Patent ID: 11865800
Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 5:
6. The tire mold according to claim 4, wherein
any position that is on the virtual line of the back side surface and that is between the shoulder reference boundary point and the shoulder reference virtual point of intersection is a shoulder vertical point,
a circular arc that passes through the shoulder vertical point and that is tangent to the reference forming surface at the shoulder reference tangent point is a shoulder tangent point-side circular arc,
any position that is on the reference forming surface and that is between the shoulder reference tangent point and the shoulder reference virtual point of intersection is a shoulder horizontal point,
a point of intersection of the shoulder tangent point-side circular arc and a normal line that passes through the shoulder horizontal point and that is normal to the reference forming surface is a shoulder intermediate boundary point,
a circular arc that passes through the shoulder reference boundary point and that is tangent to the shoulder tangent point-side circular arc at the shoulder intermediate boundary point is a shoulder boundary-side circular arc,
of a contour of the shoulder land surface-forming portion, a contour from the shoulder reference tangent point to the shoulder intermediate boundary point is represented by the shoulder tangent point-side circular arc, and a contour from the shoulder intermediate boundary point to the shoulder reference boundary point is represented by the shoulder boundary-side circular arc,
a distance from the shoulder reference virtual point of intersection to the shoulder vertical point is equal to the distance from the reference virtual point of intersection to the vertical point, and
a distance from the shoulder reference virtual point of intersection to the shoulder horizontal point is equal to the distance from the reference virtual point of intersection to the horizontal point.