发明名称 |
BEVESTIGINGSMIDDEL. |
摘要 |
A fastener unit for clamping plastic material having a first predetermined thickness to a relatively thin sheet metal support having a second predetermined thickness. The fastener unit includes a spacer collar having a length substantially equal to the first predetermined thickness, the plastic having a hole to receive the collar. The collar surrounds the upper portion of a threaded shank and the end abuts the sheet metal. The spacer collar has an internal diameter which forms a gap with the threads of a size approximately equal to the second predetermined thickness. As the fastener is threadingly advanced into the sheet metal, the end of the collar serves as a fulcrum about which the threads bend the material which forms the edge of the hole into the gap increasing the stripping torque of the fastener unit. |
申请公布号 |
NL8000250(A) |
申请公布日期 |
1980.07.29 |
申请号 |
NL19800000250 |
申请日期 |
1980.01.15 |
申请人 |
ILLINOIS TOOL WORKS INC. TE CHICAGO, ILLINOIS, VER. ST. V. AM. |
发明人 |
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分类号 |
F16B25/00;F16B31/02;F16B39/26;F16B39/282;F16B43/00;(IPC1-7):16B5/02;16B43/02;16B35/04 |
主分类号 |
F16B25/00 |
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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