Pneumatic tire with varying angle lug grooves

Details Pneumatic tire with varying angle lug grooves Pneumatic tire with varying angle lug grooves

1992-10-19

1994-11-22

Ball, Michael

Resilient tires and wheels

Tires, resilient

Anti-skid devices

B60C 1108

Patent

active

053659872

ABSTRACT:
A pneumatic tire of the type wherein a plurality main grooves extending in a tire circumferential direction are so disposed on a tread surface as to define a plurality of rib lines and a plurality of lug grooves are so disposed in said rib lines as to define a plurality of blocks, characterized in that lug groove angles in each of the rib lines to the tire circumferential direction are changed within a range of a maximum-to-minimum ratio of 1.1 to 1.4 as a repeating unit of a geometric progression, and the lug groove angles in the rib lines positioned on the shoulder side to the tire circumferential direction are set to be greater than the lug groove angles in the rib lines positioned on the center side to the tire circumferential direction.

REFERENCES:
patent: 1956011 (1934-04-01), Evans
patent: 4057089 (1977-11-01), Johannsen
patent: 4777993 (1988-10-01), Yamashita et al.
patent: 4823853 (1989-04-01), Hazky

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