Method of designing tread pattern having three-dimensional...

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

Reexamination Certificate

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Details

C152S209200, C152S209300, C152S209240, C703S001000, C703S006000, C703S008000

Reexamination Certificate

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07625456

ABSTRACT:
A vehicle tire includes a tread provided with a tread pattern, which is made up of circumferentially arranged design units having a plurality of pitch lengths Pi (i=l to j) including a minimum pitch length Pl and a maximum pitch length Pj. Each of the design units has at least one groove with side walls each having an inclination angle αi in a cross section parallel to the tire equator, and the inclination angle α1 in the design unit having the minimum pitch length P1is less than the inclination angle αj in the design unit having the maximum pitch length Pj, whereby the rigidity difference between the design units having different pitch lengths is decreased. Preferably, the angle αi in a design unit having a pitch length Pi is not more than the angle αi+1 in a design unit having the next longer pitch length Pi+1.

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Translation for Japan 01-314620 dated Mar. 20, 2009.

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