发明授权
- 专利标题: Lifting and crushing apparatus for tree stumps
- 专利标题(中): 树桩起重破碎设备
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申请号: US509047申请日: 1990-04-13
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公开(公告)号: US5080151A公开(公告)日: 1992-01-14
- 发明人: Olli Pallari
- 申请人: Olli Pallari
- 专利权人: Olli Pallari
- 当前专利权人: Olli Pallari
- 主分类号: A01G23/06
- IPC分类号: A01G23/06 ; E02F3/96
摘要:
A stump lifting and crushing device for mounting to an end of a bucket arm of a digging machine includes stump lifting hooks and a bit pivotally closable with a counter bit for crushing stumps therebetween. The bit has an elongated narrow cutting surface which cooperates with an aligned counter surface provided by the counter bit. The counter surface extends transversely across the width of the cutting surface of the bit. The closing movement of the bits is limited by the cam-like engagement of a following member of the bit with a stop member of the counter bit.
公开/授权文献
- US4639886A Arithmetic system having pipeline structure arithmetic means 公开/授权日:1987-01-27
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