发明名称 |
FASTENER&FASTENING SYSTEM |
摘要 |
<p>The present invention utilises impact-driven fastener (1) having a twisted body having: a common axial core (2) a protruding helix (3) and a trailing elongate lost-end driving shank: (4) of reduced radial diameter. The fastener incorporates two or three loosely wound loosely wound thread-cutting blade-like helical projections (5) extending radially from a solid axial core (2). These blade-like projections (5) are inclined upon a sweeping helical angle (8) of less than 42° to the longitudinal axis (9) of the core (2). The elongate shank (4), which carries no swept angle thread-cutting blades, has a reduced cross sectional diameter that is approximately one half or less of a cross-sectional circumscribed diameter (7) of a protruding helix (3), from which it extends coaxially, such as to fit into and cooperate with a driving adapter (21) having a hollow leading end (24), said leading end of a driving adapter having an external diameter that is less than a cross-sectional circumscribed diameter (7) of the fastener (1).</p> |
申请公布号 |
EP2032863(B1) |
申请公布日期 |
2015.07.08 |
申请号 |
EP20070700349 |
申请日期 |
2007.01.10 |
申请人 |
OLLIS, WILLIAM HENRY;CHADWICK, DAVID, JAMES |
发明人 |
OLLIS, WILLIAM HENRY;CHADWICK, DAVID, JAMES |
分类号 |
B25D17/00;B25B13/06;B25B15/00;B25B23/00;E04B1/41;E04G23/02;F16B15/06;F16B23/00;F16B25/00;F16B25/10 |
主分类号 |
B25D17/00 |
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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