Method for measuring tire wear using intensity of reflected light
First Claim
1. A method of measuring tire wear on a tread surface, comprising the steps of:
- applying a single layer of reflective paint to said tread surface of said tire,measuring an intensity of light reflected from said single layer of reflective paint while said single layer is on said tread surface of said tire to obtain a first light intensity value,then running said tire for a short distance to partially wear said single layer of reflective paint,then remeasuring said intensity of light reflected from said single layer of reflective paint while said single layer is on said tread surface of said tire to obtain a second light intensity value, andcomparing said first light intensity value with said second light intensity value.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of testing wear of tires is presented. It comprises applying a single layer of reflective paint to a tread surface by spraying, and then measuring the intensity of light reflected from a matrix of blocks on the unworn tire. The tire is then run for a short distance and the wear on the tire is assessed by measuring the intensity of light at each block compared to the intensity before the test run. The wear rate is clearly indicated by the changing levels of intensity of reflected light. Multiple colors or layers of paint are unnecessary. Tread wear can be measured with greater accuracy than achieved by other paint tests. The test run can be considerably shorter than test runs utilizing other methods.
35 Citations
9 Claims
-
1. A method of measuring tire wear on a tread surface, comprising the steps of:
-
applying a single layer of reflective paint to said tread surface of said tire, measuring an intensity of light reflected from said single layer of reflective paint while said single layer is on said tread surface of said tire to obtain a first light intensity value, then running said tire for a short distance to partially wear said single layer of reflective paint, then remeasuring said intensity of light reflected from said single layer of reflective paint while said single layer is on said tread surface of said tire to obtain a second light intensity value, and comparing said first light intensity value with said second light intensity value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method of measuring tire wear on a tread surface of a tire, comprising the steps of:
-
applying a single layer of reflective paint to said tread surface of said tire, applying a single layer of said reflective paint to a sidewall of said tire, running said tire for a short distance to partially wear said single layer of reflective paint, measuring an intensity of light reflected from said sidewall of said tire to obtain a first light intensity value, measuring said intensity of light reflected from said tread surface of said tire to obtain a second light intensity value, and comparing said first light intensity value with said second light intensity value.
-
Specification