Patent ID: 8863795
Filing Date: 2014-10-21
Classification: B60C,Y10S

Abstract:
1. A vehicle wheel tire comprising: a tire tread having a circumferential center tread region comprising a plurality of block elements arranged in a symmetric pattern on opposite sides of a tire circumferential equatorial centerplane, wherein the tread has at least one circumferential groove bounded by edges of opposing first and second block elements; the first block element comprising an upper block edge between an upper block surface and a side block surface, the upper block surface of the first block element being at a tread surface of the tire tread, the side block surface of the first block element defining part of one groove wall surface of the circumferential groove and extending toward the bottom of the circumferential groove, the upper block edge of the first block element being indented such that, at the upper block surface of the first block element, the indented edge comprises a main edge connecting a pair of end edges, the first block element comprising a first array of saw-teeth extending between the pair of end edges of the indented edge of the first block element, the first array of saw-teeth comprising a tooth having a first surface, a second surface and a third surface, the first surface extending to the tread surface and being inclined with respect to the radial direction, the second surface being a tooth side surface and the third surface defining part of the side block surface of the first block element, wherein an indented surface spaced in the axial direction from the side block surface of the first block element is formed between an inclined surface of the first array of saw-teeth and the main edge of the indented edge of the first block element; the second block element comprising an upper block edge between an upper block surface and a side block surface, the upper block surface of the second block element being at the tread surface of the tire tread, the side block surface of the second block element defining part of the other groove wall surface of the circumferential groove and extending toward the bottom of the circumferential groove, the upper block edge of the second block element being indented such that, at the upper block surface of the second block element, the indented edge comprises a main edge connecting a pair of end edges, the second block element comprising a second array of saw-teeth extending between the pair of end edges of the indented edge of the second block element, the second array of saw-teeth comprising a tooth having a first surface, a second surface and a third surface, the first surface extending to the tread surface and being inclined with respect to the radial direction, the second surface being a tooth side surface and the third surface defining part of the side block surface of the second block element, wherein an indented surface spaced in the axial direction from the side block surface of the second block element is formed between an inclined surface of the second array of saw-teeth and the main edge of the indented edge of the second block element.