Patent ID: 7134359

Claim:
An adjustable handle assembly for a person mobility vehicle having a front chassis, and the adjustable handle assembly comprising: a mounting bracket adapted to be attached to the front chassis; an adjusting device including a primary pivot post and a secondary pivot post that have respectively a top end and a bottom end, and both the bottom ends pivotally attached to the mounting bracket; a handle mounted at the top end of the primary pivot post; and a mechanical lock interconnecting the primary and secondary pivot posts and comprising a stationary bracket mounted on the primary pivot post; a bushing bracket pivotally mounted in the stationary bracket; a connecting tube attached to the bushing bracket, being hollow for slidably receiving the top end of the secondary pivot post and having a top end and at least one wedge hole; a locking wedge movably mounted in each one of the at least one wedge hole and having an inclined surface exposed out of the respective one of the at least one wedge hole; a sliding block slidably mounted on the connecting tube over the at least one wedge hole and having a bottom annular bevel slidably abutting the inclined surface of the locking wedge; a basing member mounted between the bushing bracket and the sliding block to provide a restitution force to return the sliding block from an unlocked position to a locked position; and a lever pivotally mounted on the primary pivot post and coupled to the sliding block to move the sliding block toward the stationary bracket to the unlocked position; wherein the sliding block is forced by the basing member thereby the bottom annular bevel presses the inclined surface of the lock wedge to clamp the secondary pivot post when the sliding block is in the locked position and is moved toward the stationary bracket by pivoting the lever thereby the bottom annular bevel separates from the inclined surfaces of the locking wedge when the sliding block is in the unlocked position.