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1. (WO2016054278) A TIRE TREAD COMPRISING VARIABLE THICKNESS SIPES WITH MULTIPLE AREAS OF REDUCED THICKNESS

Pub. No.:    WO/2016/054278    International Application No.:    PCT/US2015/053346
Publication Date: Fri Apr 08 01:59:59 CEST 2016 International Filing Date: Thu Oct 01 01:59:59 CEST 2015
IPC: B60C 11/12
Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
MICHELIN RECHERCHE ET TECHNIQUE S.A.
LAWSON, Robert Cecil
KOSE, Sadi
Inventors: LAWSON, Robert Cecil
KOSE, Sadi
Title: A TIRE TREAD COMPRISING VARIABLE THICKNESS SIPES WITH MULTIPLE AREAS OF REDUCED THICKNESS
Abstract:
The present invention includes tire treads (10) and a method for forming tire treads (10) having a sipe (18) with a length extending between opposing terminal ends of the sipe and having a height and a thickness which is variable across the length and height of the sipe. The thickness of the sipe (18) includes a sipe portion arranged between the opposing terminal ends defining the sipe length and having a thick portion extending at least partially around a perimeter of a thin portion. The thin portion is substantially 0.2 millimeters or less thick and forms at least 40% of the surface area along each of the opposing sides of the sipe, the opposing sides being arranged on opposing sides of the sipe thickness.