Patent ID: 7021665

Claim:
A box for handling materials with a vehicle comprising: a box frame having front and rear corners and front, rear and side walls defining a space between said front, rear and side walls with said side walls having tops and bottoms; a sleeve positioned at each of said rear corners and extending between said top and bottom of said adjacent side walls; at least one mud flap secured under said rear wall of said box frame; at least one lifting unit connected with said mud flap and disposed within said sleeve and connected to said mud flap for raising and lowering said mud flap; a noise indicator positioned in the vehicle; a light indicator positioned in the vehicle and connected with said power source; a brake pressure switch connected with said light indicator and having at least one cable extending therefrom; a power source positioned in the vehicle and connected with said noise indicator and said light indicator by an electric wire to supply electric power to activate said noise indicator and said light indicator; and a multi-mode activator adjacent said brake pressure switch for regulating air supply into respective mode of operation of said mud flaps during lifting and lowering said mud flaps.