发明名称 Interlocking screw and screwdriver
摘要 A screwdriver and mating screw are shown with interlocking features for coupling with one another to facilitate driving the screw into a workpiece. The screwdriver includes a handle and a blade with an engagement flange on the outer extremity of the blade. The engagement flange engages a complementary recess provided in the head of the mating screw, the recess including a downwardly facing shoulder. A coupling sleeve mounted on the blade exerts an axially directed force on the screw once the engagement flange and complementary recess are engaged to thereby interlock the screwdriver and mating screw.
申请公布号 US4936172(A) 申请公布日期 1990.06.26
申请号 US19890321147 申请日期 1989.03.09
申请人 JACKSON, JACK D. 发明人 JACKSON, JACK D.
分类号 B25B15/00;F16B23/00 主分类号 B25B15/00
代理机构 代理人
主权项
地址