A locking mechanism (100) includes one or more casters (102,103,104,105) coupled to a frame (101). A lift mechanism (106,107) is distally extendable from the frame to elevate the casters. A pivoting bar (108) is pivotable relative to the frame to distally extend the lift mechanism from the frame. A foot pedal (113) is pivotable relative to the pivoting bar between a closed position and an angularly displaced open position. When in the angularly displaced open position, the foot pedal can extend distally from the pivoting bar.
