The present invention provides improved spoke edge geometry for a non- pneumatic or hybrid tire that is less prone to fatigue when used. The present invention also provides a way to manufacture such geometry in a mold, In particular the spoke edge geometry is provided with a reduced cross-section that reduces the bending stresses locally and allows a unique mold construction that changes the placement and orientation of potential flash and reduces other potential molding flaws when a liquid such as polyurethane is introduced into the cavity of the mold to form a spoke. This change results in a reduction in the possibility of a stress riser being found near the edge of the spoke, enhancing the durability of the tire.
申请公布号
WO2012030519(A3)
申请公布日期
2012.07.05
申请号
WO2011US47864
申请日期
2011.08.16
申请人
MICHELIN RECHERCHE ET TECHNIQUE S.A.;SOCIETE DE TECHNOLOGIE MICHELIN;CRON, STEVEN, M.;DOTSON, MICHAEL, EDWARD;MILES, KEVIN, C.;RHYNE, TIMOTHY, BRETT