公开(公告)号：DE69212435D1

公开(公告)日：1996-08-29

申请号：DE69212435

申请日：1992-11-16

Applicant: BRIDGESTONE CORP

Inventor： HASHIMOTO TAKATSUGU ,  AKUTAGAWA KEIZO ,  YAGAWA KAZUO ,  TANAKA MAKOTO ,  YAMAGISHI JUNICHI ,  HACHIYA KAZUO

IPC: B60C1/00 ,  B60C11/00

Abstract: The invention provides a flame-retardant rubber tire comprising an outer rubber body portion consisting essentially of a tread rubber layer 2, a sidewall rubber layer 3 extending inwardly from each side edge of the tread rubber layer 2 toward the vicinity of a bead portion 8 in a radial direction and a rubber chafer layer arranged in the vicinity of the bead portion 8. A flame-retardant rubber composition having an oxygen index of not less than 19.8 but not more than 27.5 is disposed so as to amount to at least 20% by weight of the tread rubber layer 2. Such rubber tires are used in electric vehicles, automobiles, airplanes and the like and having excellent self-extinguishing property and flame-delaying property without damaging other rubber properties.

公开(公告)号：CA2082857C

公开(公告)日：1999-02-02

申请号：CA2082857

申请日：1992-11-13

Applicant: BRIDGESTONE CORP

Inventor： HASHIMOTO TAKATSUGU ,  AKUTAGAWA KEIZO ,  YAGAWA KAZUO ,  TANAKA MAKOTO ,  YAMAGISHI JUNICHI ,  HACHIYA KAZUO

IPC: B60C1/00 ,  B60C11/00

Abstract: In a flame-retardant rubber tire comprising an outer rubber body portion consisting essentially of a tread rubber layer, a sidewall rubber layer extending inward from each side edge of the tread rubber layer toward the vicinity of a bead portion in radial direction and a rubber chafer layer arranged in the vicinity of the bead portion, a flame-retardant rubber composition having an oxygen index of not less than 19.8 but not more than 27.5 is disposed so as to amount at least 20% by weight of the tread rubber layer. Such rubber tires are used in electric vehicles, automobiles, airplanes and the like and have excellent self-extinguishing property and flame-delaying property without damaging other rubber properties.

公开(公告)号：ES2092061T3

公开(公告)日：1996-11-16

申请号：ES92310449

申请日：1992-11-16

Applicant: BRIDGESTONE CORP

Inventor： HASHIMOTO TAKATSUGU ,  AKUTAGAWA KEIZO ,  YAGAWA KAZUO ,  TANAKA MAKOTO ,  YAMAGISHI JUNICHI ,  HACHIYA KAZUO

IPC: B60C1/00 ,  B60C11/00

Abstract: The invention provides a flame-retardant rubber tire comprising an outer rubber body portion consisting essentially of a tread rubber layer 2, a sidewall rubber layer 3 extending inwardly from each side edge of the tread rubber layer 2 toward the vicinity of a bead portion 8 in a radial direction and a rubber chafer layer arranged in the vicinity of the bead portion 8. A flame-retardant rubber composition having an oxygen index of not less than 19.8 but not more than 27.5 is disposed so as to amount to at least 20% by weight of the tread rubber layer 2. Such rubber tires are used in electric vehicles, automobiles, airplanes and the like and having excellent self-extinguishing property and flame-delaying property without damaging other rubber properties.

公开(公告)号：MX9206505A

公开(公告)日：1994-06-30

申请号：MX9206505

申请日：1992-11-12

Applicant: BRIDGESTONE CORP

Inventor： TANAKA MAKOTO ,  YAMAGISHI JUNICHI ,  HACHIYA KAZUO ,  HASHIMOTO TAKATSUGU ,  AKUTAGAWA KEIZO ,  YAGAWA KAZUO

IPC: B60C1/00 ,  B60C11/00 ,  B60B21/00

Abstract: The invention provides a flame-retardant rubber tire comprising an outer rubber body portion consisting essentially of a tread rubber layer 2, a sidewall rubber layer 3 extending inwardly from each side edge of the tread rubber layer 2 toward the vicinity of a bead portion 8 in a radial direction and a rubber chafer layer arranged in the vicinity of the bead portion 8. A flame-retardant rubber composition having an oxygen index of not less than 19.8 but not more than 27.5 is disposed so as to amount to at least 20% by weight of the tread rubber layer 2. Such rubber tires are used in electric vehicles, automobiles, airplanes and the like and having excellent self-extinguishing property and flame-delaying property without damaging other rubber properties.

公开(公告)号：DE69212435T2

公开(公告)日：1996-12-19

申请号：DE69212435

申请日：1992-11-16

Applicant: BRIDGESTONE CORP

Inventor： HASHIMOTO TAKATSUGU ,  AKUTAGAWA KEIZO ,  YAGAWA KAZUO ,  TANAKA MAKOTO ,  YAMAGISHI JUNICHI ,  HACHIYA KAZUO

IPC: B60C1/00 ,  B60C11/00

Abstract: The invention provides a flame-retardant rubber tire comprising an outer rubber body portion consisting essentially of a tread rubber layer 2, a sidewall rubber layer 3 extending inwardly from each side edge of the tread rubber layer 2 toward the vicinity of a bead portion 8 in a radial direction and a rubber chafer layer arranged in the vicinity of the bead portion 8. A flame-retardant rubber composition having an oxygen index of not less than 19.8 but not more than 27.5 is disposed so as to amount to at least 20% by weight of the tread rubber layer 2. Such rubber tires are used in electric vehicles, automobiles, airplanes and the like and having excellent self-extinguishing property and flame-delaying property without damaging other rubber properties.

公开(公告)号：EP2626687A4

公开(公告)日：2017-01-04

申请号：EP11830671

申请日：2011-10-04

Applicant: BRIDGESTONE CORP

Inventor： AKUTAGAWA KEIZO

IPC: G01N19/00 ,  G06F17/50

CPC classification number: G01N33/445 ,  G01N2203/0092 ,  G01N2203/0216 ,  G06F17/5018

Abstract: An elastic response performance prediction method that employs a finite element analysis method to predict an elastic response performance expressing deformation behavior of a rubber product. The elastic response performance of the rubber product is predicted by employing a constitutive equation that expresses temperature and strain dependence of strain energy in the rubber product, and that incorporates a number of links between cross-linked points in a statistical molecule chain, which is expressed using a parameter representing extension crystallization.

公开(公告)号：EP2626688A4

公开(公告)日：2016-05-25

申请号：EP11830672

申请日：2011-10-04

Applicant: BRIDGESTONE CORP

Inventor： AKUTAGAWA KEIZO

IPC: G01N19/00 ,  G01N33/44 ,  G06F17/50

CPC classification number: G06F17/5018 ,  G01N33/445 ,  G01N2203/0092 ,  G01N2203/0216

Abstract: An elastic response performance prediction method that employs a finite element analysis method to predict an elastic response performance expressing deformation behavior of a rubber product. The elastic response performance of the rubber product is predicted by employing a constitutive equation that expresses temperature and strain dependence of strain energy in the rubber product expressed using a parameter representing intermolecular interaction.

公开(公告)号：EP2395339A4

公开(公告)日：2015-10-21

申请号：EP10738625

申请日：2010-02-02

Applicant: BRIDGESTONE CORP

Inventor： HAMATANI SATOSHI ,  AKUTAGAWA KEIZO ,  SHIMA HIROSHI

IPC: G01N3/00 ,  G01N3/08

CPC classification number: G01N3/00 ,  G01N2203/0216 ,  G06F17/5018 ,  G06F17/5095 ,  G06F2217/80

Abstract: The present invention relates to a method for predicting a deformation behavior of a rubber material capable of accurately analyzing a deformation behavior of a rubber material even in a micro level, and more specifically, to a method for predicting a deformation behavior of a rubber material, including: generating a three-dimensional model of the rubber material formed by adding a filler to a rubber; applying a configuration condition specifying a relationship between a stress and a strain on the basis of thickness information and temperature information obtained on the basis of a molecular dynamics approach to a rubber layer portion constituting the three-dimensional model; and, analyzing the deformation behavior of the rubber material. Further, in the method for predicting a deformation behavior of a rubber material, it is preferable that the deformation behavior of the rubber material is analyzed by applying a finite element method to the three-dimensional model to which the configuration condition is applied.

公开(公告)号：EP1502805A4

公开(公告)日：2013-08-28

申请号：EP03723238

申请日：2003-05-06

Applicant: BRIDGESTONE CORP

Inventor： WAKAO YASUMICHI ,  AKUTAGAWA KEIZO

IPC: B60L15/20 ,  B60L3/10

CPC classification number: B60L3/102 ,  B60L15/20 ,  B60L15/2045 ,  B60L2220/46 ,  Y02T10/645 ,  Y02T10/7283

Abstract: A car control apparatus comprising a wheel sensor 13, wheel torque calculating means 23 for calculating wheel torque from the wheel speed, drive force detecting means 12 for detecting drive force generated by an electric motor 3, car body drive force calculating means 24 for calculating car body drive force from the above drive force and wheel torque, car body drive force fluctuating component extracting means 25 for extracting multiple frequency band fluctuating components of the car body drive force, and drive or braking force control unit 22 for controlling the running state of a car, wherein drive or braking force to be applied to each wheel is obtained from main drive force, slip ratio control drive force and tire disturbance compensation drive force calculated based on the extracted fluctuating components of the car body drive force and supplied to a motor controller 11 to drive or brake the drive wheel 2 and apply micro-vibration to the tire in order to suppress micro-vibration generated between the tire and the road surface, thereby making it possible to improve the road holding properties of the tire and the driving stability of the car by compensating for disturbance applied to the tire.

公开(公告)号：EP1223071A4

公开(公告)日：2004-10-20

申请号：EP01945618

申请日：2001-06-27

Applicant: BRIDGESTONE CORP

Inventor： AKUTAGAWA KEIZO ,  SAWADA HIROKI

IPC: B60L3/10 ,  B60L15/20 ,  B60W30/02

CPC classification number: B60L3/104 ,  B60L3/10 ,  B60L3/108 ,  B60L15/20 ,  B60T2210/12 ,  Y02T10/645 ,  Y02T10/7275

Abstract: When the drive torque of an electric motor for driving the wheels of a vehicle is subjected to a feedback control so as to be a motor torque command value, a signal of small vibration is superposed on the drive signal of the electric motor to apply the small vibration to the tires. As a result the slip ratio-friction characteristic of the tires is varied to control the frictional forces between the tires and the road surface and thereby to control the travel performance of the vehicle.