发明名称 |
Tapping screw |
摘要 |
A tapping screw fastened to a subject member in which a thread portion formed in a shaft portion of the tapping screw is used to form a female screw thread in a prepared hole of the subject member. An angle of a thread ridge is approximately 30 degrees, a plurality of notches are formed in a top portion of the thread portion over a predetermined range of an entire length of the shaft portion, and a joint portion for connecting the top portion and a bottom portion of the thread portion is formed to have a circular arc shape in an area having a smaller diameter than a diameter of the prepared hole of the subject matter, as viewed in a cross section including a shaft center of the tapping screw. |
申请公布号 |
US7160073(B2) |
申请公布日期 |
2007.01.09 |
申请号 |
US20040948086 |
申请日期 |
2004.09.23 |
申请人 |
AOYAMA SEISAKUSHO CO., LTD. |
发明人 |
MIZUNO HIROMICHI;KOZAWA MITSURU;YAMADA KENYA |
分类号 |
F16B25/06;F16B25/10;F16B25/00;F16B33/02 |
主分类号 |
F16B25/06 |
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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