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US 2016/0097708 A1Published application
Drag sled and methods of using the same
OwnerRolin F. Barrett, JR.inventor
Life of this patent
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Abstract
A drag sled having a sled body defining a curved front end and a lower surface to which tire samples are removable affixed is disclosed, as are methods of employing the drag sled to calculate coefficient of friction and vehicle speeds. In some embodiments, the tire sample is substantially similar to the tire in question.
Claims8
A drag sled for calculating the coefficient of friction between a tire in question and a test surface, the drag sled comprising:
- a sled body, having a curved front end and defining a lower surface;
- and
- a tire sample, having a tread surface, wherein the tire sample is sized and configured to be removably affixed to the lower surface of the sled body such that the tread surface faces the test surface.
A kit for evaluating coefficient of friction of a surface, the kit comprising:
- a sled body, having a curved front end and defining a lower surface;
- and
- a plurality of tire samples, each sized and configured to be removably affixed to the lower surface of the sled body, and each representing a different model of tire.
A method of calculating the speed of a vehicle based upon braking skid marks left by that vehicle, comprising:
- employing a drag sled having a tire sample in contact with a test surface, wherein the tire sample is obtained from substantially the same brand and/or model tire, as the vehicle in question.
Dependencies are inferred from the claim text.