Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1991-11-26
1995-01-10
Ball, Michael W.
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152543, 152546, 152552, 152554, B60C 1506
Patent
active
053798198
ABSTRACT:
The invention is directed to a pneumatic tire which comprises a carcass turned up around bead cores from axially inward to outward thereof to form two turned up portions and one main portion therebetween, the carcass turned up portions extending radially outwardly along and adjacently to the carcass main portion from the bead portion to a position not lower than a 1/2 height of the tire section height, an axially inner reinforcing layer disposed axially inside the carcass main portion, and an axially outer reinforcing layer disposed between the carcass main portion and each turned up portion, the inner reinforcing layer comprising one ply of high modulus cords laid at 15 to 50 degrees with respect to the tire axis and extending along the inner face of the carcass at least from a 1/4 height of the tire section height to the bead portion, the outer reinforcing layer comprising two cross plies of high modulus cords laid at 30 to 60 degrees with respect to the tire circumferential direction, and the cord spacing between the adjacent plies in the outer reinforcing layer being 1 to 2 times the cord thickness.
REFERENCES:
patent: 3298417 (1967-01-01), Keefe, Jr.
patent: 3961657 (1976-06-01), Chrobak
patent: 4139040 (1979-02-01), Samoto et al.
patent: 4398584 (1983-08-01), Tansei et al.
patent: 4811773 (1989-03-01), Endo et al.
patent: 5048584 (1991-09-01), Nakano et al.
Ball Michael W.
Krawczyk Nancy T.
Sumitomo Rubber Industries Ltd.
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