Patent ID: 8549961
Filing Date: 2013-10-08
Classification: B25B

Abstract:
1. An adjustable wrench comprising: a fixed jaw including first and second ends, a chamber and a hole defined therein, with the hole extended from the chamber to an outer periphery of the fixed jaw, with the chamber including an adjusting mechanism and an abutting mechanism disposed therein, with the adjusting mechanism including a worm gear, a fixing member, and a first biasing member, with the worm gear including the fixing member inserted therein, with the worm gear rotatable about and movable along the fixing member, with the fixing member inserted through the hole, with the first biasing member engaged with the worm gear, with the abutting mechanism including an abutting member, with the abutting member pivotally fixed and including an end engagable with the worm gear, wherein the chamber forms a concavity receiving the abutting member, with the abutting member defining a fixing end and first and second engaging ends, with the concavity pivotally bearing the fixing end; a movable jaw movably received in the second end of the fixed jaw and engaged with the worm gear, with the movable jaw moving linearly relative to the fixed jaw upon rotating the worm gear; a handle pivotally fixed to the fixed jaw and allowing grasping by a user; and a lock mechanism installed between the fixed jaw and the handle and operable to a lock position a relative pivotal movement between the fixed jaw and the handle is obstructed and to an unlock position the fixed jaw and the handle are able to pivot relative to each other; and wherein the lock mechanism is in the unlock position, the adjustable wrench is operable in a first direction wrenching an object and including the worm gear stopped from moving along the fixing member by the abutting member fixedly abutting against the worm gear, with the adjustable wrench operably moved in the first direction including the second engaging end abutted against the worm gear; and wherein the lock mechanism is in the unlock position, the adjustable wrench is operable in a second direction moving relative to the object and including the worm gear adapted to be moved with respect to the fixing member and including the movable jaw moving with respect to the fixed jaw and including the abutting member not fixedly abutted against the worm gear; and wherein the lock mechanism is in the lock position, the adjustable wrench is operable in either the first and second directions wrenching the object.