Pawl structure for ratchet wrenches and the wrenches using the same
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United States of America Patent
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Aug 25, 2015
Grant Date -
Dec 18, 2014
app pub date -
Jun 18, 2013
filing date -
Jun 18, 2013
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Abstract
A pawl structure of ratchet wrenches has multiple engaging teeth, a first recess and a second recess. The engaging teeth include first teeth at the mediate portion and second teeth are respectively located at two ends of the engaging teeth. The tips of the first teeth are located on a first curve which has a center and a central line extends through the center and intersects the first curve. The tips of the second teeth are located on a second curve which gradually leaves from the center of the first curve along with the second curve extending away from the central line. The first recess is located corresponding to the central line and the first teeth. The second recess is located corresponding to the second teeth.
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