Title:
STEEL CORD AND RADIAL TIRE USING THE SAME AS A REINFORCING MATERIAL
Document Type and Number:
WIPO Patent Application WO/1995/018259
Kind Code:
A1
Abstract:
A compact, high elongation steel cord which provides a great elongation at break, small wear at twisting and good rubber permeation and is easy and efficient to produce by twisting once; and a radial tire using this high elongation steel cord as a reinforcing material which has high anti-cutting properties and good riding comfort and which is not likely to generate a separation phenomenon. The steel cord has a l x n construction in which three or more strands are twisted together in the same direction and at the same pitch and an elongation at break of 5 % or more. The steel cord has a spiral compound construction in which three or more strands which are waved in a spiral fashion at a pitch shorter than the pitch for twisting the cord are twisted such that a P/D ratio of twisting pitch P to outside diameter D of the cord falls within a range of 8 to 15 and elongation at 35 kgf/mm2 and 70 kgf/mm2 fall within 0.71 to 1.00 % and 1.18 to 1.57 %, respectively.
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Inventors:
MATSUMARU KAZUO (JP)
HORIKAWA KOICHI (JP)
HORIKAWA KOICHI (JP)
Application Number:
PCT/JP1994/002260
Publication Date:
July 06, 1995
Filing Date:
December 27, 1994
Export Citation:
Assignee:
TOKYO ROPE MFG CO (JP)
MATSUMARU KAZUO (JP)
HORIKAWA KOICHI (JP)
MATSUMARU KAZUO (JP)
HORIKAWA KOICHI (JP)
International Classes:
D07B1/06; D07B7/02; (IPC1-7): D07B1/06
Foreign References:
| JPH0268376A | 1990-03-07 | |||
| JPH0424296A | 1992-01-28 |
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