发明名称 |
Screw for Composite/Plastic Materials |
摘要 |
A fastener for composite or plastic material having a dense composition employs a head which has a socket and a recessed underside and a lower rim. In one embodiment, the shank has an upper portion with an enlarged diameter and a left hand thread while the lower portion has a tri-lobed configuration and is traversed by a right hand thread. The right hand thread may have a plurality of notches which, in one embodiment, are arranged in a spiral array. |
申请公布号 |
US2014044500(A1) |
申请公布日期 |
2014.02.13 |
申请号 |
US201314057031 |
申请日期 |
2013.10.18 |
申请人 |
PIECIAK, JR. JOSEPH A.;BELINDA RICHARD L.;BARENSKI PETER;WEISS TAD A. |
发明人 |
PIECIAK, JR. JOSEPH A.;BELINDA RICHARD L.;BARENSKI PETER;WEISS TAD A. |
分类号 |
F16B25/00;F16B35/06 |
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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