Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JPH11286207
Kind Code:
A
Abstract:
To provide a pneumatic tire having improved durability in its bead part by suppressing fatigue failure of a bead core in a cable structure.
A bead core 1, which comprises three or more layers of side wire layers 7A-7D wherein plural metal side wires 6 having a smaller diameter than a core wire 5 are nearly spirally wound around the core wire 5, is embedded in a bead part of a pneumatic tire. Each the side wire 6 in at least one side wire layer 7A of the bead core 1 has a depth of decarburization from its surface of 5 μm or less and a diameter of 1.0-3.0 mm.
Inventors:
SATO YOSHITAKA
Application Number:
JP8972598A
Publication Date:
October 19, 1999
Filing Date:
April 02, 1998
Export Citation:
Assignee:
BRIDGESTONE CORP
International Classes:
B60C15/04; C21D9/52; (IPC1-7): B60C15/04; C21D9/52
Attorney, Agent or Firm:
Akihide Sugimura (8 outside)