[특허]Aerodynamic rear drag reduction system for a trailer

Wabash National, L.P.

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Aerodynamic rear drag reduction system for a trailer

국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62D-035/00
출원번호	US-0141409 (2016-04-28)
등록번호	US-9834262 (2017-12-05)
발명자 / 주소	Baker, Leonard W. Haan, Brian N. Courtney, Michael J. Sweet, James Andrew
출원인 / 주소	Wabash National, L.P.
대리인 / 주소	Stewart, Carli E.
인용정보	피인용 횟수 : 0 인용 특허 : 118

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An aerodynamic rear drag reduction system of the present disclosure is 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 includes a side panel configured to be coupled to the rear swing door to extend generally vertically at least partially along a height of the trailer; and a folding mechanism coupled to the side panel. The folding mechanism moves the side panel between (i) a fully-deployed position wherein the side panel is configured to extend generally rearwardly away from the rear end of the trailer and (ii) a fully-stowed position wherein an inner surface of at least a portion of the side panel is configured to lie generally adjacent the rear swing door. The folding mechanism is configured to be coupled to a door locking mechanism of the trailer for movement therefrom.

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1. An aerodynamic rear 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 side panel configured to be coupled to the rear swing door to extend generally vertically at least partially along a height of the trailer; and a folding mechanism coupled to the side panel to move the side panel between (i) a fully-deployed position wherein the side panel is configured to extend generally rearwardly away from the rear end of the trailer and (ii) a fully-stowed position wherein an inner surface of at least a portion of the side panel is configured to lie generally adjacent the rear swing door, wherein the folding mechanism is configured to be coupled to a door locking mechanism of the trailer for movement therefrom; wherein the folding mechanism is automatically actuated as a result of movement of the door locking mechanism. 2. The aerodynamic rear drag reduction system of claim 1, wherein movement of a handle of the door locking mechanism from a locked position to an unlocked position automatically moves the side panel form the fully-deployed position to the full-stowed position. 3. The aerodynamic rear drag reduction system of claim 1, wherein the folding mechanism is configured to be coupled to a lock-rod of the door locking mechanism, and wherein rotational movement of the lock-rod automatically actuates the folding mechanism. 4. An aerodynamic rear 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 side panel configured to be coupled to the rear swing door to extend generally vertically at least partially along a height of the trailer; anda folding mechanism coupled to the side panel to move the side panel between (i) a fully-deployed position wherein the side panel is configured to extend generally rearwardly away from the rear end of the trailer and (ii) a fully-stowed position wherein an inner surface of at least a portion of the side panel is configured to lie generally adjacent the rear swing door,wherein the folding mechanism is configured to be coupled to a door locking mechanism of the trailer for movement therefrom,wherein the folding mechanism includes (i) a first linkage assembly configured to be coupled to a vertical lock-rod of a door locking mechanism, (ii) a vertically-extending deployment rod coupled to the first linkage assembly, and (iii) a second linkage assembly coupled at one end to the vertically-extending deployment rod and at another end to the side panel. 5. The aerodynamic rear drag reduction system of claim 4, wherein the second linkage assembly includes (i) a first link coupled to the deployment rod for rotational movement therewith, and (ii) a second link pivotably coupled at a first end to the first link and pivotably coupled at a second end to the side panel. 6. The aerodynamic rear drag reduction system of claim 1, further comprising a top panel configured to be coupled to a top portion of the rear swing door of the trailer to extend generally horizontally at least partially along a top portion of the rear frame assembly of the trailer, wherein the top panel is movable between (i) a fully-deployed position wherein the top panel is configured to extend generally rearwardly away from the rear end of the trailer and a top edge of the side panel is spaced inwardly from an outer edge of the top panel and (ii) a fully-stowed position wherein the top panel is configured to lie generally adjacent to an outer surface of the side panel. 7. The aerodynamic rear drag reduction system of claim 6, wherein the folding mechanism includes a support arm engaged with a bottom surface of the top panel when the top panel is in the fully-deployed position. 8. The aerodynamic rear drag reduction system of claim 6, wherein the top panel is positioned on top of the side panel and the bottom surface of the top panel engages the outer surface of the side panel when the top and side panels are each in the fully-stowed positions. 9. An aerodynamic rear 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 top panel configured to be coupled to the rear swing door of the trailer to extend generally horizontally at least partially along a width of the trailer;a side panel configured to be coupled to the rear swing door to extend generally vertically at least partially along a height of the trailer; anda folding mechanism directly engaged with the top panel and the side panel and configured to move the top and side panels between a fully-deployed position wherein the top and side panels are configured to extend generally rearwardly away from the rear end of the trailer and a fully-stowed position wherein the top and side panels are configured to lie generally adjacent the rear swing door,wherein the top panel is supported by both the side panel and the folding mechanism when the top panel is in the fully-deployed position, and an outer surface of the side panel is spaced inwardly from an outer edge of the top panel when the top panel is in the fully-deployed position. 10. The aerodynamic rear drag reduction system of claim 9, wherein a support arm of the folding mechanism moves along a bottom surface of the top panel as top panel moves between the fully-deployed and fully-stowed positions. 11. An aerodynamic rear 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 top panel configured to be coupled to the rear swing door of the trailer to extend generally horizontally at least partially along a width of the trailer;a side panel configured to be coupled to the rear swing door to extend generally vertically at least partially along a height of the trailer; anda folding mechanism directly engaged with the top panel and the side panel and configured to move the top and side panels between a fully-deployed position wherein the top and side panels are configured to extend generally rearwardly away from the rear end of the trailer and a fully-stowed position wherein the top and side panels are configured to lie generally adjacent the rear swing door,wherein the top panel is supported by both the side panel and the folding mechanism when the top panel is in the fully-deployed position, and an outer surface of the side panel is spaced inwardly from an outer edge of the top panel when the top panel is in the fully-deployed position, andwherein the folding mechanism includes (i) a vertical deployment rod configured to be coupled to a vertical lock-rod of a door locking mechanism of the trailer for rotational movement with the lock-rod, and (ii) a linkage assembly coupled to the deployment rod and the side panel to move the side panel between the fully-deployed and fully-stowed positions. 12. The aerodynamic rear drag reduction system of claim 11, wherein the linkage assembly includes (i) a first link rigidly coupled at one end to the deployment rod for rotational movement therewith and (ii) a second link pivotably coupled at a first end to the distal end of the first link and pivotably coupled at a second end to the side panel. 13. The aerodynamic rear drag reduction system of claim 12, wherein the first link extends generally rearwardly and the second link extends generally horizontally when the side panel is in the fully-deployed position. 14. The aerodynamic rear drag reduction system of claim 11, wherein the second link is configured to push against the side panel when the lock-rod is rotated in a counter-clockwise direction. 15. The aerodynamic rear drag reduction system of claim 11, wherein the linkage assembly is configured to support the top panel thereon when the top panel is in the fully-deployed position. 16. The aerodynamic rear drag reduction system of claim 11, wherein rotation of the lock-rod causes rotation of the vertical deployment rod, and rotation of the vertical deployment rod urges the linkage assembly to move the side panel between the fully-stowed and fully-deployed positions. 17. The aerodynamic rear drag reduction system of claim 9, further comprising a limit strap coupled at one end to the side panel and configured to be coupled at another end to the rear frame assembly of the trailer, wherein the limit strap prevents the side panel from moving beyond a predetermined location when in the fully-deployed position. 18. The aerodynamic rear drag reduction system of claim 9, further comprising a bumper coupled to the side panel and configured to engage the linkage assembly when the side panel is in the fully-stowed position, wherein the bumper is configured to maintain a minimum angle between the side panel and the linkage assembly when the side panel is in the fully-stowed position. 19. A method of operating a rear 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 method comprising: automatically moving a top panel of the rear drag reduction system and a side panel of the rear drag reduction system from a fully-deployed position wherein the top and side panels are configured to extend generally reawarwadly away from the rear end of the trailer to a fully-stowed position wherein the top and side panels are configured to lie generally adjacent the rear portion of the trailer upon movement of a door locking mechanism of the trailer from a locked position to an unlocked position.

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Aerodynamic rear drag reduction system for a trailer

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