Land vehicles: bodies and tops – Bodies – Accessories
Patent
1982-11-08
1984-07-10
Song, Robert R.
Land vehicles: bodies and tops
Bodies
Accessories
B62D 3500
Patent
active
044589379
ABSTRACT:
An aerodynamic drag reducing device for a tractor trailer vehicle includes a rigid deflector panel having its leading edge pivotally mounted on the cab roof and having a length greater than the cab roof so that the trailing edge of the deflector panel overhangs the rear wall of the cab. A pair of rigid cab extender panels are mounted on the rear wall of the cab in alignment with the cab side walls. The deflector panel and extender panels terminate at a distance from the trailer which permits unrestricted turning movement of the tractor relative to the trailer. A pair of air deflecting side members extend generally vertically between each side edge of the rigid deflector panel and the cab roof and the extender panels. The side members are molded urethane and comprise a plurality of foldably interconnected triangular segments which fold relative one another to accommodate pivotal movement of the rigid deflector panel relative to the cab roof and the extender panels. The top edge of the side member is attached to the side edge of the deflector panel. The bottom edge of the side member is attached to the cab roof and to the extender panel. The deflector panel, the extender panels and the side members cooperate to aerodynamically extend the cab toward the trailer to substantially reduce the drag inducing gap therebetween without requiring any connection to or modification of the trailer.
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Beckmann Ronald L.
Gregg Willard W.
Schroeder Del C.
General Motors Corporation
Leahy Charles E.
Song Robert R.
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