US 12,466,216 B2
Non-pneumatic tire having support structure with stress-concentration reduction features
Benjamin E. Rimai, Copley, OH (US); Bradley S. Plotner, Canton, OH (US); Brandon P. Nelson, Stow, OH (US); Timothy M. Lusk, Akron, OH (US); and Andrew V. Haidet, Tallmadge, OH (US)
Assigned to Bridgestone Americas Tire Operations, LLC, Nashville, TN (US)
Appl. No. 18/009,829
Filed by Bridgestone Americas Tire Operations, LLC, Nashville, TN (US)
PCT Filed Jun. 15, 2021, PCT No. PCT/US2021/037429
§ 371(c)(1), (2) Date Dec. 12, 2022,
PCT Pub. No. WO2022/005741, PCT Pub. Date Jan. 6, 2022.
Claims priority of provisional application 63/045,339, filed on Jun. 29, 2020.
Prior Publication US 2023/0219366 A1, Jul. 13, 2023
Int. Cl. B60C 7/14 (2006.01); B60B 9/26 (2006.01); B60C 7/18 (2006.01)
CPC B60C 7/146 (2021.08) [B60B 9/26 (2013.01); B60C 7/143 (2013.01); B60C 7/18 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A non-pneumatic tire comprising:
a lower ring having a first diameter;
an upper ring having a second diameter greater than the first diameter, the upper ring being substantially coaxial with the lower ring;
a plurality of spokes extending between the lower ring and the upper ring, each one of the plurality of spokes including:
a first face and a second face opposite the first face, and
a first axial edge and a second axial edge, the first and second axial edges spacing the first face from the second face,
wherein at least one of the first edge and the second edge has a semi-elliptical cross section, the semi-elliptical cross section geometry having a semi-major axis and a semi-minor axis, a length of the semi-major axis being greater than a length of the semi-minor axis.