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

Claim 3:
4. The tire mold according to claim 1, wherein
any position that is on a virtual line of the reference side surface and that is between the reference boundary point and the reference virtual point of intersection is a vertical point,
a circular arc that passes through the vertical point and that is tangent to the reference forming surface at the reference tangent point is a tangent point-side circular arc,
any position that is on the reference forming surface and that is between the reference tangent point and the reference virtual point of intersection is a horizontal point,
a point of intersection of the tangent point-side circular arc and a normal line that passes through the horizontal point and that is normal to the reference forming surface is an intermediate boundary point,
a circular arc that passes through the reference boundary point and that is tangent to the tangent point-side circular arc at the intermediate boundary point is a boundary-side circular arc, and
of the contour of the curved land surface-forming portion, a contour from the reference tangent point to the intermediate boundary point is represented by the tangent point-side circular arc, and a contour from the intermediate boundary point to the reference boundary point is represented by the boundary-side circular arc.