Patent ID: 7274970

Claim:
A device for aiding, stacking and unstacking for a lift truck, with the following features: a height measuring device ( 16 ) for measuring the height of a fork ( 10 ) of the fork lift a control device for the actuation of the forklift to which the signals of the height measuring device ( 16 ) and a video camera ( 26 ) are transmitted, the control device including a fork elevation height pre-selection menu and a video menu, a single screen ( 24 ) connected to the control device for the operator of the lift truck, a pre-selection unit connected to the control device for pre-selecting the fork elevation height of the fork, the height preselection menu and the video menu being shown commonly or selectively on the screen, the video menu allowing an operator to position by visualization the fork for the desired stacking and unstacking, the control device automatically driving the fork via the fork elevation height preselection menu to the preselected height and producing a display on the screen ( 24 ) to indicate the preselected and the actual height of the fork, the control device being designed to switch to the video menu and switching the signal of the video camera ( 26 ) to the screen ( 24 ), when the fork enters a range close to the pre-set height of the fork.