Heavy duty pneumatic tire tread

Details Heavy duty pneumatic tire tread Heavy duty pneumatic tire tread

1982-09-17

1984-11-27

Boland, Lois E.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

D12142, B60C 1108, B60C 1112

Patent

active

044846100

ABSTRACT:
A heavy duty pneumatic tire tread includes a tread portion formed of five ribs separated by four circumferential zig-zag grooves, wherein each groove is made up of successive circumferentially and obliquely alternating one-half pitches having two different lateral widths, each of which remains substantially constant throughout its circumferential extent and wherein, within each one-half groove pitch, when viewed in the lateral direction, the lateral widths of the center grooves are of a first width whereas the lateral widths of the shoulder grooves are in the second width. The oblique angulation of the zig-zag grooves, relative to the circumferential direction of the tire changes every one-half pitch, with the degree of angulation, when viewed in a lateral direction, differing from the center grooves to the shoulder grooves.

REFERENCES:
patent: D208132 (1967-07-01), Wittenmyer
patent: D220739 (1971-05-01), Bartlett
patent: D222322 (1971-10-01), Pope
patent: D251187 (1979-02-01), Mirtain et al.
patent: D251661 (1979-04-01), Grosch et al.
patent: D253642 (1979-12-01), Amarger
patent: D261380 (1981-10-01), Amarger
patent: D262281 (1981-12-01), Candiliotis
patent: 3675700 (1972-07-01), Verdier
patent: 3707177 (1972-12-01), Boileau

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