PNEUMATIC RADIAL TIRE - YOKOHAMA RUBBER CO LTD

Title:

PNEUMATIC RADIAL TIRE

Document Type and Number:

WIPO Patent Application WO/1996/022892

Kind Code:

A1

Abstract:

A pneumatic tire in which a belt layer comprising steel cords each having a flat cross section is disposed on the circumference of a tread portion of a carcass layer in such a manner that the major axis direction of a steel cord is in the surface direction of the belt layer, in which the steel cord is constructed as a flat open 1x6 twist structure comprising filaments each having a strand diameter ranging from 0.20 to 0.40 mm, in which the major axis DL of the steel cord taken out of the tire and the twist pitch P have the following relationships relative to the strand diameter d, respectively: 3.67d-0.04 DL 3.67d+0.16, 30d P 45d, and in which the stretch of the steel cord (10) generated when the load is increased from 0.25 kg to 5.0 kg is less than 0.25 %.

Inventors:

MASAKI TAKEO (JP)
IGARASHI EIJI (JP)
KANEHIRA YOSHIKI (JP)
KAWAI TOSHIO (JP)
KOMATSU RYUZOU (JP)

Application Number:

PCT/JP1996/000118

Publication Date:

August 01, 1996

Filing Date:

January 23, 1996

Export Citation:

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Assignee:

YOKOHAMA RUBBER CO LTD (JP)
MASAKI TAKEO (JP)
IGARASHI EIJI (JP)
KANEHIRA YOSHIKI (JP)
KAWAI TOSHIO (JP)
KOMATSU RYUZOU (JP)

International Classes:

B60C9/00; B60C9/18; B60C9/20; B60C9/22; D07B1/06; (IPC1-7): B60C9/00; B60C9/20; D07B1/06

Foreign References:

JPH043474B2	1992-01-23
JPH0477Y2	1992-01-06
JPH0126882B2	1989-05-25
JPS63270886A	1988-11-08
JPH0396402A	1991-04-22
JPS62105805U	1987-07-06

Other References: