Patent ID: 6766717
Filing Date: 2004-07-27
Classification: B25B

Abstract:
A wrench comprising:a substantially L-shaped rod comprising a first section and a second section, a driving portion being formed on the second section for engaging with a fastener; a casing including a receiving section for accommodating the first section of the rod and a positioning hole for rotatably receiving a portion of the second section of the rod, the receiving section of the casing being configured to allow relative pivotal movement between the casing and the rod, the casing further including a receptacle communicated with the first section of the rod; an engaging member mounted in the receptacle of the casing; and means for biasing the engaging member to press against the first section of the rod, thereby exerting an engaging force between the first section of the rod and the engaging member; wherein when a rotational force applied to the casing is smaller than the engaging force, the rod is turned to thereby turn the fastener; and wherein when a rotational force applied to the casing is greater than the engaging force, the casing slides while the rod is not turned.