发明授权
- 专利标题： Shank for an attack tool
- 专利标题（中）： Shank为攻击工具
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申请号： US11927917申请日： 2007-10-30
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公开(公告)号： US08449040B2公开(公告)日： 2013-05-28
- 发明人: David R. Hall , Ronald B. Crockett , Jeff Jepson
- 申请人： David R. Hall , Ronald B. Crockett , Jeff Jepson
- 代理商 Philip W. Townsend, III
- 主分类号： E21C35/183
- IPC分类号： E21C35/183
摘要：
In one aspect of the invention, an attack tool is disclosed which comprises a wear-resistant base suitable for attachment to a driving mechanism. The wear-resistant base has a shank. A cemented metal carbide segment is bonded to the base and the shank has a wear-resistant surface. The wear-resistant surface has a hardness greater than 60 HRc and/or is work hardened.
公开/授权文献
- US20080048484A1 Shank for an Attack Tool 公开/授权日：2008-02-28
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