B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/124
B60C 11/06 (1985.01)
Patent
CA 1234342
Abstract of the Disclosure TREAD FOR A PNEUMATIC TIRE A tread portion (12) for a pneumatic tire (10) comprises a plurality of projecting elements (14) defined by sets of grooves. Preferably, the grooves are zig-zag grooves and a central rib (16) extends circumferentially about the tire. A set of primary zig-zag grooves (18,19) extends generally axially inwardly from each axial edge (TE1, TE2) of the tread. The axially outermost segment (21) of each of the grooves (18) of the first set of primary zig-zag grooves extends from the first axial edge (TE1) of the tread in one generally circumferential direction of the tire, and the remainder of the segments of each of the grooves of the first set of primary zig-zag grooves extend in an opposite generally circumferential direction of the tire. Each of the grooves (19) of the second set of primary zig-zag grooves extends from the second axial edge (TE2) of the tread to the axially inner end of the groove in only one generally circumferential direction of the tire along its entire length. Sets of secondary zig-zag grooves (20) extend generally axially outwardly from the axially innermost segments (30,34) of the primary zig-zag grooves and intersect two or more primary zig-zag grooves, but do not intersect an axial edge of the tread.
484444
Sim & Mcburney
The Goodyear Tire & Rubber Company
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