TIRE

• US 20190329595A1
• Filed: 11/20/2017
• Published: 10/31/2019
• Est. Priority Date: 11/25/2016
• Status: Abandoned Application

• Current Assignee: Bridgestone Corporation
• Original Assignee: Bridgestone Corporation
• Inventors: OTA, Saki
• Application Number:
  US16/464,100
• Publication Number:
  US 20190329595A1
• Time in Patent Office: Days
• CPC Class Codes: B60C 2009/2016 comprising cords at an angle of 10 to 30 degrees to the circumferential direction
• CPC Class Codes: B60C 2009/2019 comprising cords at an angle of 30 to 60 degrees to the circumferential direction
• CPC Class Codes: B60C 2009/2022 comprising cords at an angle of 60 to 90 degrees to the circumferential direction
• CPC Class Codes: B60C 2009/2067 Thickness
• CPC Class Codes: B60C 2009/2096 Twist structures
• CPC Class Codes: B60C 2009/266 combined with non folded cut-belt plies
• CPC Class Codes: B60C 9/18 Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
• CPC Class Codes: B60C 9/185 between adjacent or radially below the belt plies
• CPC Class Codes: B60C 9/20 built-up from rubberised plies each having all cords arranged substantially parallel
• CPC Class Codes: B60C 9/263 further characterised by an endless zigzag configuration in at least one belt ply, i.e. no cut edge being present

Abstract

A method to provide technology for suppressing, in a tire including a spiral cord layer and an auxiliary belt layer, the occurrence of separation between the spiral cord layer and the auxiliary belt layer. The tire includes: a carcass toroidally extending between a pair of bead portions; a spiral cord layer arranged on an outer side in a tire radial direction of a crown portion of the carcass and in which an upper layer and a lower layer are formed by spirally winding a reinforcing cord; and an auxiliary belt layer arranged on the outer side in the tire radial direction of the spiral cord layer. At least at ends in a tire width direction of a region where the spiral cord layer and the auxiliary belt layer are laminated, a rubber gauge between the spiral cord layer and the auxiliary belt layer is 0.5 mm to 14.0 mm.

Claims

1. A tire comprising:

a carcass toroidally extending between a pair of bead portions;

a spiral cord layer arranged on an outer side in a tire radial direction of a crown portion of the carcass and in which an upper layer and a lower layer are formed by spirally winding a reinforcing cord; and

an auxiliary belt layer arranged on the outer side in the tire radial direction of the spiral cord layer,

wherein, at least at ends in a tire width direction of a region where the spiral cord layer and the auxiliary belt layer are laminated, a rubber gauge between the spiral cord layer and the auxiliary belt layer is 0.5 mm to 14.0 mm.

2. The tire according to claim 1, comprising a core-material cord layer between the upper layer and the lower layer of the spiral cord layer.

3. The tire according to claim 1, wherein the angle of the reinforcing cord of the spiral cord layer is in a range of 12°

to 90°

with respect to the tire circumferential direction.

4. The tire according to claim 2, wherein the angle of the reinforcing cord of the spiral cord layer is in a range of 12°

to 90°

with respect to the tire circumferential direction.