发明授权
- 专利标题： Excavating and propelling machine for laying pipelines underground
- 专利标题（中）： 挖掘和推进机在地下铺设管道
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申请号： US564525申请日： 1983-12-22
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公开(公告)号： US4534676A公开(公告)日： 1985-08-13
- 发明人: Hiroshi Saito
- 申请人： Hiroshi Saito
- 申请人地址： JPX Tokyo
- 专利权人： Kabushiki Kaisha Komatsu Seisakusho
- 当前专利权人： Kabushiki Kaisha Komatsu Seisakusho
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX57-194011 19821223
- 主分类号： E21D9/087
- IPC分类号： E21D9/087 ; E21B7/00 ; E21B7/20 ; E21B10/42 ; E21B21/12 ; E21D9/06 ; E21D9/08 ; E21D9/11 ; E21D9/12 ; E21D9/13 ; F16L1/00
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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