Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1990-09-10
1992-01-21
Knable, Geoffrey L.
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152538, B60C 928
Patent
active
050820427
ABSTRACT:
A high durable pneumatic radial tire includes reinforcing belts of at least four cord layers whose cords are arranged in parallel with each other and coated with rubber. These cord layers are laminated about a crowd region of a radial carcass with the cords intersecting with each other over a crown circumference to reinforce a tread of the tire. The cord layers are divided into two groups of positive and negative signs by signs of inclined angles of projections of the cords of the respective cord layers onto an imaginary coordinate plane including a rotating axis of the tire. The cord layers in each of the groups are wider as they are arranged on further radially outer sides. The maximum width of the cord layers of the one group is much narrower than a maximum width of the cord layers of the other group. In this manner, shearing strains caused by load acting upon the tire in rubbers between the cord layers near to side ends of the cord layers in contact with a tread rubber on the reinforcing belts.
REFERENCES:
patent: 3690364 (1972-09-01), Barassi et al.
patent: 3874436 (1975-04-01), Hashida
patent: 4865103 (1989-09-01), Kobayashi et al.
Kawame Yumi
Kobayashi Yasuhiko
Koseki Hiroyuki
Bridgestone Corporation
Knable Geoffrey L.
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