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Title:
PNEUMATIC RADIAL TIRE FOR HEAVY LOAD
Document Type and Number:
Japanese Patent JP2010064689
Kind Code:
A
Abstract:

To provide a pneumatic radial tire for heavy load reducing separation failure in a belt layer by suppressing reduction of tensile rigidity of a steel cord as much as possible by suppressing fretting abrasion generated between a steel cord body and a wrapping filament in the steel cord constituting the belt layer.

The steel cord 4S constituting the belt layer 4 is constituted by the steel cord body comprising a plurality of steel filaments 4a, 4b, 4c and the wrapping filament 4z helically wound on the periphery. The lapping filament 4z is constituted by a brass element wire.


Inventors:
UEDA YOSHIO
Application Number:
JP2008234943A
Publication Date:
March 25, 2010
Filing Date:
September 12, 2008
Export Citation:
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Assignee:
YOKOHAMA RUBBER CO LTD
International Classes:
B60C9/18; B60C9/00; B60C9/20; D07B1/06
Domestic Patent References:
JPS4813634A
JPH0565370A1993-03-19
JPS61119403A1986-06-06
JPH11247077A1999-09-14
Attorney, Agent or Firm:
Kazuhiko Saishita
Shinichi Ogawa
Takashi Noguchi