Inspection method and apparatus for uneven marks on tire

Details Inspection method and apparatus for uneven marks on tire Inspection method and apparatus for uneven marks on tire

2005-05-18

2008-03-18

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Tire, tread or roadway

C073S146500

Reexamination Certificate

active

07343789

ABSTRACT:
There are provided an inspection method of tire uneven marks capable of judging defect of three-dimensional form of the mark in a higher reliability without depending on a brightness distribution image of unevenness, and an inspection apparatus of tire uneven marks. The inspection method of tire uneven marks comprises a step of measuring heights of unevenness inclusive of marks to be inspected with respect to each area element in a predetermined tire surface region to acquire unevenness distribution data, a step of specifying a tire surface portion corresponding to a mark model in the tire surface region from data of three-dimensional form of a mark model previously prepared as a template of the each mark and the above acquired unevenness distribution data, and a step of determining a coincidence between the unevenness distribution data of the specified tire surface portion with respect to the each mark and data of three-dimensional form of the mark model to judge an acceptance of the three-dimensional form of the mark based on the coincidence.

REFERENCES:
patent: 6539788 (2003-04-01), Mancosu et al.
patent: 2007/0204684 (2007-09-01), Muhlhoff et al.
patent: 7-152860 (1995-06-01), None
patent: 7-237270 (1995-09-01), None
patent: 2003-240521 (2003-08-01), None

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