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
CA2809791(A1)
申请公布日期
2012.03.08
申请号
CA20112809791
申请日期
2011.08.16
申请人
MICHELIN RECHERCHE ET TECHNIQUE S.A.;COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
发明人
CRON, STEVEN M.;DOTSON, MICHAEL EDWARD;MILES, KEVIN C.;RHYNE, TIMOTHY BRETT