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    PNEUMATIC RADIAL TIRES FOR AIRPLANES
    14.
    发明专利
    PNEUMATIC RADIAL TIRES FOR AIRPLANES 未知

    公开(公告)号：CA1283033C

    公开(公告)日：1991-04-16

    申请号：CA552117

    申请日：1987-11-18

    Applicant: BRIDGESTONE CORP

    Inventor： KADOTA KUNINOBU

    IPC: B60C9/18 ,  B60C9/08 ,  B60C9/22 ,  B60C9/26 ,  B60C19/00 ,  B64C25/36 ,  B60C9/20

    Abstract: PNEUMATIC RADIAL TIRES FOR AIRPLANES A pneumatic radial tire for airplanes comprises a carcass composed of plural organic fiber cord plies and a belt composed of a combination of cross belt layer structure and circumferential belt layer structure. The cross belt layer structure is comprised of at least two organic fiber cord layers, the cords of which layers being crossed with each other, and the circumferential belt layer structure is comprised of at least two organic fiber cord layers in such a manner that the number of cross belt layers is made larger at both side regions of the tread than at the central region thereof and the number of circumferential belt layers is made larger at the central region than at both side regions.

    REDUCED ROLLING RESISTANCE PNEUMATIC RADIAL TIRE
    16.
    发明专利
    REDUCED ROLLING RESISTANCE PNEUMATIC RADIAL TIRE 未知

    公开(公告)号：AU568447B2

    公开(公告)日：1987-12-24

    申请号：AU5471786

    申请日：1986-03-13

    Applicant: BRIDGESTONE CORP

    Inventor： FURUYA SHINICHI ,  KADOTA KUNINOBU ,  TOGASHI MINORA ,  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.

    17.
    发明专利
    未知

    公开(公告)号：DE3752326T2

    公开(公告)日：2001-08-09

    申请号：DE3752326

    申请日：1987-11-06

    Applicant: BRIDGESTONE CORP

    Inventor： SATO KIYOSHI ,  KADOTA KUNINOBU ,  SHIMADA TATSURO ,  KOSEKI HIROYUKI

    IPC: B60C3/04 ,  B60C11/00

    Abstract: A heavy duty radial tire includes at least one radial carcass extending from one bead portion to the other bead portion and using inextensible cords and a belt arranged outwardly of the radial carcass for reinforcing a tread of the tire. The tire comprises, during expanding of the tire from 5% to 100% of a normal inner pressure, a first profile portion (5) expanding radially outwardly in a tread zone, a second profile portion (7) depressing axially inwardly of the tire in a radially outer zone of a sidewall from one end (4) of said tread to a tire maximum width position (6) when filled with the normal inner pressure, and a third profile portion (9) expanding axially outwardly of the tire in a radially inner zone of the sidewall from the tire maximum width position (6) when filled with the normal inner pressure to a parting point (8) of the sidewall from the rim, thereby properly distributing strains occurring in the tire in filling with the normal inner pressure. Moreover, a carcass profile in the radial cross-section of the tire filled with an inner pressure 5% of the normal inner pressure and under no load condition is a composite curve smoothly passing through points R, A and G, and the carcass profile fulfills three relations relative to a maximum distance H of the carcass line C from the bead base line RL with respect to maximum distance deviated from an equilibrium configuration curve N.

    19.
    发明专利
    未知

    公开(公告)号：FR2624063B1

    公开(公告)日：1994-04-29

    申请号：FR8816075

    申请日：1988-12-07

    Applicant: BRIDGESTONE CORP

    Inventor： AOKI YASUTOSHI ,  KADOTA KUNINOBU

    IPC: B60C9/18 ,  B60C9/22 ,  B60C15/00

    Abstract: A heavy duty pneumatic radial tire includes a toroidal carcass consisting of plies having cords arranged in parallel with each other, and a plurality of belt layers interposed between the carcass and a tread of the tire. At least one of the plies has turn-up portions folded about a pair of bead cores from inside to outside of the tire. The tire comprises a crown protective layer arranged between the belt layers and the tread. The crown protective layer comprises wave-form cords or wave-form filaments. The tire further comprises a cushion rubber layer arranged radially inward of the protective layer and made of a rubber having a modulus less than 70 kg/cm2 under 100% elongated condition. A distance between cords of a radially outermost layer of the belt layers and the wave-form cords or the wave-form filaments of the radially innermost layer of the crown protective layer is more than 1.5 mm.

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