发明名称 |
Chuck sleeve insert for a drill |
摘要 |
A double-ended drill bit having opposed cutting ends of different structural configurations is provided in combination with a sleeve or holder to be received within a drill chuck. The sleeve is provided with a cylindrical body having a top end with a pair of helically-shaped longitudinally extending members in spaced mating relation attached thereto. One cutting end of a drill bit is received within the cylindrical body and the spaced helically-shaped members.
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申请公布号 |
US5704745(A) |
申请公布日期 |
1998.01.06 |
申请号 |
US19960707766 |
申请日期 |
1996.09.04 |
申请人 |
CREDO TOOL COMPANY |
发明人 |
WIKER, JUERGEN;BYRLEY, DAVID H.;LOCKHART, JR., ZANE;NEWHOUSE, DEBBIE ANN;PHILLIPS, GREGORY A. |
分类号 |
B23B31/00;B23B51/02;(IPC1-7):B23B51/02 |
主分类号 |
B23B31/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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