发明名称 |
Magnetic bit holder and hand tool incorporated same |
摘要 |
A hand tool has an elongated shank with a handle at one end and a bit holder at the other end, the bit holder including a cylindrical body having a distal end surface and an axis, the body having an axial bore formed in the end surface of non-circular transverse cross section and terminating at an inner end surface. A neodymium permanent magnet is freely received in the bore and retained against the inner end surface by a thin circular retainer, formed of metal or plastic, which is interference-fitted in the bore. Both flat, disk-like and concave, bowl-shaped retainers are disclosed. A shock-absorbing cushion may be disposed between the magnet and the inner end surface of the bore. A bit formed of magnetizable material is mateably received in a socket portion of the bore and retained in place by the magnet. The portion of the bore receiving the magnet may have a different cross section from the socket portion. The magnet may be disposed in an encapsulation which interference fits in the bore.
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申请公布号 |
US5603248(A) |
申请公布日期 |
1997.02.18 |
申请号 |
US19960593396 |
申请日期 |
1996.01.29 |
申请人 |
SNAP-ON TECHNOLOGIES, INC. |
发明人 |
EGGERT, DANIEL M.;MIKIC, FRANK |
分类号 |
B25B15/02;B25B23/00;B25B23/12;(IPC1-7):B25B13/02 |
主分类号 |
B25B15/02 |
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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