Patent ID: 8397605

Claim:
A ratchet wrench, comprising: a wrench body having a head portion and a shank, the head portion containing a ratchet socket, wherein the ratchet socket forms a first opening and a second opening at two reverse sides of the head portion connected by a channel; a driving ratchet having a wheel portion received in the ratchet socket and a connecting portion jutting out of the head portion through the first opening; a change-gear set having a passive gear mounted on an axle center of the wheel portion, said passive gear being disposed offset and on an upper surface of the wheel portion, . . . and the outer teeth are configured to mesh the toothed periphery, while the inner teeth are configured to engage with the passive gear; a retaining lid rotatably covering the second opening, having a positioning recess for receiving the toothed driving ring, and having a positioning hole; and a positioning rod, being movably received in the positioning hole.