发明名称 Buoyant hand tool with enhanced connection effect
摘要 The present invention provides a buoyant hand tool including a handle formed with an internal air chamber and a shank having an insertion end inserted in the handle. The buoyant hand tool further includes a sleeve disposed in the air chamber of the handle. The insertion end of the shank is extended into the air chamber and inserted in the sleeve. Accordingly, the connection strength between the handle and the shank is increased to enhance operation torque of the hand tool.
申请公布号 US8056450(B2) 申请公布日期 2011.11.15
申请号 US20090501584 申请日期 2009.07.13
申请人 HSIEH CHIH-CHING 发明人 HSIEH CHIH-CHING
分类号 B25B23/16;B25G1/00 主分类号 B25B23/16
代理机构 代理人
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