发明名称 |
INSERT BIT FOR USE WITH A POWERED SCREWDRIVER |
摘要 |
The present invention relates to the field of insert bits (10) for use with powered screwdrivers. The formed bits (10) may be treat ed to have a desired microstructure by either an austempering process or by the th ree step heating, quenching, tempering process. The bit s (10) may also be electro-polished. Austempering provides for improved function a nd increased fatigue life and electro-polishing provides for improved function and increased fatigue life and torque capacity. The bits (10) may have reduced diameter midportions (30), particu larly for use with impact drivers.
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申请公布号 |
CA2181483(C) |
申请公布日期 |
2004.11.16 |
申请号 |
CA19942181483 |
申请日期 |
1994.01.26 |
申请人 |
VERMONT AMERICAN CORPORATION |
发明人 |
FAUST, JAMES AARON;CHANTON, MARZELL;SHUMAKER, CARL A. |
分类号 |
B23P15/00;B25B15/00;B25B21/00;B25B23/00;B25B23/14;B25B23/142;(IPC1-7):B25B15/00 |
主分类号 |
B23P15/00 |
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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