发明名称 Connection bolt for repeated tightening beyond yield point
摘要 A connection bolt (1) for repeated tightening beyond yield point which bolt (1) comprises a head (2) and a shank which shank is provided with a thread, whereby said head (2) of said connection bolt (1) is provided with at least one indication mark (9) at a fixed defined mutual angle position to at least one indication sign (10), which sign (10) is provided on the free shank (5) end relative to the axis (q-q) of the bolt (1) rotation. This system of marking allows to determine the damage of said bolt (1) exactly and to decide about further ability of said bolt (1) to be used next time without any risk of destruction or decrease in quality of a joint.
申请公布号 US6402447(B1) 申请公布日期 2002.06.11
申请号 US20000602359 申请日期 2000.06.22
申请人 SKODA AUTO A.S. 发明人 BABAK JAN
分类号 F16B35/00;F16B1/00;F16B23/00;F16B31/02;F16B35/04;F16B35/06;(IPC1-7):F16B3/102 主分类号 F16B35/00
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