Pneumatic tire for airplanes

Details Pneumatic tire for airplanes Pneumatic tire for airplanes

1975-10-02

1977-08-30

Hoffman, Drayton E.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

152352A, B60C 1106

Patent

active

040448100

ABSTRACT:
A pneumatic tire for airplanes which can reduce a ratio of the load subjected to a tread center zone of the tire to the load subjected to two shoulder zones thereof and improve a high speed durability of the tire without sacrificing a wear resistance thereof is disclosed. The tire comprises a pair of circumferentially extending grooves each arranged at a shoulder portion of the tire and substantially symmetrically and equally spaced apart from a crown center of the tire. A distance between the circumferentially extending grooves is from 50% to 95%, preferably 55% to 80% of a tread width and serves to divide a tread portion of the tire into a center zone and two shoulder zones. The outer surfaces of the shoulder zones are protruded from the circumferentially extending grooves toward the outside thereof by a step having a level difference from 0.5 mm to 6 mm.

REFERENCES:
patent: 1348200 (1920-08-01), Beaumont
patent: 3247880 (1966-04-01), Batori
patent: 3517720 (1970-06-01), Brown

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