Aerodynamic drag reducing apparatus

Abstract

An aerodynamic drag reducing apparatus is provided for use with vehicles having surfaces that are not streamlined. The apparatus including an exterior cover supported by moveable frames which in turn are supported by sets of supporting linkages. The moveable frames extend rearward and together with the exterior cover form a drag reducing shape for use in a drag reducing configuration and collapse for use in a space saving configuration.

1 . A drag reducing device for use in reducing drag on vehicles, the drag reducing device comprising:
 a drag reducing assembly that is movable between an extended configuration and a refracted configuration, the drag reducing assembly including a first end adapted for connection to the vehicle and a second end that is moved outwardly from the first end when the drag reducing assembly is moved from the retracted configuration toward the extended configuration;   the drag reducing assembly at least partially defining an extended volume when the drag reducing assembly is in the extended configuration; and   the drag reducing assembly including a scissors linkage for extending and retracting the drag reducing assembly.