Ratchet wrench

Abstract

A ratchet wrench comprises a handle having a head portion at an end thereof. The head portion has a through hole and a chamber, wherein the chamber has a side thereof communicated with the through hole and has a sidewall at the other side thereof. An engaging member has a polygonal hole at central thereof and an annular teeth portion at exterior surface thereof. The engaging member is installed in the through hole of the handle for free rotating. A pawl has a teeth portion at a side thereof. The pawl is received in the chamber of the handle at a side thereof resting against the sidewall in the chamber and has the teeth portion thereof detachable meshed with the teeth portion of the engaging member, and a self-positioned elastic member is made from a flexible wire to form a spiral positioning portion and an elastic arm. The self-positioned elastic member is received in the chamber of the chamber of the handle at the side opposite from the pawl, whereby the positioning portion rests against both of the sidewall of the chamber and the engaging member and the elastic arm has the free end thereof resting against the pawl.

Dependencies are inferred from the claim text.