Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP3497030
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a tire belt part with an excellent uniformity and high-speed durability by allowing a vulcanized tire to exhibit a high tensile elastic modulus while allowing it to easily follow a lift during tire vulcanization, without causing an increase in tire weight.
SOLUTION: A plurality of primary twist yarn A (8a, 8a'), each comprising high-elastic-modulus organic fiber filaments fh with a tensile elastic modulus of 300g/d or higher and heat contraction organic fiber filaments fs, both of which are paralleled and twisted, are paralleled. Either a complex cord 8 formed by final twist in the opposite direction to twisting of the primary twist yarn A or at least one of the primary twist yarn A (8a, 8a'), and at least one primary twist B (8b) formed by paralleling high-elastic-modulus organic-fiber filaments with a tensile elastic modulus of 300g/d or higher and twisting them in the same direction as the primary twist yarn A are paralleled. The complex cord 8 formed by final twist in the opposite direction to twisting of the primary twist yarn A, B is made to continuously circle the side of the tread outside a carcass layer while being approximately parallel to the tire circumferential direction, thus forming a reinforcement layer.
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Inventors:
Shuji Takahashi
Application Number:
JP31442395A
Publication Date:
February 16, 2004
Filing Date:
December 01, 1995
Export Citation:
Assignee:
Yokohama Rubber Co., Ltd.
International Classes:
D07B1/02; B60C9/00; B60C9/18; B60C9/20; B60C9/22; D02G3/48; (IPC1-7): B60C9/20; B60C9/00; B60C9/22; D02G3/48; D07B1/02
Domestic Patent References:
| JP6234304A | ||||
| JP1247204A | ||||
| JP2141309A | ||||
| JP52155248A | ||||
| JP5139112A | ||||
| JP447618B2 |
Attorney, Agent or Firm:
Shinichi Ogawa (2 outside)