Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Patent
1993-10-13
1995-03-28
Johnstone, Adrienne
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
152526, 152531, 152533, 152554, 156117, B60C 918, B60C 920, B60C 922, B60C 1500
Patent
active
054008476
ABSTRACT:
A radial tire for motorcycles which comprises: a carcass ply of organic fiber cords arranged radially at an angle of 70 to 90 degrees to the tire equator and turned up around bead cores to form two turned up portions and a main portion therebetween; and a belt disposed radially outside the carcass and inside a tread, wherein the radial height Ht of the radially outer edge of each carcass turned up portion is 0.5 to 1.2 times the radial height of the tread edge, both from the bead base. The belt is composed of three pieces, two lateral pieces and a central piece therebetween, each piece being made of at least one spirally wound cord having an elastic modulus of not less than 600 kgf/sq.mm and formed by winding spirally a ribbon of rubber in which the at least one cord is embedded. The width of the central piece of the belt is 0.1 to 0.6 times the tread width. The central piece is differed from at least one of the lateral pieces in respect of cord specification and/or cord arrangement.
REFERENCES:
patent: 4706724 (1987-11-01), Ohkuni et al.
patent: 4773462 (1988-09-01), Ohkuni et al.
patent: 5209794 (1993-05-01), Nakasaki
Translation of Japanese Patent Application 62-80101, Apr. 13, 1987, Kawabata et al., 152/531.
Mechanics of Pneumatic Tires, ed. Samuel Clark: US Department of Transportation, Aug. 1981, p. 129.
Naito Sadaaki
Suzuki Shigehiko
Yasui Itsuo
Johnstone Adrienne
Sumitomo Rubber Industries Ltd.
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