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公开(公告)号:US4637658A
公开(公告)日:1987-01-20
申请号:US761852
申请日:1985-08-02
IPC分类号: E21C27/44 , E21C35/18 , E21C35/183 , E21B10/00
CPC分类号: E21C27/44 , E21C35/183 , E21C2035/1809 , E21C2035/1816
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.
摘要翻译: 用于煤犁的地板铣刀具具有承载一对硬金属板的主体,其限定煤面切削刃和地板切削刃。 硬金属销位于板之间并且在凹槽内接收板的端部区域。