Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2014/181579
Kind Code:
A1
Abstract:
Provided is a pneumatic tire which is configured so as to prevent carcass cords from biting into an inner liner, thereby improving the durability performance of the tire.
A pneumatic tire (1) is provided with a carcass (6) which comprises a carcass ply (11) extending from a tread (2) through side walls (3) to the bead cores (5) of bead sections (4), the bead cores (5) each including an inner core (14) and an outer core (15). The carcass ply (11) is sandwiched between the inner cores (14) and the outer cores (15). Each of an inner core (14) and an outer core (15) includes a bead cord (16) which is wound at least one turn in the circumferential direction of the tire. Each of the bead cords (16) includes an outermost layer (18) formed by twisting filaments (17) together. In at least one bead section, the outermost layer (18) of the bead cord (16) of each of the inner core (14) and the outer core (15) is twisted in the direction which allows the carcass ply (11) to easily move to the outside in the radial direction of the tire from between the inner core (14) and the outer core (15).
More Like This:
| JP6760003 | Pneumatic tires |
| WO/2004/035327 | EXTENDED MOBILITY TYRE COMPRISING BEAD WITH SYMMETRICAL FORCE DISTRIBUTION |
| JP4642291 | Radial tires for heavy loads |
Inventors:
KOHARA KEI (JP)
Application Number:
PCT/JP2014/056342
Publication Date:
November 13, 2014
Filing Date:
March 11, 2014
Export Citation:
Assignee:
SUMITOMO RUBBER IND (JP)
International Classes:
B60C15/00; B60C9/02; B60C15/05
Foreign References:
| JP2012158064A | 2012-08-23 | |||
| JP2012106441A | 2012-06-07 | |||
| JP2008013135A | 2008-01-24 | |||
| JP2008273435A | 2008-11-13 | |||
| JP2012158064A | 2012-08-23 |
Other References:
See also references of EP 2987657A4
Attorney, Agent or Firm:
SUMITOMO Shintaro (JP)
Shintaro Sumitomo (JP)
Shintaro Sumitomo (JP)
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