发明授权
- 专利标题: Cutters for use in mineral mining
- 专利标题(中): 用于矿产开采的刀具
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申请号: US761852申请日: 1985-08-02
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公开(公告)号: US4637658A公开(公告)日: 1987-01-20
- 发明人: Wolfgang Annipajo , Oswald Breuer , Christoph Rassmann
- 申请人: Wolfgang Annipajo , Oswald Breuer , Christoph Rassmann
- 专利权人: Wolfgang Annipajo,Oswald Breuer,Christoph Rassmann
- 当前专利权人: Wolfgang Annipajo,Oswald Breuer,Christoph Rassmann
- 优先权: DEX3433277 19840911
- 主分类号: E21C27/44
- IPC分类号: E21C27/44 ; E21C35/18 ; E21C35/183 ; E21B10/00
摘要:
A floor cutter bit for a coal plough has a body carrying a pair of hard metal plates which define a coal face cutting edge and a floor cutting edge. A hard metal pin locates between the plates and receives end zones of the plates within recesses.
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