发明名称 Distance screw
摘要 <p>The spacer screw has a sharp tip (10) and has a shank, which is sub-divided into a threaded tip zone (A), a center smooth shank zone (B), and a threaded zone (C) near the head of the screw. The diameter of the zone near the head of the screw is wider than that of the tip zone. The tip zone thread has a thread cutting cam and especially two to six strengthening ribs (6) parallel to the shank (8). The radius of the strengthening ribs is less than that of the cutting cam.</p>
申请公布号 EP1193407(B1) 申请公布日期 2003.12.17
申请号 EP20010119664 申请日期 2001.08.22
申请人 BERNER GMBH 发明人 HOELTERHOFF, KARL FR.;LOEFFLER, RALF
分类号 F16B25/10;F16B33/02;F16B35/04;(IPC1-7):F16B35/04 主分类号 F16B25/10
代理机构 代理人
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