Patent ID: 8516927

Claim:
A socket wrench, comprising: a handle having a first end provided with a housing and a second end provided with a grip portion; a drive shank having a first end provided with a ratchet wheel mounted in the housing of the handle; two pawl members pivotally mounted in the housing of the handle and engaged with the ratchet wheel of the drive shank; a switching member rotatably mounted in the housing of the handle and located between the pawl members; two elastic members each mounted in the housing of the handle and each biased between the housing of the handle and a respective one of the pawl members; a control knob rotatably mounted on the housing of the handle and connected with the switching member; a driven arm having a first end provided with a mounting sleeve secured on the drive shank and a second end provided with an arcuate mounting slot; a connecting plate provided on the handle; two driving arms and provided on the connecting plate and received in the mounting slot of the driven arm; and a snap ring secured on the drive shank and abutting the mounting sleeve of the driven arm; wherein: the driving arms are located at two opposite ends of the connecting plate; the drive shank has a periphery provided with a polygonal connecting portion; the mounting sleeve of the driven arm has an interior provided with a polygonal mounting hole mounted on the connecting portion of the drive shank; the control knob drives the switching member to pivot the pawl members so that one of the pawl members provides a oneway ratcheting function to the ratchet wheel of the drive shank, and the housing of the handle drives the ratchet wheel of the drive shank in one direction only so as to operate (screw or unscrew) a workpiece; the mounting sleeve is located under the housing of the handle; and the snap ring is located under the mounting sleeve of the driven arm.