Patent ID: 8196496
Filing Date: 2012-06-12
Classification: B25B

Abstract:
1. A screwdriver comprising: a locking member comprising a first locking portion and a second locking portion extending from the first locking portion; the first locking portion defining a first locking member hole therein; the second locking portion defining a second locking member hole communicating with the first locking member hole, a diameter of the first locking member hole being less than a diameter of the second locking member hole; a first resisting surface defined in the second locking member hole and connected to the first lock member hole; a positioning member received in the second locking member hole, the positioning member comprising a positioning portion at an end of the positioning member; a diameter of the positioning portion being greater than the first locking member hole; the positioning member defining a first positioning member hole, a second positioning member hole, and an angled surface located between the first positioning member hole and the second positioning member hole; a retaining member securing the positioning member to the locking member; the retaining member defining a first retaining member hole to receive the second locking portion and a second retaining member hole communicating with the first retaining member hole to receive the positioning member; a diameter of the second retaining member hole being less than a diameter of the first retaining member hole and the diameter of the positioning portion; a second resisting surface defined in the first retaining member hole and connected to the second retaining member hole; and a rotatable member slidable in the first positioning member hole; wherein the positioning member is slidable between a first position where the rotatable member is positioned in the first positioning member hole, and a second position where the rotatable member is positioned in the second positioning member hole so as to splay the second positioning member hole; the rotatable member moves the positioning member from the first position to the second position by pushing the angled surface; and the positioning portion is disposed between the first resisting surface and the second resisting surface.