ROOF TOP DRAG REDUCING DEVICE

A roof top drag reducing device includes a lower base portion mounted to or formed integrally with the roof of a truck for semi-trailers. An upper portion of the drag reducing device is selectively movably mounted relative to the lower base portion between a first elevated operative position atop th...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WILEY, NATHANIEL C., JR, BOATH, JOHN R
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS MOTOR VEHICLES PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FORVEHICLES SEPARATION TRAILERS TRANSPORTING VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TOCARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS VEHICLES IN GENERAL WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILARDEVICES FOR VEHICLES
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Beschreibung
Zusammenfassung:	A roof top drag reducing device includes a lower base portion mounted to or formed integrally with the roof of a truck for semi-trailers. An upper portion of the drag reducing device is selectively movably mounted relative to the lower base portion between a first elevated operative position atop the lower base and a second non-operative retracted position generally forward of and below the lower base portion. The top portion of the drag reducing device will be in its elevated operative position when a trailer is attached to the truck and reduction of air resistance over the trailer is desired. The top portion of the drag reducing device will be in its forward non-operative position when, for example, several cabs are being towed and transported together from one location to another. If the lower base portion is formed integrally with the roof of the truck, the lower base portion can form the ceiling of a sleeper compartment or area of the truck to significantly increase the height of the sleeper area. A roof top drag reducing device includes a lower base portion mounted to or formed integrally with the roof of a truck for semi-trailers. An upper portion of the drag reducing device is selectively movably mounted relative to the lower base portion between a first elevated operative position atop the lower base and a second non-operative retracted position generally forward of and below the lower base portion. The top portion of the drag reducing device will be in its elevated operative position when a trailer is attached to the truck and reduction of air resistance over the trailer is desired. The top portion of the drag reducing device will be in its forward non-operative position when, for example, several cabs are being towed and transported together from one location to another. If the lower base portion is formed integrally with the roof of the truck, the lower base portion can form the ceiling of a sleeper compartment or area of the truck to significantly increase the height of the sleeper area.