发明名称 |
Spanner with prevention of disengagement of fasteners |
摘要 |
A spanner comprises a box end that has an inner periphery consisting of a number of wall faces to define a first polygonal receiving space. Each wall face includes a groove defined therein. The grooves of the wall faces together define a second polygonal receiving space. At least one of the grooves includes a closed first end and an open second end.
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申请公布号 |
US2003121373(A1) |
申请公布日期 |
2003.07.03 |
申请号 |
US20020295368 |
申请日期 |
2002.11.15 |
申请人 |
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发明人 |
LING DAVID;TUAN-MU HSIEN-CHUNG |
分类号 |
B25B13/04;B25B13/06;B25B23/00;(IPC1-7):B25B13/46 |
主分类号 |
B25B13/04 |
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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