![]() ![]() In combination with a vehicle for towing a trailer, the vehicle having a slightly upwardly curved roof with a windshield sloping downwardly and forwardly from the front of the roof, a rigid air deflector having a front edge extending substantially across the roof adjacent the windshield, the front edge being secured to and conforming to the roof adjacent the windshield and preventing air flow between the front edge and the roof across substantially the entire width of the roof, the deflector being inclined rearwardly and upwardly from the roof so as to approximate a rearward extension of the windshield but at a smaller angle to the horizontal than the windshield, the deflector increasing in width from front to rear, the front edge of the deflector being rockable on the roof to vary its inclination while conforming to the roof along its front edge across substantially the entire width of the roof to prevent said air flow between the front edge and the roof, and means extending between the roof and the deflector for adjusting the inclination of the deflector.ĩ. For use on the roof of a towing vehicle which is towing a trailer, an air deflector having a front edge shaped to rest on and conform to the front portion of the roof of the towing vehicle with the deflector inclined rearwardly and upwardly therefrom, means for securing the front edge on the front portion of the roof to prevent flow of air between the front edge and the roof, the front edge extending substantially across the width of the roof, and the deflector increasing in width from front to rear, and means rearward of the front edge for adjusting the inclination of the deflector relative to the roof whereby the deflector can be adjusted to direct air over the top of the trailer, the means for adjusting the inclination of the deflector comprising a pair of clamps securable one on either side of the towing vehicle, a transverse bar extending between said clamps, a pair of arms extending upwardly from the bar to the deflector, and means for adjusting the angles of the arms relative to the bar.Ĩ. A device as claimed in claim 1 wherein the deflector has longitudinal reinforcing ribs extending upwardly therefrom.ħ. A device as claimed in claim 4 wherein the means for securing the front edge on the roof comprise a clamp affixed to each end of the lip, each clamp having a hook engageable with a roof gutter of the towing vehicle.Ħ. A device as claimed in claim 1 wherein the rigid front edge is defined by a front lip from which the top surface of the deflector is inclined rearwardly and upwardly, and at the underside of the lip a deformable sealing strip for sealingly engaging and conforming to the roof of the towing vehicle.ĥ. ![]() A device as claimed in claim 2 wherein the deflector has side edges from each of which a side surface extends downwardly, the side surfaces increasing in height from the front to the rear to direct air flow away from the sides of the towing vehicle and trailer.Ĥ. ![]() A device as claimed in claim 1 wherein the deflector increases in width from front to rear.ģ. ![]() For use on the roof of a towing vehicle which is towing a trailer, a rigid air deflector having a front edge that extends substantially across the width of the front portion of the roof of the towing vehicle and is shaped to rest on and conform to the front portion of the roof of the towing vehicle in contact therewith along substantially the entire length of the front edge with the deflector inclined rearwardly and upwardly therefrom, means for securing the front edge on the front portion of the roof to prevent flow of air between the front edge and the roof, the front edge being rockable on the roof while maintaining said contact with the roof along substantially the entire length of the front edge, and means rearward of the front edge for supporting the deflector and adjusting the inclination of the deflector relative to the roof by rocking the front edge on the roof in said contact therewith whereby the deflector can be adjusted to direct air over the top of the trailer while maintaining a seal against flow of air between the front edge and the roof.Ģ. ![]()
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