发明名称 DRILL
摘要 This invention relates generally to improved means for securing a working member within a rotary tool and is described hereinbelow with particular reference to a percussively actuatable striking bar secured by the novel securing means hereof within a percussive rock drilling apparatus.
申请公布号 SE7709660(A) 申请公布日期 1978.03.14
申请号 SE19770009660 申请日期 1977.08.29
申请人 * JOY MANUFACTURING COMPANY 发明人 E A * BAILEY
分类号 B25D17/02;B25D17/08;(IPC1-7):21C3/34 主分类号 B25D17/02
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