发明名称 |
Coated threaded fasteners |
摘要 |
This invention relates to threaded fasteners, an apparatus for making such threaded fasteners and methods of fastening parts. The tip of the shank of a threaded fastener has at least one thread coated with a lubricating or masking material to reduce the drive torque necessary for fastening as well as provide a protective coating for the fastener during subsequent processing operations. The drill tip of the disclosed self-drilling fasteners is coated with a lubricating material to reduce drive torque and to eliminate binding when drilling through fibrous material. The present invention also prevents the build-up of corrosion inhibiting materials on threaded fasteners attached to parts to be fastened together. A masking and/or insulating material is first applied to the threaded fasteners attached to the parts to substantially prevent applied corrosion inhibitor from adhering to the threads of the fastener. A method of fastening parts, including fibrous material such as carpet or sound insulation, is also accomplished through practice of the present invention. The apparatus of the present invention provides a resin type stream entrained in a gaseous jet directed through a nozzle onto the threads of a fastener. The apparatus provides selectable thread coverage, including complete coverage of all threads.
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申请公布号 |
US5221170(A) |
申请公布日期 |
1993.06.22 |
申请号 |
US19910716761 |
申请日期 |
1991.06.18 |
申请人 |
NYLOK FASTENER CORPORATION |
发明人 |
DUFFY, RICHARD J.;DUDLEY, JOSEPH R.;FRUEHE, GREGORY A.;DORFLINGER, MAX F. |
分类号 |
B05B13/06;B05D1/02;B05D3/02;B05D7/22;F16B33/06;F16B39/22;F16B39/34 |
主分类号 |
B05B13/06 |
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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