Title:
PNEUMATIC RADIAL TIRE
Document Type and Number:
WIPO Patent Application WO/1990/010548
Kind Code:
A1
Abstract:
The invention relates to a pneumatic radial tire wherein a belt consists of at least two layers of belt ply layers formed by arranging parallel metallic single wire cords having a filament diameter of 0.28 to 0.70 mm at a cord angle of 15 to 30° to the equatorial plane of the tire with an end count of 30 to 120 per 50 mm, and a rubber reinforcing layer which has a 25 % modulus of 20 to 80 kg/cm2 and which is at least 1 mm thick is disposed substantially adjacent to this belt ply layer. This tire has improved performances such as kinematic characteristics and rolling resistance and fatigue resistance of the cords. Since the single wire cord can be applied to the belt layer, the production cost is lower than that of the conventional tires.
Inventors:
BUNDO MOTONORI (JP)
NAKAGAWA SUMITO (JP)
NAKAGAWA SUMITO (JP)
Application Number:
PCT/JP1989/000251
Publication Date:
September 20, 1990
Filing Date:
March 08, 1989
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C9/00; B60C9/18; B60C9/20; (IPC1-7): B60C9/20
Foreign References:
| JPS57198101A | 1982-12-04 | |||
| JPS6319404U | 1988-02-08 | |||
| JPS6112989A | 1986-01-21 | |||
| JPS62289404A | 1987-12-16 | |||
| JPS61119405A | 1986-06-06 | |||
| JPS61119407A | 1986-06-06 |
Other References:
See also references of EP 0414892A4
Download PDF: