Patent ID: 7089830

Claim:
A wrench comprising: a handle including an end, the handle further including a hole defined in a side thereof; a head formed on the end of the handle, the head including a compartment, a cavity being defined in an inner periphery delimiting the compartment and communicating with the hole of the handle; a drive member rotatably mounted in the compartment, the drive member including a plurality of teeth in an outer periphery thereof; two pawls slidably mounted in the cavity, each said pawl including a first end and a second end, the first end of each said pawl including a plurality of teeth in a side thereof for disengageably engaging with the teeth of the drive member, the second end of each said pawl defining a space, the second end of each said pawl further including a protrusion, the pawls being so mounted that the spaces of the pawls overlap with each other and that the protrusion of each said pawl is located in the space of the other pawl; an elastic element mounted between the pawls for biasing the teeth of each said pawl to engage with the teeth of the drive member; and a switch pivotally mounted in the hole of the handle, the switch including an actuating member extending into the overlapped spaces of the pawls and between the protrusions of the pawls, the actuating member of the switch being pivotable to engage with and thus move the protrusion of one of the pawls, disengaging the teeth of said one of the pawls from the teeth of the drive member and thereby changing a driving rotation direction and a free rotation direction of the wrench.