14-08-2014 дата публикации
Номер: US20140224080A1
A selective one-way wrench includes a head, a rotor, a switch, a pawl and a torque spring. The head includes a first cavity defined therein, a second cavity in communication with the first cavity, and a third cavity in communication with the second cavity. The rotor is rotationally placed in the first cavity and formed with a gear. The switch includes a body pivotally inserted in the third cavity, a recess defined in the body, and a bore in communication with the recess. The pawl is movably placed in the second cavity and formed with a plurality of teeth engaged with the gear and a groove defined therein. The torque spring includes a helical portion placed in the recess, a first rectilinear end extending into the groove from the helical portion, and a second rectilinear end extending into the bore from the helical portion. 1. A mode-switching unit including:a head;a rotor placed in the head; and a switch including a body, a recess defined in the body, and a bore in communication with the recess;', 'a pawl including a groove defined therein, wherein the pawl is adapted for engagement with the rotor; and', 'a torque spring including a helical portion and first and second rectilinear ends and extending from the helical portion, wherein the first rectilinear end is inserted in the groove, wherein the second rectilinear end is inserted in the bore, wherein the helical portion is placed in the recess., 'a mode-switching unit including2. A selective one-way wrench including the mode-switching unit according to claim 1 , wherein the head includes a first cavity for receiving the rotor claim 1 , a second cavity for receiving the pawl claim 1 , and a third cavity for receiving the body of the switch.3. A selective one-way wrench including:a head including a first cavity defined therein, a second cavity in communication with the first cavity, and a third cavity in communication with the second cavity;a rotor rotationally placed in the first cavity and formed with a gear;a ...
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