Patent ID: 7121170

Claim:
A ratchet wrench, comprising: a handle; a drive head mounted on an end of the handle and having a first end formed with a receiving hole, a mediate portion formed with a receiving recess communicating with the receiving hole, and a second end formed with a receiving chamber communicating with the receiving recess; a ratchet wheel mounted in the receiving hole of the drive head; a pawl member pivotally mounted in the receiving recess of the drive head and engaged with the ratchet wheel; a control knob rotatably mounted in the receiving chamber of the drive head and having an inside formed with a passage radially extended through the control knob; a positioning plate mounted in the passage of the control knob and having a first end rested on the pawl member to push the pawl member to press the ratchet wheel; and an urging spring mounted on a second end of the positioning plate and urged between the positioning plate and the drive head; wherein the positioning plate is substantially E-shaped.