Patent ID: 6230592
Filing Date: 2001-05-15
Classification: B25B,Y10S

Abstract:
A turnable tightening device adapted to tighten a screw hook, and adapted to be actuated by a driving tool which includes a handle and a shank with an actuating end, for screwing the screw hook into a wall, the screw hook including a hook body, a threaded shaft, and a joining member interposed between the hook body and the threaded shaft and forming a shoulder portion with the hook body, said turnable tightening device comprising:a stationary member having a lower end portion adapted to be actuated by the driving tool to turn about an axis, and an upper end portion disposed opposite to said lower end portion in a longitudinal direction which is parallel to the axis, said upper end portion including a first upper wall, a first lower wall opposite to said first upper wall in the longitudinal direction, and a lateral wall extending in the longitudinal direction and joining said first upper wall with said first lower wall, said lateral wall being formed with a slot that extends in a transverse direction relative to the longitudinal direction and that is disposed to communicate said first upper and lower walls, said slot having a dimension adapted to permit only the joining member of the screw hook to have access thereto in the transverse direction;a movable member disposed on said stationary member and movable relative to said upper end portion in the longitudinal direction, said movable member including a second upper wall facing and spaced apart from said first lower wall in the longitudinal direction, and a second lower wall disposed opposite to said second upper wall in the longitudinal direction and having a retaining groove of a profile adapted to retain the hook body of the screw hook;a guiding member disposed to regulate movement of said movable member relative to said upper end portion in the longitudinal direction; anda biasing member for biasing said movable member away from said upper end portion such that the shoulder portion of the screw hook abuts tightly against said first upper wall and such that the hook body of the screw hook engages tightly said movable member.