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Title:
TIRE
Document Type and Number:
WIPO Patent Application WO/2018/235520
Kind Code:
A1
Abstract:
The present invention provides a tire which is provided with, in the tire crown portion, a helical cord layer comprising a reinforcing cord, wherein the tire suppresses the occurrence of separation between the helical cord layer and an auxiliary belt layer when the auxiliary belt layer is disposed to the outer side of the helical cord layer in the radial direction of the tire. Specifically provided is a tire provided with: a carcass (14) which extends in a toroidal shape across a pair of beads (13); and a helical cord layer (1) which is disposed in the crown portion to the outer side of the carcass in the radial direction of the tire, and is obtained by winding a reinforcing cord in a helical shape to form a top layer (1A) and a bottom layer (1B). An auxiliary belt layer (17) is disposed to the outer side of the helical cord layer in the radial direction of the tire, and the angle of the belt cord in the auxiliary belt layer relative to the circumferential direction of the tire is in the range of 30° to 90°.

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Inventors:
OTA SAKI (JP)
Application Number:
PCT/JP2018/020071
Publication Date:
December 27, 2018
Filing Date:
May 24, 2018
Export Citation:
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Assignee:
BRIDGESTONE CORP (JP)
International Classes:
B60C9/18; B60C9/20
Domestic Patent References:
WO2014057551A12014-04-17
Foreign References:
JP2005319955A2005-11-17
JPH09220908A1997-08-26
JP2006069283A2006-03-16
JP2003231403A2003-08-19
JP2004001609A2004-01-08
Other References:
See also references of EP 3643515A4
Attorney, Agent or Firm:
HONDA Ichiro (JP)
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