B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
B60C 11/11 (2006.01) B60C 11/12 (2006.01) B60C 11/16 (2006.01)
Patent
CA 2320831
The present invention relates to a winter tyre of a vehicle, the tread (1) whereof being provided with tread pattern blocks (11) and with mainly circumferential (a-e) grooves separating said blocks from each other, and with grooves (j-o) transverse to the circumferential grooves, the rows (A-F) of tread pattern blocks between said circumferential grooves being displaced relative to each other so that the tread pattern blocks adjacent in axial direction of the tyre are overlapping, and said tread pattern blocks being provided with sipes (8a, 9a) opening to the tread and into the tyre with the purpose of increasing the grip of the tread with the road surface. The winter tyre is characterized in that the overlapping and in the axial direction of the tyre adjacent tread pattern blocks are connected in pairs with each other into double tread pattern blocks (2) with a bridge part (3) connecting one end of an adjacent side edge (4) of one tread pattern block and the opposite end of an adjacent side edge (5) of another tread pattern block with each other to form a bridge zone and wing parts (6a, 6b) formed from the connected tread elements (2a, 2b) and extending therefrom in opposite directions, and in that the length of the bridge part (3), when viewed in the axial direction of the tyre, is equivalent to the width of the groove (c) between the connected double tread elements (2a, 2b), that the bridge zone is provided with a long sipe (7) extending from one circumferential outer edge thereof to the opposite outer edge thereof, and that the long sipe (7) is discontinued from the area (13) surrounding the bore (12) for anti-skid studs, if an anti-skid stud with the support area is arranged in the area of the long sipe.
Gowling Lafleur Henderson Llp
Nokian Tyres Plc
LandOfFree
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