Patent ID: 7134467
Filing Date: 2006-11-14
Classification: B60C,Y10S

Abstract:
1. A radial ply pneumatic tire for construction/industrial/OTR applications, the tire having a casing the casing having at least one ply reinforced by rubber coated cords, a pair of annular extending bead cores, the at least one ply being wrapped about each bead core and extending therebetween, a belt reinforcing structure, and a tread disposed radially outward of the casing, the tread having an inner tread base, two lateral edges, the distance halfway between the lateral edges define the tread equatorial plane and a plurality of lugs extending radially outwardly from the inner tread base, the tire characterized by: the tread comprising three separated rows of lugs, a first row extending axially inwardly from a first shoulder region of the tread, a second row extending axially inwardly from a second shoulder region of the tread, and a central row positioned between the first and second rows, the lugs of the first row being similar in shape but opposite in orientation relative to the lugs of the second row, each lug in the first and second rows being divided by a first transverse bar of reduced height and connects at an inward end to a central lug by a second transverse bar of reduced height, each lug of the first row lying within a first tread half, each lug of the second row lying within a second tread half, the lugs of the central row lying in both the first tread half and second tread half; wherein the reduced height of the first and second reduced height transverse bars is approximately ten percent (10%) of the nominal height of the lugs of the first and second rows.