Patent ID: 9199673
Filing Date: 2015-12-01
Classification: B62D

Abstract:
1. A drag reduction system configured to be coupled to a rear frame assembly of a trailer including a rear frame and a rear swing door, the drag reduction system comprising: a main wall panel configured to be coupled to a vertical member of the rear frame to extend generally rearwardly of the trailer at least partially along a height of the trailer, wherein the main wall panel is pivotable relative to the rear frame assembly between a deployed position wherein the inner surface of the wall panel is spaced-apart from the outer surface of the rear swing door, and a stowed position wherein the inner surface of the wall panel is adjacent to and engaged with the outer surface of the rear swing door, further comprising a secondary wall panel configured to be pivotably coupled to the rear swing door of the trailer, wherein the secondary wall panel is configured to be coupled to a top portion of the rear swing door, wherein the secondary wall panel includes a first portion configured to be coupled to a top portion of the rear swing door and a second portion pivotably coupled to the first portion for movement about an axis parallel to a top edge of the rear swing door, wherein the second portion of the secondary wall panel is configured to engage a top edge of the main wall panel when the main wall panel is in the deployed position, and wherein an inner surface of the second portion of the secondary wall panel is configured to engage and lie adjacent to an outer surface of the main wall panel when the main wall panel is in the stowed position.