Patent ID: 8408100

Claim:
An open end wrench capable of fast driving a workpiece, with the workpiece including first, second, third, fourth, fifth, and sixth sides respectively having first, second, third, fourth, fifth, and sixth faces in a first rotating direction and respectively having first, second, third, fourth, fifth, and sixth force-receiving faces in a second rotating direction, with the open end wrench comprising, in combination: a body including a handle and a jaw portion formed on an end of the handle, with spaced first and second jaws formed on an end of the jaw portion opposite to the handle, with the jaw portion including a throat intermediate the first and second jaws, with the throat and the first and second jaws together defining a wrenching space adapted for receiving the workpiece, with the first jaw including a force-applying face facing the wrenching space and facing a distal end of the second law, with the force-applying face adapted to correspond to the first force-receiving face in the first rotating direction of the workpiece, with the jaw portion further including an arcuate sliding groove facing the wrenching space, with the sliding groove including spaced, first and second support walls and an arcuate sliding wall extending between the first and second support walls, with the sliding wall being free of holes, grooves, and recesses and having an arcuate face, with a guide provided in the sliding groove and having two ends fixed to the first and second support walls; a slide slideably received in the sliding groove, with the slide including a first side having an arcuate sliding face slideable along the sliding wall of the sliding groove, with the sliding face being free of holes, grooves, and recesses, with the slide further including a second side opposite to the first side of the slide, with the second side of the slide including a first wrenching face located outside of the sliding groove, with the first wrenching face adapted to correspond to the fourth force-receiving face in the first rotating direction of the workpiece, with the slide further including a top face and a bottom face, with the slide further including a second wrenching face at an angle of 120° to the first wrenching face, with the second wrenching face adapted to correspond to the third force-receiving face in the first rotating direction of the workpiece, with the slide further including an arcuate guiding slot extending from the top face through the bottom face, with the guiding slot free of holes, grooves, and recesses, with the guide received in the guiding slot, preventing the slide from disengaging from the sliding groove, with the guiding slot including an abutting end and a pressing end, with the abutting end being in contact with the guide when the slide is in an initial position not engaged with the workpiece; and an elastic device having two ends respectively abutting the guide and the pressing end of the guiding slot for biasing the slide to the initial position.