Patent ID: 7082862

Claim:
A hand tool having an adjustable head, and the hand tool comprising: a handle having a distal end and an elongated slot with a bottom defined at the distal end and forming a first pivot arm and a second pivot arm at the distal end; a head adjustably mounted at the distal end of the handle and having a body pivotally mounted at the distal end and having a pivot junction pivotally mounted in the elongated slot between the first and the second pivot arms and having an exterior toothed surface corresponding to the bottom of the elongated slot; and a head locking assembly to position and lock the head at a given angular position relative to the handle and the head locking assembly comprising a sliding block slidably mounted in the elongated slot between the pivot junction of the body and the bottom of the elongated slot and comprising an engaging device to engage the exterior toothed surface of the pivot junction; a rotatable locking assembly rotatably mounted in the sliding block and comprising a spindle rotatably mounted in the sliding block, a turning leaf attached to the spindle to rotate the spindle and a locking device attached to the spindle; and a block biasing assembly mounted in the elongated slot between the sliding block and the bottom of the elongated slot; whereby turning the turning leaf until the locking device abuts the bottom of the elongated slot restricts the sliding block in motion and lock the head at the given angular position.