发明名称 |
WELDLESS BUILDING STRUCTURES |
摘要 |
A building structure including a first building member and a second building member may be connected by a plurality of fasteners, each fastener having a head, a threaded portion having a through hardness of between HRB 70 and HRC 40, a thread-forming portion of at least HRC 50 hardness enabling the fastener to form threads in at least the second steel building member, and a fluted lead portion of at least HRC 50 hardness with a nominal diameter between 70 and 95% of major diameter, such that the fastener is capable of providing a ratio of strip torque to thread-forming torque of at least 3.0 and a ratio of strip torque to drive torque greater than 6.0 when the second steel building member having a thickness of 0.25 inch and the fluted lead portion having at least one diameter within nominal diameter between 80 and 98% of major diameter. |
申请公布号 |
CA2784843(A1) |
申请公布日期 |
2011.08.25 |
申请号 |
CA20112784843 |
申请日期 |
2011.02.19 |
申请人 |
NUCOR CORPORATION;ASIA FASTENING (US), INC. |
发明人 |
DAYTON, LIONEL E.;LUKES, RICHARD |
分类号 |
E04B1/348;E04B1/58;F16B25/02;F16B25/10 |
主分类号 |
E04B1/348 |
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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