发明名称 Positioning apparatus for hand tool
摘要 A positioning apparatus for hand tool includes a shank, a driving head, a switch, and a positioning device. The shank has a connecting end having a receiving space and a slot communicated with the receiving space. The driving head has multiple positioning holes. The switch includes a screw. The positioning device is received in the receiving space. The positioning device includes a spring, a pusher, and a base. The base is received in the receiving space. The base has a recess for receiving the spring and the pusher and a slot communicated with the recess. The spring has one end abutting against a bottom of the recess and the other end abutting against the pusher. The screw passes the switch and fastens with the pusher via the slot in the shank and the slot in the base. The pusher selectively engages with one of the multiple positioning holes.
申请公布号 US7992471(B2) 申请公布日期 2011.08.09
申请号 US20090471402 申请日期 2009.05.24
申请人 TSAI MING-CHING 发明人 TSAI MING-CHING
分类号 B25B23/16 主分类号 B25B23/16
代理机构 代理人
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