Patent ID: 7380868

Claim:
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 retracted 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 including at least a first section and a second section that successively nests within the first section, the second section moving outward from the first section when the drag reducing assembly is moved from the retracted configuration toward the extended configuration, and the second section nesting into the first section when the drag reducing assembly is moved from the extended configuration toward the retracted configuration; the drag reducing assembly defining an extended volume when the drag reducing assembly is in the extended configuration, the extended volume tapering inwardly as the drag reducing assembly extends in a direction from the first end to the second end of the drag reducing assembly; and a first set of linkage assemblies that interconnect the first section to the second section.