PNEUMATIC TIRE Russian patent published in 2012 - IPC B60C13/02 

FIELD: transport.

SUBSTANCE: invention relates to automotive tire side wall provided with indication part displaying trade mark, model, shape etc. it has multiple recesses 22 made on the surface of every figure 21 of the first indication part 20. Recesses 22 are arranged to extend along tire circle and lined up in direction crossing that of motion. Both end sides over recess width are composed by curvilinear surfaces with center of curvature located outside of the tire in direction of its width. Therefore, gradual transition/luminance range displays at curvilinear surface of every recess 22. Said luminance range varies depending upon direction of vision or illumination. Hence, every figure 21 in first indication part 20 looks three-dimensional to get more marked than other parts of side wall 10.

EFFECT: better sighting of indication part.

21 cl, 43 dwg