Patent ID: 6789451
Filing Date: 2004-09-14
Classification: B25B

Abstract:
An adjustable wrench, comprising:a handle having a head portion and shank, wherein the head portion has a fixed jaw, a transverse guiding slot and an opening communicated with the guiding slot; a movable jaw having a guiding portion and a rack on the guiding portion, wherein the movable jaw receives the guiding portion in the guiding slot of the handle to be moved toward or away from the fixed jaw; an adjusting worm having a through hole at a center thereof and a helical tooth at an outer surface thereof, wherein the adjusting worm is received in the opening and engages the helical tooth with the rack of the movable jaw whereby the adjusting worm is turned to drive the movable jaw to move along the guiding slot; an adjusting device having at least a part thereof received in the through hole of the adjusting worm whereby the adjusting worm is turned freely relative to the adjusting device; and wherein the adjusting device is pivoted on the handle to be turned along a rotation axle and the adjusting worm is turned along a rotation axle and the rotation axle of the adjusting device deviates from the rotation axle of the adjusting worm whereby the adjusting device is turned to move the adjusting worm toward or away from the movable jaw.