Pneumatic tire for passenger car

Details Pneumatic tire for passenger car Pneumatic tire for passenger car

1990-10-10

1992-04-28

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

152544, 152546, 152547, B60C 1502, B60C 1506

Patent

active

051079151

ABSTRACT:
A pneumatic tire for a passenger car characterized in that a rubber chafer around bead portions is composed of a laminate member consisting of a soft rubber layer which is at least 0.2 mm thick and a hard rubber layer which is thicker than the soft rubber layer, the soft rubber layer being made of a rubber having a JIS hardness Hs of 50 to 65, a complex elastic modulus E* of at least 3.0 MPa and a compression set of up to 25% and disposed outside, and the hard rubber layer being made of a rubber having a JIS hardness Hs of 70 to 85, a complex elastic modulus E* of at least 6.0 MPa and a compression set of up to 32% and disposed inside.

REFERENCES:
patent: 2888058 (1959-05-01), Manis et al.
patent: 3921693 (1975-11-01), Suzuki et al.
patent: 4917164 (1990-04-01), Ushikubo et al.
patent: 5058649 (1991-10-01), Hoang et al.
"Rubber Technology and Manufacture"; p. 134; Editor C. M. Blow; 1975.

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