초록

The present invention is directed to a device for reducing drag on a vehicle. The device comprises a sheet of material and a plurality of depressions/elevations. The sheet of material having a base portion and an apex extending from the base portion.

대표청구항 ▼

1. A device for reducing drag on a vehicle, the device comprising: a sheet of material shaped to fit a rear portion of a vehicle, the sheet of material having a base portion and an apex extending a specific distance from the base portion; anda plurality of depressions disposed on the sheet of materi

1. A device for reducing drag on a vehicle, the device comprising: a sheet of material shaped to fit a rear portion of a vehicle, the sheet of material having a base portion and an apex extending a specific distance from the base portion; anda plurality of depressions disposed on the sheet of material to reduce the drag on the vehicle. 2. The device of claim 1 wherein the plurality of depressions are circular-shaped and have a diameter and a depth. 3. The device of claim 2 wherein the diameter of the circular-shaped depressions is in a range selected from the group consisting of from about ⅛th of an inch to about 8 inches, from about 0.5 inches to about 4 inches, and from about 1.5 inches to about 3.5 inches. 4. The device of claim 1 wherein the apex extends from the base portion a distance in a range selected from the group consisting of from about 1 foot to about 5 feet and from about 3.5 feet to about 5 feet. 5. The device of claim 2 wherein the depth of the circular-shaped depressions is in a range of from about 1/16th of an inch to about 6 inches. 6. The device of claim 2 wherein the depth of the circular-shaped depressions is in a range of from about ⅛th of an inch to about 2 inches. 7. The device of claim 2 wherein the depth of the circular-shaped depressions is in a range of from about 0.25 inches to about 0.75 inches. 8. The device of claim 1 wherein the sheet of material is provided in a plurality of parts. 9. The device of claim 1 wherein the sheet of material can be hingedly attached to the rear portion of the vehicle and the rear portion of the vehicle is the rear portion of a trailer of a tractor-trailer truck. 10. The device of claim 1 wherein the depressions cover substantially all of the sheet of material.