Selective one-way wrench
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United States of America Patent
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Feb 24, 2015
Grant Date -
Aug 14, 2014
app pub date -
Feb 8, 2013
filing date -
Feb 8, 2013
priority date (Note) -
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Abstract
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.
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