发明名称 Safety and protection cap for screwdriver - is placed on stem of screwdriver and slides down over head of screw
摘要 The cap slides onto the stem of the screwdriver and when the tool is inserted in the slot in the screw head the cap slides down so that its lower end fits over the head of the screw. This prevents the screwdriver from sliding out of the slot in the screw head. In the upper part of the cap is a slit one millimetre wide and fifteen to twenty millimetres long, and the lower part of the cap is broader than the upper part. The inside of the cap is shaped like a sugar loaf. ADVANTAGE - Designed to grip the screwdriver stem like tongs.
申请公布号 DE4216920(A1) 申请公布日期 1993.11.25
申请号 DE19924216920 申请日期 1992.05.22
申请人 ZIMMERMANN, FRIEDRICH, 90522 OBERASBACH, DE 发明人 ZIMMERMANN, FRIEDRICH, 90522 OBERASBACH, DE
分类号 B25B23/00;B25B23/10;(IPC1-7):B25B23/08 主分类号 B25B23/00
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