Pneumatic tire with a reinforcing layer formed by spirally hoopi

Details Pneumatic tire with a reinforcing layer formed by spirally hoopi Pneumatic tire with a reinforcing layer formed by spirally hoopi

1989-06-05

1991-12-31

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

152528, 152531, 156130, B60C 920, B60C 926

Patent

active

050763369

ABSTRACT:
A pneumatic tire comprising a carcass made up of layers of cord materials and extending from one bead to the other bead, a tread portion disposed radially outwardly of the carcass and extending in a circumferential direction of the tire, a belt layer of at least one belt disposed between the carcass and the tread portion, and a reinforcing layer disposed between the tread portion and the belt layer, wherein the reinforcing layer is formed by spirally hooping two continuous ribbon materials, each of which is composed of two to twelve cord materials covered with rubber and has a ribbon width of 4-11 mm, on the belt layer in the circumferential direction so that the lateral edges of the belt layer are covered and that the ends of each ribbon material do not overlap each other, and wherein one of the ribbon materials is hooped in two or more layers at one laterally outer end portion of the belt layer and the other ribbon material is hooped in two or more layers at an opposite laterally outer end portion of the belt layer.

REFERENCES:
patent: 3850219 (1974-11-01), Snyder
patent: 4146415 (1979-03-01), Caretta et al.
patent: 4183389 (1980-01-01), Grosch

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