公开(公告)号：DE3885719T2

公开(公告)日：1994-04-14

申请号：DE3885719

申请日：1988-12-09

Applicant: BRIDGESTONE CORP

Inventor： KADOTA KUNINOBU ,  IMAI ISAMU ,  INADA NORIO

IPC: B60C9/00 ,  B60C9/20

公开(公告)号：DE3611222C1

公开(公告)日：1986-10-30

申请号：DE3611222

申请日：1986-04-04

Applicant: BRIDGESTONE CORP

Inventor： IMAI ISAMU

IPC: B60C9/00 ,  B60C9/08 ,  B60C9/20 ,  B60C1/00 ,  B60C9/06 ,  B60C15/00

Abstract: A pneumatic tire comprises an annular tread at a central portion, a pair of side wall portions, bead portions, a carcass extending between both bead wires, and a breaker composed of two or more cord layers with cords arranged at a cord angle of 5-60 DEG relative to the circumferential direction and between the tread and the carcass and intersecting in the adjacent plies. The cords constituting the carcass or the breaker are substantially made of polytetramethylene adipamide (4,6-nylon), and as buried in a rubber of the tire, have the following characteristics: 5.0(%)

公开(公告)号：DE3885719D1

公开(公告)日：1993-12-23

申请号：DE3885719

申请日：1988-12-09

Applicant: BRIDGESTONE CORP

Inventor： KADOTA KUNINOBU ,  IMAI ISAMU ,  INADA NORIO

IPC: B60C9/00 ,  B60C9/20

公开(公告)号：FR2590207A1

公开(公告)日：1987-05-22

申请号：FR8616025

申请日：1986-11-18

Applicant: BRIDGESTONE CORP

Inventor： IMAI ISAMU ,  INADA NORIO

IPC: B60C9/00 ,  B60C9/08 ,  B60C19/00 ,  D02G3/48 ,  D02G3/02 ,  B60C9/04 ,  B29D30/06

Abstract: A heavy duty pneumatic radial tire for use under a high speed and a high internal pressure, is disclosed, which comprises a plurality of carcass cord layers of which cords are arranged at an angle from 90 DEG to 75 DEG with respect to a circumferential direction of the tire. The cords are composed of fibers of an aromatic polyamide having not less than 80 mole % of a repeating unit expressed by the following formula: -NH-Ar1-NHCO-Ar2-CO- in which Ar1 and Ar2 denote at least one kind of an aromatic residue selected from: +TR Elongation En (%) of the aromatic polyamide fibers constituting the respective plies meets the following inequation: En-1+0.2

公开(公告)号：DE68904441T2

公开(公告)日：1993-05-13

申请号：DE68904441

申请日：1989-03-02

Applicant: BRIDGESTONE CORP

Inventor： IMAI ISAMU ,  NISHIKAWA TOMOHISA ,  INADA NORIO

IPC: B60C9/00 ,  B60C9/20 ,  B60C9/22 ,  D02G3/48 ,  B60C9/08

Abstract: In a pneumatic radial tire, cords used in at least one carcass ply (4) and/or at least one additional cord reinforcing layer (5) disposed on a belt layer (2) are made from composite fiber having a core of polyester and a sheath of polyamide. The polyester has an intrinsic viscosity of at least 0.8 and the weight ratio of the core to the core + sheath is 0.3-0.9.

公开(公告)号：FR2590207B1

公开(公告)日：1989-05-05

申请号：FR8616025

申请日：1986-11-18

Applicant: BRIDGESTONE CORP

Inventor： IMAI ISAMU ,  INADA NORIO

IPC: B60C9/00 ,  B60C9/08 ,  B60C19/00 ,  D02G3/48 ,  D02G3/02 ,  B60C9/04 ,  B29D30/06

Abstract: A heavy duty pneumatic radial tire for use under a high speed and a high internal pressure, is disclosed, which comprises a plurality of carcass cord layers of which cords are arranged at an angle from 90 DEG to 75 DEG with respect to a circumferential direction of the tire. The cords are composed of fibers of an aromatic polyamide having not less than 80 mole % of a repeating unit expressed by the following formula: -NH-Ar1-NHCO-Ar2-CO- in which Ar1 and Ar2 denote at least one kind of an aromatic residue selected from: +TR Elongation En (%) of the aromatic polyamide fibers constituting the respective plies meets the following inequation: En-1+0.2

公开(公告)号：ES2048208T3

公开(公告)日：1994-03-16

申请号：ES88311693

申请日：1988-12-09

Applicant: BRIDGESTONE CORP

Inventor： KADOTA KUNINOBU ,  IMAI ISAMU ,  INADA NORIO

IPC: B60C9/00 ,  B60C9/20

公开(公告)号：DE68904441D1

公开(公告)日：1993-03-04

申请号：DE68904441

申请日：1989-03-02

Applicant: BRIDGESTONE CORP

Inventor： IMAI ISAMU ,  NISHIKAWA TOMOHISA ,  INADA NORIO

IPC: B60C9/00 ,  B60C9/20 ,  B60C9/22 ,  D02G3/48 ,  B60C9/08

Abstract: In a pneumatic radial tire, cords used in at least one carcass ply (4) and/or at least one additional cord reinforcing layer (5) disposed on a belt layer (2) are made from composite fiber having a core of polyester and a sheath of polyamide. The polyester has an intrinsic viscosity of at least 0.8 and the weight ratio of the core to the core + sheath is 0.3-0.9.

公开(公告)号：JPS6339442B2

公开(公告)日：1988-08-05

申请号：JP18481682

申请日：1982-10-21

Applicant: BRIDGESTONE CORP

Inventor： IMAI ISAMU ,  OOSHIMA KAZUO ,  INADA NORIO

IPC: B29C35/16 ,  B29K21/00 ,  B29L30/00 ,  B60C9/00 ,  B60C9/08 ,  D01F6/62 ,  D02G3/48

公开(公告)号：JPS632701A

公开(公告)日：1988-01-07

申请号：JP14495886

申请日：1986-06-23

Applicant: BRIDGESTONE CORP

Inventor： IMAI ISAMU

IPC: B60C9/08 ,  B60C9/00 ,  B60C9/18 ,  B60C15/00 ,  D02G3/02 ,  D02G3/48

Abstract: PURPOSE:To improve the separation durability of a carcass ply end section, make a tire lightweight, and reduce its heat emission by arranging a carcass folded end between the innermost layer of belt layers formed into a layer structure with fibers made of specific aromatic polyamide and a carcass layer in a radial tire for aircraft or the like. CONSTITUTION:Belt layers 1 are constituted of multiple layers of plies 3 arranged at an angle of 0 deg.-5 deg. against a tire equator and formed with fiber cords made of aromatic polyamide shown by Equation I. On the other hand, a carcass layer 2 is constituted of radial cord plies arranged in parallel so as to cross the tire equator at an angle of 90 deg.-70 deg., and the wound-up end section 4 of the carcass 2 is put between the innermost layer of the belt layers 1 and the carcass layer 2. According to this constitution, the separation durability of the carcass ply end section is improved, the tire is made lightweight, and its beat emission can be reduced.