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    Neumático y método de fabricación del mismo
    11.
    发明专利
    Neumático y método de fabricación del mismo 未知

    公开(公告)号：ES2379797T3

    公开(公告)日：2012-05-03

    申请号：ES05766457

    申请日：2005-07-20

    Applicant: BRIDGESTONE CORP

    Inventor： KAMEGAWA TATSUHIKO ,  KATO KENSHIRO ,  TSURUTA MAKOTO ,  MIYAZONO TOSHIYA ,  WAKI YOSHIYUKI

    IPC: B60C15/00 ,  B29D30/48 ,  B60C15/06

    Abstract: Un neumático que comprende una carcasa (2) que se extiende toroidalmente entre un par de núcleos (1) de talón embebidos en respectivas porciones de talón, en el que la carcasa se combina con el núcleo del talón, estando la carcasa provista, en un lado interior de la cavidad, de un centro (0) del espesor de la parte de talón en una dirección axial del neumático, que llega hasta una cara del núcleo del talón que está frente al lado interior de la cavidad del neumático y a continuación entra en el núcleo del talón desde el lado interior de la cavidad del neumático, atraviesa el núcleo del talón, sale del núcleo del talón desde la cara radialmente mas interior del núcleo del talón y termina en contacto con la cara radialmente más interna del núcleo del talón.

    12.
    发明专利
    未知

    公开(公告)号：ES2161985T3

    公开(公告)日：2001-12-16

    申请号：ES96308628

    申请日：1996-11-28

    Applicant: BRIDGESTONE CORP

    Inventor： KATO KENSHIRO

    IPC: B60C9/08 ,  B60C3/04 ,  B60C9/18 ,  B60C9/20 ,  B60C15/00 ,  B60C15/02 ,  B60C15/024 ,  B60C15/04 ,  B60C15/06

    Abstract: In a pneumatic radial tire for trucks and buses mounted on a 15 DEG center drop rim, an envelope surface (4-13) of the bead core (4) among members constituting the bead portion (1) of the tire has a curved shape concavedly directing toward the outside of the tire at a region opposite to an inner curved surface (21S) of a slantly rising portion in a flange (21F) of an approved rim (21), whereby the durability of the bead portion and the steering stability of the tire may be considerably improved.

    High pressure, low rolling resistance radial tire
    17.
    发明专利
    High pressure, low rolling resistance radial tire 未知

    公开(公告)号：GB2148806A

    公开(公告)日：1985-06-05

    申请号：GB8423239

    申请日：1984-09-14

    Applicant: BRIDGESTONE CORP

    Inventor： TOGASHI MINORU ,  TSUDA TORU ,  KATO KENSHIRO ,  FARUYA SHINICHI

    IPC: B60C3/04 ,  B60C9/08

    Abstract: In order to minimise the reduction of the restoring torque (self-aligning torque), and to further reduce rolling resistance, in a pneumatic radial tire for passenger cars which is used at an internal pressure 25 to 50% higher than normal, the carcass has a radial profile such that when the tire is mounted on a normal rim and inflated at a working internal pressure, a ratio of radii R/R' is within a range of 0.65-0.85 and f is within a range of 5-10 mm, where R' is a radius of a standard arc passing through points B, E and C; R is a radius of curvature in a curved line of a shoulder profile of the carcass line passing through the point C, and f is a maximum distance between the standard arc and the remaining carcass line smoothly extending from the curved line of the shoulder profile to the point B and having a single inflection point. Further, to improve ride comfort and the restoring torque, the tread has a width corresponding to only 55-62% of the maximum tire width.

    18.
    发明专利
    未知

    公开(公告)号：DE69614976D1

    公开(公告)日：2001-10-11

    申请号：DE69614976

    申请日：1996-11-28

    Applicant: BRIDGESTONE CORP

    Inventor： KATO KENSHIRO

    IPC: B60C9/08 ,  B60C3/04 ,  B60C9/18 ,  B60C9/20 ,  B60C15/00 ,  B60C15/02 ,  B60C15/024 ,  B60C15/04 ,  B60C15/06

    Abstract: In a pneumatic radial tire for trucks and buses mounted on a 15 DEG center drop rim, an envelope surface (4-13) of the bead core (4) among members constituting the bead portion (1) of the tire has a curved shape concavedly directing toward the outside of the tire at a region opposite to an inner curved surface (21S) of a slantly rising portion in a flange (21F) of an approved rim (21), whereby the durability of the bead portion and the steering stability of the tire may be considerably improved.

    20.
    发明专利
    未知

    公开(公告)号：FR2578789B1

    公开(公告)日：1989-09-22

    申请号：FR8603706

    申请日：1986-03-14

    Applicant: BRIDGESTONE CORP

    Inventor： FURUYA SHINICHI ,  KADOTA KUNINOBU ,  TOGASHI MINORU ,  KATO KENSHIRO

    IPC: B60C3/04 ,  B60C9/20 ,  B60C11/00 ,  B60C15/06

    Abstract: A heavy duty pneumatic radial tire includes a carcass consisting of at least one layer of metal cords substantially radially arranged, a breaker consisting of at least two layers of metal cords to form a main reinforcement with the carcass, and bead portions including hard and soft stiffeners. The carcass has a particular radial profile having a ratio of radii R/R' determined by a radius R' of a standard circle and a radius R determined by a particular definition and has a maximum distance f between an arc of the standard circle and the remaining carcass line smoothly extending from the profile curvature of the shoulder. Moreover a radial profile over a radially inner zone of the sidewall of 20-45% of the radial height SH has a curvature 1/ rho less than 6x10-3 mm-1 at a location 32.5% of the radial height corresponding to a center of the profile.

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