发明名称 |
Excavating and propelling machine for laying pipelines underground |
摘要 |
An excavating and propelling machine for laying pipelines underground has a plum-pudding stone crusher device comprising a plurality of rod-shaped rotary teeth formed integrally on the rear face of a disk-shaped rotating cutter head in a manner of extending radially at uniform intervals spaced apart from one another and a plurality of rod-shaped stator teeth formed integrally on the front surface of an annular front face plate in a manner of extending radially at uniform intervals space apart from one another. The rotary teeth and the stator teeth are disposed in the vicinity of each other.
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申请公布号 |
US4534676(A) |
申请公布日期 |
1985.08.13 |
申请号 |
US19830564525 |
申请日期 |
1983.12.22 |
申请人 |
KABUSHIKI KAISHA KOMATSU SEISAKUSHO |
发明人 |
SAITO, HIROSHI |
分类号 |
E21D9/087;E21B7/00;E21B7/20;E21B10/42;E21B21/12;E21D9/06;E21D9/08;E21D9/11;E21D9/12;E21D9/13;(IPC1-7):F16L1/00 |
主分类号 |
E21D9/087 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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