Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2008/047938
Kind Code:
A1
Abstract:
A pneumatic tire having appropriately constructed reinforcement layers. The
construction prevents separation between a carcass and rubber and also prevents
pull-out of the carcass from a bead section to increase durability of the bead
section. The pneumatic tire has a pair of bead sections (1) in which bead cores
(2) are embedded, a pair of side walls extending outward from the bead sections
(1) in the radial direction of the tire, and a carcass (5) constructed from body
sections (3) and folded back sections (4), the body sections (3) toroidally extending
in each portion of the tread that extends straddling both side walls, the folded
back sections (4) extending from the body sections (3) and folded back around
the bead cores (2) from the inner sides in the lateral direction of the tire toward
the outer sides. Also, at least two reinforcement layers (8) are arranged along
the inner surfaces of the carcass (5), on the inner side, in the lateral direction
of the tire, of the bead cores (2). The reinforcement layers (8) are formed by covering
cords (7) with rubber, and the cords (7) extend in the substantially circumferential
direction of the tire.
Inventors:
MIYAZONO TOSHIYA (JP)
Application Number:
PCT/JP2007/070578
Publication Date:
April 24, 2008
Filing Date:
October 22, 2007
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
MIYAZONO TOSHIYA (JP)
MIYAZONO TOSHIYA (JP)
International Classes:
B60C15/06; B60C15/00
Foreign References:
| JP2001191758A | 2001-07-17 | |||
| JP2006175955A | 2006-07-06 | |||
| JP2006188147A | 2006-07-20 | |||
| JP2002500122A | 2002-01-08 | |||
| JP2002500123A | 2002-01-08 | |||
| JPS621606A | 1987-01-07 | |||
| JP2001191758A | 2001-07-17 | |||
| JPH09156310A | 1997-06-17 |
Other References:
See also references of EP 2077194A4
Attorney, Agent or Firm:
SUGIMURA, Kenji et al. (3-2-1 Kasumigaseki, Chiyoda-ku, Tokyo 13, JP)
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