Patent ID: 9114510
Filing Date: 2015-08-25
Classification: B25B,F16D

Abstract:
1. A pawl structure for a ratchet wrench, comprising: a pawl having multiple engaging teeth defined in a first side thereof and the engaging teeth comprising multiple continuous first teeth at a mediate portion thereof, multiple second teeth located on at one end of the engaging teeth, a ratio of number of teeth between the first teeth and the second teeth being within a range of 1.5:1 to 3.5:1, each tooth of the engaging teeth having a tip and a root, the tip being a curved face and the root being a recessed area, the tips of the first teeth located on a first curve which has a center, a central line extending through the center and intersecting the first curve, the tips of the second teeth located on a second curve, the second curve extending away from the central line, a center of the second curve located on the central line, a radius of the second curve being larger than that of the first curve, the pawl having a first recess defined in a second side thereof and the first recess located corresponding to the central line and the first teeth, at least one end of the first recess located along an axial direction of the pawl being a closed end, two second recesses located on two sides of the first recess, at least one end of the two second recesses located along an axial direction of the pawl being a closed end, multiple continuous third teeth being defined on the other end of the engaging teeth, the second and the third teeth having the same shape and number, the tips of the second teeth and the third teeth being located on the second curve, the second and the third teeth being located symmetrically relative to the central line, the two second recesses being respectively located corresponding to the second teeth and the third teeth.