Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1989-03-01
1990-10-30
Ball, Michael W.
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152535, 152538, B60C 926
Patent
active
049662147
ABSTRACT:
A high inner pressure heavy duty pneumatic radial tire includes a carcass of a plurality of plies made of laminated organic fiber cord layers of which one ply is turned up about bead cores, and a belt made of a plurality of laminated cord reinforcing layers. The belt includes at least one set of packing structural reinforcing layers. Each of the packing structrure reinforcing layers includes cord reinforcing layers wider than a width of the arranged belt and having width edges folded inwardly to form folded layers and further cord reinforcing layers having widths as cut corresponding to inner widths of the folded layers and surrounded by the folded layers to form inner core reinforcing layers. The further core reinforcing layers are higher in circumferential rigidity than the first mentioned core reinforcing layers. Cords of the first mentioned cord reinforcing layers and the further core reinforcing layers are made of material substantially the same at least in modulus of elasticity.
REFERENCES:
patent: 3018814 (1962-01-01), Saint-Paul
patent: 3881538 (1975-05-01), Mirtain
patent: 4184529 (1980-01-01), Boileai
patent: 4258774 (1981-03-01), Mirtain et al.
patent: 4402356 (1986-09-01), Musy
Ball Michael W.
Bridgestone Corporation
Knable Geoffrey L.
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