Patent ID: 7302876

Claim:
A bi-sectional wrench comprising: a lever comprising a space defined therein and teeth formed on the wall of the space; a handle comprising a space defined therein and teeth formed on the wall of the space; a toothed wheel movable in the spaces between a first position where the teeth of the toothed wheel are engaged with the teeth of the lever and handle and a second position where the teeth of the toothed wheel are only engaged with the teeth of one of the lever and handle; a switch operable for moving the toothed wheel between the first and second positions; a boss formed on one of the handle and switch; and a groove defined in the other of the handle and switch and formed with two ends so that the arrival at the first position is signaled by the contact of the boss with one of the ends of the groove while the arrival at the second position is signaled by the contact of the boss with the other end of the groove.