Tread for a pneumatic tire

Details Tread for a pneumatic tire Tread for a pneumatic tire

1984-07-18

1986-03-11

Ball, Michael

Resilient tires and wheels

Tires, resilient

Anti-skid devices

D12142, B60C 1106

Patent

active

045748560

ABSTRACT:
A tread portion for an all season tire comprises a plurality of projecting elements defined by sets of zig-zag grooves. Preferably a central rib extends circumferentially about the tire. A set of primary zig-zag grooves extends generally axially inwardly from each axial edge of the tread. Each of the primary zig-zag grooves extends from the respective axial edge 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 extend generally axially outwardly from the axially innermost segments 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.

REFERENCES:
patent: 4057089 (1977-11-01), Johannsen
patent: 4424843 (1984-01-01), Fontaine et al.

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