACTION PNEUMATIC DEVICE FOR DRILLING HOLES IN SOIL The percussive action pneumatic device for drilling holes in a soil by compacting same has a cylinder-shaped housing with a conically pointed head portion. This pointed head portion of the housing is engaged in the internal surface of the tail portion of a hollow tip with a pointed end. A transverse partition is provided internally of the hollow tip, in the tail portion thereof, the head portion of the housing being detachably connectable with said transverse partition.</p>
申请公布号 CA1079712(A) 申请公布日期 1980.06.17
申请号 CA19780294543 申请日期 1978.01.09
申请人 INSTITUT GORNOGO DELA SIBIRSKOGO OTDELENIA AKADEMII NAUK SSSR 发明人 KOSTYLEV, ALEXANDR D.;CHEPURNOI, NIKOLAI P.;PLAVSKIKH, VLADIMIR D.;CHEREDNIKOV, EVGENY N.
分类号 (IPC1-7):21B1/06 主分类号 (IPC1-7):21B1/06
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