Patent ID: 6640669
Filing Date: 2003-11-04
Classification: B25B

Abstract:
A ratchet wrench in which rotation of an output shaft of an air motor is transmitted to a ratchet unit via a reduction gear unit in order to rotate a spindle connected to the ratchet unit, the ratchet unit being accommodated within a ratchet housing, the ratchet wrench comprising:a cover plate covering one face of the ratchet housing opposite the other face thereof from which the spindle projects; a pair of reverse buttons disposed on the cover plate to be slidable along a direction parallel to the output shaft of the air motor; a pair of reverse arms rotatably attached to the reverse buttons, each reverse arm being movable together with the corresponding reverse button; and a reverse gear which the reverse arms engage upon movement of the reverse arms caused by sliding movement of the reverse buttons, the reverse gear being rotated in one direction when one of the reverse arms engages the reverse gear and rotated in the opposite direction when the other reverse arm engages the reverse gear.