发明名称 Control mechanism for controlling head of a box end wrench
摘要 A wrench includes a box end head with a protrusion extending therefrom and the protrusion has an inclined surface defined in a distal end thereof and a first engaging area defined in a part of the inclined surface. The protrusion is pivotably connected to the handle which has a transverse hole and a control member is movably received in the transverse hole along a longitudinal direction of the transverse hole. The control member has a second engaging area removably engaged with the first engaging area along the longitudinal direction of the transverse hole. The head can be pivoted relative to the handle when the second engaging area is moved away from the first engaging area by pushing the control member.
申请公布号 US6895839(B1) 申请公布日期 2005.05.24
申请号 US20040910288 申请日期 2004.08.04
申请人 HSIEN CHIH-CHING 发明人 HSIEN CHIH-CHING
分类号 B25B23/00;B25G1/06;(IPC1-7):B25B23/16 主分类号 B25B23/00
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