Truck tire and tread for steer axles

Details Truck tire and tread for steer axles Truck tire and tread for steer axles

1995-07-14

1997-08-26

Maki, Steven D.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152209A, 152454, 152456, B60C 300, B60C 306

Patent

active

056606524

ABSTRACT:
A new pneumatic radial ply truck tire 10 for use on steering axles is disclosed. The tire 10 has a 20 tread having a plurality of circumferentially continuous grooves 22, a pair of narrow circumferential decoupling grooves 24, a pair of radially recessed ribs 21, and a plurality of tread ribs 25,25A. The tread 20 has a radially outer tread surface 30 having a curvature defined by an internal radius of curvature Ri and an external radius of curvature Re, Re extending laterally over a majority of a shoulder rib 25A to the narrow decoupling groove 24 on at least one-half of the tread 20, preferably both tread halves. The shoulder rib 25A has a thickness (t) at the circumferential groove 22 which progressively increases to a thickness (t max) adjacent the narrow decoupling groove 24. The tread 20 exhibits a pressure distribution in the shoulder region which is complimentary to uniform wear.

REFERENCES:
patent: 3012599 (1961-12-01), Benson et al.
patent: 3550665 (1970-12-01), Verdier
patent: 3799231 (1974-03-01), Boileau
patent: 3841374 (1974-10-01), Boileau
patent: 3954130 (1976-05-01), Verdier
patent: 4449560 (1984-05-01), Tansei et al.
patent: 4480671 (1984-11-01), Giron
patent: 4784200 (1988-11-01), Fujiwara
patent: 4785861 (1988-11-01), Fujiwara
patent: 4798236 (1989-01-01), Fujiwara
patent: 4995437 (1991-02-01), Enoki et al.
patent: 5522442 (1996-06-01), Kishi
1970 Tread Design Guide, p. 9.
Smithers Laboratories, Akron, Ohio, May 1969 Tire Service.

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