Patent ID: 9032848
Filing Date: 2015-05-19
Classification: B25B,Y10T

Abstract:
1. A torque wrench, comprising: a hollow body comprising a handle and an elongate sleeve partially inserted in the handle; a clutch mechanism mounted in the hollow body; a force-applying member pivotally mounted in the hollow body, wherein the force-applying member has a first end against the clutch mechanism and a second end opposing to the first end; and a plurality of interchangeable driving arms, each of interchangeable driving arms having a coupling end detachably mounted at the second end of the force-applying member and a driving end for driving a workpiece, wherein each of the interchangeable driving arms is coaxial to the force-applying member when the coupling end thereof is mounted at the second end of the force-applying member, and wherein the interchangeable driving arms are different in length from each other; wherein a plurality of sets of scales are formed on the elongated sleeve each set of the scales corresponding to a separate one of the interchangeable driving arms and indicating a toque to be applied to the workpiece by said separate one of the interchangeable driving arms.