发明名称 |
Thread tapping form. |
摘要 |
An improved thread tapping form is used to form an internal thread convolution in a member. The thread tapping form includes a plurality of projections which are disposed on a shank having a circular cross sectional configuration. Each of the thread forming projections includes a leading section which parts the material of the member to initiate formation of the flanks of the internal thread convolution. A side section of each thread forming projection presses against the flanks of the internal thread convolution to further form the flanks. A trailing section of each projection supports the side and leading sections of the projection. |
申请公布号 |
EP0024528(A2) |
申请公布日期 |
1981.03.11 |
申请号 |
EP19800104146 |
申请日期 |
1980.07.16 |
申请人 |
RUSSELL, BURDSALL & WARD CORPORATION |
发明人 |
CAPUANO, TERRY D. |
分类号 |
F16B25/06;F16B25/00;(IPC1-7):F16B25/00 |
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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