Title:
TIRE
Document Type and Number:
WIPO Patent Application WO/2019/117010
Kind Code:
A1
Abstract:
Provided is a tire comprising a helical cord layer at a tire crown section, wherein fatigue fracture of a reinforcement cord of the helical cord layer can be curbed. This tire is provided with: a carcass that extends in a toroidal shape between a pair of bead sections; and a helical cord layer that is arranged in a crown section of the carcass, at the outer side in the tire radial direction, and that is obtained by winding a reinforcement cord 1a in a helical shape and forming an upper layer and a lower layer. The reinforcement cord of the helical cord layer is composed of a non-metallic fiber. A twisting direction of filaments 1f constituting the reinforcement cord of the helical cord layer and a winding direction of the reinforcement cord in the helical cord layer are the same.
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Inventors:
OTA SAKI (JP)
Application Number:
PCT/JP2018/044930
Publication Date:
June 20, 2019
Filing Date:
December 06, 2018
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C9/20; B60C9/18
Foreign References:
| JP2005205778A | 2005-08-04 | |||
| JP2013510036A | 2013-03-21 | |||
| JPS5573405U | 1980-05-20 | |||
| JP2004074826A | 2004-03-11 | |||
| JPH09240213A | 1997-09-16 | |||
| JP2006137287A | 2006-06-01 | |||
| JP2004009760A | 2004-01-15 | |||
| JPS53142704A | 1978-12-12 | |||
| US6851463B1 | 2005-02-08 |
Attorney, Agent or Firm:
HONDA Ichiro (JP)
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