CA1156293A - Trailer undercarriage fairings - Google Patents
Trailer undercarriage fairingsInfo
- Publication number
- CA1156293A CA1156293A CA000370718A CA370718A CA1156293A CA 1156293 A CA1156293 A CA 1156293A CA 000370718 A CA000370718 A CA 000370718A CA 370718 A CA370718 A CA 370718A CA 1156293 A CA1156293 A CA 1156293A
- Authority
- CA
- Canada
- Prior art keywords
- aerodynamic
- undercarriage
- trailing edge
- transverse axle
- axle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/02—Streamlining the undersurfaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/82—Elements for improving aerodynamics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
TITLE
TRAILER UNDERCARRIAGE FAIRINGS
INVENTOR
Bradley Paul MARTIN
ABSTRACT
An aerodynamic fairing for placement under the undercarriage of a tractor or a trailer or a straight truck as disclosed.
The fairing is placed in front of the transverse axle that carries road running wheels and preferably in advance of each of such axles. The fairing assists in air diversion and in the streamlining of air passing by such axle. Air turbulence is reduced and the drag on the vehicle, tractor or trailer is also reduced. Greater fuel efficiency is achieved. Also, when the vehicle travels over wet roads or snow covered roads, the normally created air turbulance caused by the road wheels and the traverse axle, that collectively gather up the water or snow from the road ie.
is lodged in the tire threads and then spun off into the air as a wake of accumulated water or snow, as the case might be, inhibits visibility to overcoming and oncoming traffic so significantly that in severe cases the visibility is nil.
The fairings of the invention reduce the air turbulence and hence the extent of the wake and improve the visibility through whatever wake there is remaining to almost normal driving conditions (ie. as if there is no wetness or snow on the road).
TRAILER UNDERCARRIAGE FAIRINGS
INVENTOR
Bradley Paul MARTIN
ABSTRACT
An aerodynamic fairing for placement under the undercarriage of a tractor or a trailer or a straight truck as disclosed.
The fairing is placed in front of the transverse axle that carries road running wheels and preferably in advance of each of such axles. The fairing assists in air diversion and in the streamlining of air passing by such axle. Air turbulence is reduced and the drag on the vehicle, tractor or trailer is also reduced. Greater fuel efficiency is achieved. Also, when the vehicle travels over wet roads or snow covered roads, the normally created air turbulance caused by the road wheels and the traverse axle, that collectively gather up the water or snow from the road ie.
is lodged in the tire threads and then spun off into the air as a wake of accumulated water or snow, as the case might be, inhibits visibility to overcoming and oncoming traffic so significantly that in severe cases the visibility is nil.
The fairings of the invention reduce the air turbulence and hence the extent of the wake and improve the visibility through whatever wake there is remaining to almost normal driving conditions (ie. as if there is no wetness or snow on the road).
Description
-~` 1 1S6293 1his invention relates to undercarriage fairings for use on tractors, trailers and vehicles generally. It also has application on straight trucks.
With the increased concern of higher energy costs and the need to economize fleet operations in the movement o~ vehicles along our highways and bi-ways, cabin and roof top fairings have become popular as aerodynamic deflectors.
I have conceived of a novel aerodynamic deflector to be mounted as an undercarriage fairing unit in advance of the transverse axles that carry road running wheels. ~uch an undercarriage deflector has a concave surface to assist, in diverting the wind, travelling under the undercarriage or vehicle to travel down and around the transverse axle. As such it assists in eliminating, to a substantlal degree, air resistance impacting upon the axle and in a preferred embodiment as well about the tire surfaces; hence, air turbulence i8 reduced.
Such aerodynamic deflector located as an undercarriage fairing, also assists in reducing water spray generated by the vehicle running wheels as they roll along the highway as when the highway surface is wet or covcred with powdered snow. This is a result achieved by streamlining the air flow not only around the traverse axle, but about the rolling wheels. The reducing of air turbulance is the major factor in reducing the extent of the wake of water or snow s~ray that follows the trailer, or the straight truck, or the vehicle that uses fairings according to the invention. Conventionally, without fairings, the wake generated by such vehicles is dangerous, not only to a driver overtaking such vehicle but as well to a the driver approaching such vehicle, since in severe cases the visibility though the wake is perilously poor due to the .
wake being laiden with water spray and snow. Without undercarriage fairings of this invention there is an unnecessary danger and obstacle with water laiden and snow laiden wakes.
The deflector of the invention, thus creates streamlining, and a partial vacuum behind itself by creating a low pressure area in that anterior region. It consequently draws air including water and/or light snow from the outside wake region of the trailer. This eliminates, to a substantial degree, the extent of the wake, which when laiden with water and powdered snow or a mixture thereof decreases the visibility for drivers driving behind or for drivers converging on vehicles not equipped with such G;
undercarriage fairings. This result exists as well for tractor trailers and for straight trucks. Thus the invention achieves greater margins of safety for trailing and for passing vehicles.
In the balance of this disclosure the word "vehicle" shall include, tractors, trailers, and straight trucks.
The invention therefore contemplates an aerodynamic body for mounting beneath the undercarriage of a vehicle and in front of the transverse axle which depends from the undercarriage, the axle adapted to carry road running wheels, said body having an effective angle of attack in relation to the direction of travel of the undercarrige and comprising a wind deflection membrane with an aerodynamic striking surface generally concavely curved downward and rearwardly from an upper front portion to a lower rearward portion, the rearward portion being located at an elevation near the centre line of the transverse axle, the upper portion carried by the undercarrige ln advance of both the transverse axle and rearward lower portion such that wind striking the striking surface is deflected primarily downward toward the road and hence around the transverse axle as the vehicle moves into the wind.
~ uch fairings improve vehicle fuel efficiency by about 10~ by reducing aerodynamic drag and controlling turbulence; hence, fuel consumption is decreased.
The invention will now be described by way of example with reference to the accompanying drawings in which:
Figures 1 and 2 are perspective views of variations of the aerodynamic striking surface of the undercarriage fairing according to the invention.
Figure 3 illustrates the mounting of the aerodynamic undercarriage fairing deflector of Figure 1 in advance of a transverse axle suspended from the undercarriage of a vehicle whether tractor or trailer, or straight truck.
Figure 4 is a perspective, of the air flow over the aerodynamic surface of the fairing, as it passes by the road running wheels and transverse axle.
The aerodynamic deflector or fairing 10 consists of a concave aerodynamic surface 11, with a leading edge 12, and a lower trailing edge 13. The length of the leading and trailing edges 12 and 13 may be same (Figure 2) or the trailing edge may be greater than the leading edge tFigure 1) .
Referring to figure 3, a tractor 40 is shown pulling a trailer 20 with undercarriage 21 (figures 1 and
With the increased concern of higher energy costs and the need to economize fleet operations in the movement o~ vehicles along our highways and bi-ways, cabin and roof top fairings have become popular as aerodynamic deflectors.
I have conceived of a novel aerodynamic deflector to be mounted as an undercarriage fairing unit in advance of the transverse axles that carry road running wheels. ~uch an undercarriage deflector has a concave surface to assist, in diverting the wind, travelling under the undercarriage or vehicle to travel down and around the transverse axle. As such it assists in eliminating, to a substantlal degree, air resistance impacting upon the axle and in a preferred embodiment as well about the tire surfaces; hence, air turbulence i8 reduced.
Such aerodynamic deflector located as an undercarriage fairing, also assists in reducing water spray generated by the vehicle running wheels as they roll along the highway as when the highway surface is wet or covcred with powdered snow. This is a result achieved by streamlining the air flow not only around the traverse axle, but about the rolling wheels. The reducing of air turbulance is the major factor in reducing the extent of the wake of water or snow s~ray that follows the trailer, or the straight truck, or the vehicle that uses fairings according to the invention. Conventionally, without fairings, the wake generated by such vehicles is dangerous, not only to a driver overtaking such vehicle but as well to a the driver approaching such vehicle, since in severe cases the visibility though the wake is perilously poor due to the .
wake being laiden with water spray and snow. Without undercarriage fairings of this invention there is an unnecessary danger and obstacle with water laiden and snow laiden wakes.
The deflector of the invention, thus creates streamlining, and a partial vacuum behind itself by creating a low pressure area in that anterior region. It consequently draws air including water and/or light snow from the outside wake region of the trailer. This eliminates, to a substantial degree, the extent of the wake, which when laiden with water and powdered snow or a mixture thereof decreases the visibility for drivers driving behind or for drivers converging on vehicles not equipped with such G;
undercarriage fairings. This result exists as well for tractor trailers and for straight trucks. Thus the invention achieves greater margins of safety for trailing and for passing vehicles.
In the balance of this disclosure the word "vehicle" shall include, tractors, trailers, and straight trucks.
The invention therefore contemplates an aerodynamic body for mounting beneath the undercarriage of a vehicle and in front of the transverse axle which depends from the undercarriage, the axle adapted to carry road running wheels, said body having an effective angle of attack in relation to the direction of travel of the undercarrige and comprising a wind deflection membrane with an aerodynamic striking surface generally concavely curved downward and rearwardly from an upper front portion to a lower rearward portion, the rearward portion being located at an elevation near the centre line of the transverse axle, the upper portion carried by the undercarrige ln advance of both the transverse axle and rearward lower portion such that wind striking the striking surface is deflected primarily downward toward the road and hence around the transverse axle as the vehicle moves into the wind.
~ uch fairings improve vehicle fuel efficiency by about 10~ by reducing aerodynamic drag and controlling turbulence; hence, fuel consumption is decreased.
The invention will now be described by way of example with reference to the accompanying drawings in which:
Figures 1 and 2 are perspective views of variations of the aerodynamic striking surface of the undercarriage fairing according to the invention.
Figure 3 illustrates the mounting of the aerodynamic undercarriage fairing deflector of Figure 1 in advance of a transverse axle suspended from the undercarriage of a vehicle whether tractor or trailer, or straight truck.
Figure 4 is a perspective, of the air flow over the aerodynamic surface of the fairing, as it passes by the road running wheels and transverse axle.
The aerodynamic deflector or fairing 10 consists of a concave aerodynamic surface 11, with a leading edge 12, and a lower trailing edge 13. The length of the leading and trailing edges 12 and 13 may be same (Figure 2) or the trailing edge may be greater than the leading edge tFigure 1) .
Referring to figure 3, a tractor 40 is shown pulling a trailer 20 with undercarriage 21 (figures 1 and
2). There are a plurality of transverse axles 1~ each carrying a pair of road running wheels, either power driven 35 or passive wheels 45. In either case the leading edge 12 1 ~ 5B293 of the deflector 10 is mounted, perferably, in juxtaposition with the undercarriage 21 and in advance of the lower tracking edge 13. In some applications, it is impossible or not convenient to place the leading upper edge 1~ in juxtaposition with the undercarriage 21. In these applications, it is preferred that the leading edge be subjacent to the lowest extremity of the undercarriage 21 by no more than approximately 1~ inches. When this is done no adverse effects take place.
Those skilled in the art will appreciate that as the undercarriage 21 moves forward along its line of travel, whether the undercarriage be part of a trailing vehicle or trailer 20 or of the powering vehicle, as for example tractor 40, the speed of the air immediately adjacent to the undercarriage, has an effective speed, relative to the undercarriage, of zero; and, as one progressively moves orthogally away from the undercarriage 21 toward the road surface 55 the air speed dramatically increases to approach the speed of travel. Hence the aerodynamic body is designed to be located with its upper leading edge 12 in advance of both the transverse axle 18 of the undercarriage 21 and in advance of the trailing edge 13 of the fairing 10.
Referring to Figures 3 and 4, in such configurations as just explained the air will follow the flow paths indicated in figure 4 and be diverted around the transverse axle 18. The majority of air will travel through the space beneath the lower trailing edge 13 and the upper surface of the road 36 which space is generally indicated as reference 22 in figure 3.
It is preferred that the lower trailing edge 13 of the areodynamic deflector 10 be at an elevation at or the horizontal centre line of the transverse axle 18 by at least 1 l~B~93 approximately two or more inches; this dimension is designated distance "A" in Figure 3. The lower leading edge 13 is also located, preferably, in advance of the transverse axle 18 by about 6 inches in front of the frontal surface of the tire 45 and hence located from the axis 18 by approximately 6 inches plus the radius of the tire; this dimension is distance "B" in the Figure 3.
In applications where the vehicle travelling along the road is a tractor and trailer combination, as shown in figure 3, a plurality of undercarriage fairings 10 may be located for example one, 30, in advance of the power driven wheels 35 of the tractor 40, and the others in advance of each transverse axle 18 of the trailer 20 that carry the passive wheels 45 of the trailer 20. In applications where the trailer has more than one pair of passive wheels 45, for example those shown in phantom as 55 in Figure 3, a further aerodynamic body 10 may be placed as shown in phantom position at 60.
The means by which the fairing is attached to, or carried by, the undercarriage 21 is by any conventional means for example metal hardware that attaches directly to the undercarriage or similar convenient means. The fairing likewise may be attached instead to the transverse axle 18, by appropriate hardware.
Referring now to Figures 1 and 4 and the aerodynamic body or fairing 10, in Figure 1, has its lower trailing edge 13 longer than its upper leading edge 12. The marginal sides of the aerodynamic body 10 are thus concave sheets 16 that merge with the stirking surface 11 and with both edges 12 and 13. Such configuration deflects the wind, which flows underneath the undercarriage, out and around the trailing road running wheels 45 and beneath the undercarriage, out and around the trailing road running wheels 45 and beneath the transverse axle l~ in the manner shown in figure 4.
In another variation, and referring to figure 2, the upper leading edge 12 and the lower trailing edge 13 are of equal length or of equal dimension and hence each of the side margins 16 is converted from the concave sheet of figure 1 into a flat sheet as at 17. In this embodiment the air flow is not forced to flow over the wheels 45 as depicted in figure 4 but is forced to flow under the transverse axle 18. This embodiment is desirable in certain applications.
Those skilled in the art will appreciate that as the undercarriage 21 moves forward along its line of travel, whether the undercarriage be part of a trailing vehicle or trailer 20 or of the powering vehicle, as for example tractor 40, the speed of the air immediately adjacent to the undercarriage, has an effective speed, relative to the undercarriage, of zero; and, as one progressively moves orthogally away from the undercarriage 21 toward the road surface 55 the air speed dramatically increases to approach the speed of travel. Hence the aerodynamic body is designed to be located with its upper leading edge 12 in advance of both the transverse axle 18 of the undercarriage 21 and in advance of the trailing edge 13 of the fairing 10.
Referring to Figures 3 and 4, in such configurations as just explained the air will follow the flow paths indicated in figure 4 and be diverted around the transverse axle 18. The majority of air will travel through the space beneath the lower trailing edge 13 and the upper surface of the road 36 which space is generally indicated as reference 22 in figure 3.
It is preferred that the lower trailing edge 13 of the areodynamic deflector 10 be at an elevation at or the horizontal centre line of the transverse axle 18 by at least 1 l~B~93 approximately two or more inches; this dimension is designated distance "A" in Figure 3. The lower leading edge 13 is also located, preferably, in advance of the transverse axle 18 by about 6 inches in front of the frontal surface of the tire 45 and hence located from the axis 18 by approximately 6 inches plus the radius of the tire; this dimension is distance "B" in the Figure 3.
In applications where the vehicle travelling along the road is a tractor and trailer combination, as shown in figure 3, a plurality of undercarriage fairings 10 may be located for example one, 30, in advance of the power driven wheels 35 of the tractor 40, and the others in advance of each transverse axle 18 of the trailer 20 that carry the passive wheels 45 of the trailer 20. In applications where the trailer has more than one pair of passive wheels 45, for example those shown in phantom as 55 in Figure 3, a further aerodynamic body 10 may be placed as shown in phantom position at 60.
The means by which the fairing is attached to, or carried by, the undercarriage 21 is by any conventional means for example metal hardware that attaches directly to the undercarriage or similar convenient means. The fairing likewise may be attached instead to the transverse axle 18, by appropriate hardware.
Referring now to Figures 1 and 4 and the aerodynamic body or fairing 10, in Figure 1, has its lower trailing edge 13 longer than its upper leading edge 12. The marginal sides of the aerodynamic body 10 are thus concave sheets 16 that merge with the stirking surface 11 and with both edges 12 and 13. Such configuration deflects the wind, which flows underneath the undercarriage, out and around the trailing road running wheels 45 and beneath the undercarriage, out and around the trailing road running wheels 45 and beneath the transverse axle l~ in the manner shown in figure 4.
In another variation, and referring to figure 2, the upper leading edge 12 and the lower trailing edge 13 are of equal length or of equal dimension and hence each of the side margins 16 is converted from the concave sheet of figure 1 into a flat sheet as at 17. In this embodiment the air flow is not forced to flow over the wheels 45 as depicted in figure 4 but is forced to flow under the transverse axle 18. This embodiment is desirable in certain applications.
Claims (8)
1. An aerodynamic body for mounting beneath the undercarriage of a vehicle and in front of the transverse axle which depends from the undercarriage, the axle adapted to carry road running wheels, said body having an effective angle of attack in relation to the direction of travel of the undercarrige and comprising a wind deflection membrane with an aerodynamic striking surface generally concavely curved downward and rearwardly from an upper front portion to a lower rearward portion, the rearward portion being located at an elevation near the centre line of the transverse axle, the upper portion carried by the undercarrige in advance of both the transverse axle and rearward lower portion such that wind striking the striking surface is deflected primarily downward toward the road and hence around the transverse axle as the vehicle moves into the wind.
2. The aerodynamic deflection as claimed in claim 1 wherein the wind deflection membrane is a rigid sheet surface.
3. The aerodynamic deflector as claimed in claim 1 where in the lower trailing edge is at an elevation at the centre line of the transverse axle.
4. The aerodynamic deflector as claimed in claim 1 wherein the deflector is located with the lower trailing edge in advance of the transverse axle by at least the diameter of the road running wheels.
5. The aerodynamic deflector as claimed in claim 1, 2 or 3 wherein the length of the lower trailing edge is not greater than that of the upper leading edge.
6. The aerodynamic deflector as claimed in claim 1, 2 or 3 wherein the length of the lower trailing edge is not greater than that of the upper leading edge and there is defined straight lateral margins between both edges.
7. The aerodynamic deflector as claimed in claim 1, 2 or 3 wherein the lower trailing edge is greater in length than the upper leading edge.
8. The aerodynamic deflector as claimed in claim 1, 2 or 3 wherein the lower trailing edge is a greater in length than the upper leading edge and lateral side margins of the aerodynamic deflector are continous concave sheets extending from the leading edge to the trailing edge, in a manner that continuously merge with the striking surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000370718A CA1156293A (en) | 1981-02-12 | 1981-02-12 | Trailer undercarriage fairings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000370718A CA1156293A (en) | 1981-02-12 | 1981-02-12 | Trailer undercarriage fairings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1156293A true CA1156293A (en) | 1983-11-01 |
Family
ID=4119173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000370718A Expired CA1156293A (en) | 1981-02-12 | 1981-02-12 | Trailer undercarriage fairings |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1156293A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640541A (en) * | 1985-09-17 | 1987-02-03 | Fitzgerald Corporation | Under-trailer air deflector |
| EP0888956A1 (en) * | 1997-07-04 | 1999-01-07 | Volkswagen Aktiengesellschaft | Undersurface near the rear axle of a motor vehicle |
| US6079769A (en) * | 1999-03-01 | 2000-06-27 | Fannin; Dawn B. | Retractable air turbulence device for vehicles |
| EP1880928A3 (en) * | 2006-07-18 | 2008-08-20 | Nissan Motor Co., Ltd. | Under cover |
| WO2009055526A2 (en) * | 2007-10-23 | 2009-04-30 | Lawrence Livermore National Security, Llc | Vehicle underbody fairing |
| US20110068605A1 (en) * | 2009-09-23 | 2011-03-24 | Aerodynamic Trailer Systems, Llc | Undercarriage fairing |
| US20110272963A1 (en) * | 2010-05-06 | 2011-11-10 | Henderson Michael Lorenzo | Devices and Methods for Reducing Vehicle Drag |
| GB2498810A (en) * | 2012-01-30 | 2013-07-31 | Wirth Res Ltd | Drag reducer under vehicle sides |
| GB2513541A (en) * | 2013-02-08 | 2014-11-05 | Swift Group Ltd | Device for improving aerodynamics of vehicles |
| US9027686B2 (en) * | 2011-10-12 | 2015-05-12 | Volvo Group North America, Llc | Truck fairing |
| US9056636B2 (en) | 2010-05-06 | 2015-06-16 | Smarttruck Systems, Llc | Devices and methods for reducing vehicle drag |
| FR3028831A1 (en) * | 2014-11-26 | 2016-05-27 | Peugeot Citroen Automobiles Sa | VEHICLE WITH AIR DEFLECTOR FOR WHEEL |
| EP2917093A4 (en) * | 2012-11-07 | 2016-08-03 | Stormblok Systems Inc | Multicomponent improved vehicle fuel economy system |
| AU2016206276B2 (en) * | 2010-05-06 | 2018-05-17 | Transtex Llc | Devices and methods for reducing vehicle drag |
| US20190111978A1 (en) * | 2012-11-07 | 2019-04-18 | Ekostinger, Inc. | Multicomponent improved vehicle fuel economy system |
-
1981
- 1981-02-12 CA CA000370718A patent/CA1156293A/en not_active Expired
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4640541A (en) * | 1985-09-17 | 1987-02-03 | Fitzgerald Corporation | Under-trailer air deflector |
| EP0888956A1 (en) * | 1997-07-04 | 1999-01-07 | Volkswagen Aktiengesellschaft | Undersurface near the rear axle of a motor vehicle |
| US6079769A (en) * | 1999-03-01 | 2000-06-27 | Fannin; Dawn B. | Retractable air turbulence device for vehicles |
| US7661752B2 (en) | 2006-07-18 | 2010-02-16 | Nissan Motor Co., Ltd. | Under cover |
| EP1880928A3 (en) * | 2006-07-18 | 2008-08-20 | Nissan Motor Co., Ltd. | Under cover |
| WO2009055526A2 (en) * | 2007-10-23 | 2009-04-30 | Lawrence Livermore National Security, Llc | Vehicle underbody fairing |
| WO2009055526A3 (en) * | 2007-10-23 | 2009-06-04 | L Livermore Nat Security Llc | Vehicle underbody fairing |
| US7828368B2 (en) | 2007-10-23 | 2010-11-09 | Lawrence Livermore National Security, Llc | Vehicle underbody fairing |
| US20110068605A1 (en) * | 2009-09-23 | 2011-03-24 | Aerodynamic Trailer Systems, Llc | Undercarriage fairing |
| US8276972B2 (en) * | 2009-09-23 | 2012-10-02 | Aerodynamic Trailer Systems, Llc | Undercarriage fairing |
| US9056636B2 (en) | 2010-05-06 | 2015-06-16 | Smarttruck Systems, Llc | Devices and methods for reducing vehicle drag |
| US20110272963A1 (en) * | 2010-05-06 | 2011-11-10 | Henderson Michael Lorenzo | Devices and Methods for Reducing Vehicle Drag |
| US8342595B2 (en) * | 2010-05-06 | 2013-01-01 | SmartTruckSystems, LLC | Devices and methods for reducing vehicle drag |
| AU2016206276B2 (en) * | 2010-05-06 | 2018-05-17 | Transtex Llc | Devices and methods for reducing vehicle drag |
| US9027686B2 (en) * | 2011-10-12 | 2015-05-12 | Volvo Group North America, Llc | Truck fairing |
| GB2498810A (en) * | 2012-01-30 | 2013-07-31 | Wirth Res Ltd | Drag reducer under vehicle sides |
| GB2498810B (en) * | 2012-01-30 | 2018-12-26 | Wirth Res Limited | Drag reduction device and a vehicle comprising the device |
| EP2917093A4 (en) * | 2012-11-07 | 2016-08-03 | Stormblok Systems Inc | Multicomponent improved vehicle fuel economy system |
| US20190111978A1 (en) * | 2012-11-07 | 2019-04-18 | Ekostinger, Inc. | Multicomponent improved vehicle fuel economy system |
| US10953932B2 (en) | 2012-11-07 | 2021-03-23 | Ekostinger, Inc. | Multicomponent improved vehicle fuel economy system |
| GB2513541A (en) * | 2013-02-08 | 2014-11-05 | Swift Group Ltd | Device for improving aerodynamics of vehicles |
| FR3028831A1 (en) * | 2014-11-26 | 2016-05-27 | Peugeot Citroen Automobiles Sa | VEHICLE WITH AIR DEFLECTOR FOR WHEEL |
| WO2016083682A1 (en) * | 2014-11-26 | 2016-06-02 | Peugeot Citroen Automobiles Sa | Vehicle with air deflector for wheel |
| CN107107971A (en) * | 2014-11-26 | 2017-08-29 | 标致雪铁龙集团 | Vehicle with the air deflector for wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |