Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1996-03-29
1997-12-16
Johnstone, Adrienne C.
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152534, 152536, 152541, 152546, 152547, B60C 918, B60C 920, B60C 1506
Patent
active
056980515
ABSTRACT:
A pneumatic radial tire comprises a pair of bead cores, a carcass extending toroidally between the bead cores, a stiffener disposed one on each of bead cores and a belt comprising rubberized cord plies and disposed on a crown portion of the carcass, wherein the rubberized cord plies comprise a first rubberized ply having steel cords inclined with respect to the tire equatorial plane and at least one second rubberized ply having organic fiber cords extending substantially in parallel with the tire equatorial plane, the relation between the height H of the stiffener in the radial direction and the section height SH of the tire is given by 0.4 SH.ltoreq.H.ltoreq.0.6 SH, and the average thickness d of the upper portion of the stiffener defined between a height corresponding to 0.35 SH and the top of the stiffener is given by 0.5 mm.ltoreq.d.ltoreq.0.2 D where D is the thickness of the stiffener at the bottom portion adjacent to the bead core.
REFERENCES:
patent: 3973612 (1976-08-01), Mezzanotte
patent: 5526863 (1996-06-01), Hodges
Patent Abstracts of Japan, vol. 012, No. 201 (M-707), Jun. 10, 1988 & JP-A-63 008006 (Yokohama Rubber Co. Ltd.:The), Jan. 13 1988.
Patent Abstracts of Japan, vol. 95, No. 001 & JP-A-07 017212 (Sumitomo Rubber Ind Ltd), Jan 20, 1995.
Patent Abstracts of Japan, vol. 95, No. 004 & JP-A-07 108806 (Sumitomo Rubber Ind Ltd), Apr. 25, 1995.
English version of Abstract for JP-A-4-163212.
Bridgestone Corporation
Johnstone Adrienne C.
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