Rigid air-deflecting tank contoured to tow-vehicle roof

A tow vehicle having a passenger compartment and a roof over said passenger compartment,

• a liquid storage tank mounted atop the roof of the tow vehicle, the storage tank comprising a plurality of wall portions rigidly interconnected to form a closed container having a self-sustaining rigid shape,
• the tank having a bottom wall configured to conform to the upper external roof surface of the tow vehicle,
• the tank having a convex front wall configured to provide deflection of air flow laterally and upwardly relative to the front of a trailer being towed by the tow vehicle and extending at least as high as the tank above the tow vehicle,
• the tank having a flat vertically extending rear wall, the tank having a plurality of internal baffles to dampen movement of liquid in the tank during operation of the tow vehicle,
• the tank having its major length dimension extending transversely of the length of the tow vehicle and having anchoring means at opposite ends of the tank to anchor the tank to opposite sides of the vehicle roof,
• the height and front-to-rear dimensions of the tank being approximately the same with each such dimension being less than half the length of the tank.

A tow vehicle having a passenger compartment and a roof over said passenger compartment,

• a trailer connected to the tow vehicle and having a frontal area extending higher than the roof of the tow vehicle,
• a liquid storage tank mounted atop the roof of the tow vehicle, the storage tank comprising a plurality of wall portions rigidly interconnected to form a closed container having a self-sustaining rigid shape,
• the tank having a bottom wall configured to conform to the upper external roof surface of the tow vehicle,
• the tank having a convex front wall configured to provide a deflection of air flow laterally and upwardly relative to the front of a trailer being towed by the tow vehicle and extending at least as high as the tank above the tow vehicle,
• the tank having a flat vertically extending rear wall, the tank having a plurality of internal baffles to dampen movement of
• liquid in the tank during operation of the tow vehicle, the tank having its major length dimension extending transversely of the length of the tow vehicle and having anchoring means at opposite ends of
• the tank to anchor the tank to opposite sides of the vehicle roof, the height and front-to-rear dimensions of the tank being approximately the same with each such dimension being less than half the length of the tank.