发明名称 High-impact Resistant Tool
摘要 A high impact resistant tool comprises a steel shank. The steel shank has a hollow portion and first and second ends. The shank is adapted for insertion into a holder and connection to a driving mechanism. A carbide cap is joined at a brazed joint to the first end of the shank.
申请公布号 US2008258536(A1) 申请公布日期 2008.10.23
申请号 US20080146665 申请日期 2008.06.26
申请人 发明人 HALL DAVID R.;CROCKETT RONALD;JEPSON JEFF
分类号 E21C35/18;E21C35/19 主分类号 E21C35/18
代理机构 代理人
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