Data processing: measuring – calibrating – or testing – Measurement system – Dimensional determination
Reexamination Certificate
2007-02-06
2007-02-06
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system
Dimensional determination
C702S145000
Reexamination Certificate
active
10491246
ABSTRACT:
It is possible to significantly reduce a prediction error of the high-speed RFV and the high-speed TFV in a tire having a large PRO growth amount at high speed. Three or more sample tires are extracted from each lot. The PRO and RFV are measured and the least-square method is used to predict (100) the upper and lower and front and back natural angle frequency, attenuation ratio, upper and lower spring constant, and rolling radius coefficient. By using the PRO measurement apparatus, the PRO during idling is measured. By using an AAV measurement apparatus, an actual measurement value AAVLof the angle acceleration fluctuation at a low speed is measured (102). The PRO and AAV at a high speed are predicted (104) and the actual measurement value and prediction value are used to predict the high-speed RFV and TFV.
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“Advanced Technology for Improvement of Motion and Safety of Tire-Automobile System”; No. 9803 JSAE Symposium, edited by Tire Motion Characteristics Expert Committee and Active Safety Assessment Technology Expert Committee, Mar. 15, 1998, Japan Automobile Engineers Society, pp. 30-35.
Barlow John
Bridgestone Corporation
Moffat Jonathan
Sughrue & Mion, PLLC
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