Measuring and testing – Tire – tread or roadway
Reexamination Certificate
2006-04-21
2009-11-10
Allen, Andre J (Department: 2855)
Measuring and testing
Tire, tread or roadway
C073S008000, C702S148000
Reexamination Certificate
active
07614292
ABSTRACT:
Repeated small irregularity, i.e. defect in outer shape on a sidewall portion S of a pneumatic tire T is detected. An order analysis is performed in higher order by an order analysis means24based on a waveform measured the irregularity on the sidewall portion S of the pneumatic tire T along the circumferential direction to calculate the value of the small irregularity at this order, and then the defect in outer shape is decided if the value of the small irregularity exceeds an allowable value. Thus, a pneumatic tire T of which small irregularity of certain order exceeding the allowable value is repeatedly formed in the circumferential direction on the sidewall portion S can be easily and certainly rejected as a defective tire.
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Allen Andre J
Bridgestone Corporation
Sughrue & Mion, PLLC
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