发明名称 High torsion ratcheting driver handle
摘要 A ratcheting handle includes an elongated body having an end portion formed with an inner annular wall that extends in an axial direction to define an axial hole. A ratcheting mechanism is disposed in the axial hole, and includes a gear member that is disposed to be coaxial and rotatable in the axial hole and that has a coupling end engaging a shank of the associated driver bit, and a rim portion disposed around the axial direction. The rim portion is provided with a tooth member that is spaced apart from the annular wall in a radial direction to define an annular chamber therebetween. The ratcheting mechanism further includes a pawl member disposed in the annular chamber, and having a fulcrum point lying in a fulcrum line parallel to the axial direction, and first and second tooth portions disposed at two sides of the fulcrum line in such a manner that one of the tooth portions engages the tooth member when the fulcrum point is shifted between first and second positions along a line parallel to a chord of the gear member. A spring includes a mounting end secured to the fulcrum point, and a free end that extends angularly from the mounting end and that is slidably retained in first and second anchored points on the annular wall.
申请公布号 US6070503(A) 申请公布日期 2000.06.06
申请号 US19980158578 申请日期 1998.09.22
申请人 SHIAO, HSUAN-SEN 发明人 SHIAO, HSUAN-SEN
分类号 B25B13/46;B25B15/02;B25B15/04;B25G1/10;(IPC1-7):B25B13/46 主分类号 B25B13/46
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