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公开(公告)号：DE69918601T2
公开(公告)日：2005-07-28
申请号：DE69918601
申请日：1999-05-06
Applicant: BRIDGESTONE CORP
Inventor： KADOTA KUNINOBU
Abstract: In a pneumatic radial tire having a belt of at least two belt layers, in which the belt (24) comprises a maximum-width belt layer (25) containing cords (28) slantly arranged with respect to an equatorial plane (S) of the tire and a narrow-width belt layer (26) arranged at the outside of the maximum-width belt layer in a radial direction and containing cords (29) arranged in an oppositely inclined direction to the cords of the maximum-width belt layer, the belt end separation is controlled by arranging a reinforcing layer (35) containing cords (36) arranged in an oppositely inclined direction to the cords (28) of the maximum-width belt layer (25) so as to overlap with an outer end portion (25a) of the maximum-width belt layer (25) located outward from an outer end (26a) of the narrow-width belt layer (26) in the widthwise direction thereof.
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公开(公告)号：DE69918601D1
公开(公告)日：2004-08-19
申请号：DE69918601
申请日：1999-05-06
Applicant: BRIDGESTONE CORP
Inventor： KADOTA KUNINOBU
Abstract: In a pneumatic radial tire having a belt of at least two belt layers, in which the belt (24) comprises a maximum-width belt layer (25) containing cords (28) slantly arranged with respect to an equatorial plane (S) of the tire and a narrow-width belt layer (26) arranged at the outside of the maximum-width belt layer in a radial direction and containing cords (29) arranged in an oppositely inclined direction to the cords of the maximum-width belt layer, the belt end separation is controlled by arranging a reinforcing layer (35) containing cords (36) arranged in an oppositely inclined direction to the cords (28) of the maximum-width belt layer (25) so as to overlap with an outer end portion (25a) of the maximum-width belt layer (25) located outward from an outer end (26a) of the narrow-width belt layer (26) in the widthwise direction thereof.
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公开(公告)号：ES2068901T3
公开(公告)日：1995-05-01
申请号：ES89310532
申请日：1989-10-13
Applicant: BRIDGESTONE CORP
Inventor： KADOTA KUNINOBU , YAMADA SHIGEKI
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公开(公告)号：ES2050247T3
公开(公告)日：1994-05-16
申请号：ES89309469
申请日：1989-09-18
Applicant: BRIDGESTONE CORP
Inventor： KOHNO YOSHIHIDE , KADOTA KUNINOBU , KOSEKI HIROYUKI , MATSUSHITA NORINAGA
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公开(公告)号：CA1271114A
公开(公告)日：1990-07-03
申请号：CA504175
申请日：1986-03-14
Applicant: BRIDGESTONE CORP
Inventor： FURUYA SHINICHI , KADOTA KUNINOBU , TOGASHI MINORU , KATO KENSHIRO
Abstract: REDUCED ROLLING RESISTANCE PNEUMATIC RADIAL TIRE 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 R1 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/p 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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Patent Agency Ranking
公开(公告)号：AU591584B2
公开(公告)日：1989-12-07
申请号：AU7905887
申请日：1987-09-29
Applicant: BRIDGESTONE CORP
Inventor： KADOTA KUNINOBU
Abstract: A pneumatic radial tire for airplanes comprises a carcass (1) composed of a plurality of organic fiber cord plies and a belt composed of a combination of a cross belt layer structure (2) and a circumferential belt layer structure (3). 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.
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公开(公告)号：FR2628035A1
公开(公告)日：1989-09-08
申请号：FR8902595
申请日：1989-02-28
Applicant: BRIDGESTONE CORP
Inventor： KADOTA KUNINOBU
Abstract: A high inner pressure heavy duty pneumatic radial tire includes a carcass of a plurality of plies made of laminated organic fiber cord layers of which one ply is turned up about bead cores, and a belt made of a plurality of laminated cord reinforcing layers. The belt includes at least one set of packing structural reinforcing layers. Each of the packing structrure reinforcing layers includes cord reinforcing layers wider than a width of the arranged belt and having width edges folded inwardly to form folded layers and further cord reinforcing layers having widths as cut corresponding to inner widths of the folded layers and surrounded by the folded layers to form inner core reinforcing layers. The further core reinforcing layers are higher in circumferential rigidity than the first mentioned core reinforcing layers. Cords of the first mentioned cord reinforcing layers and the further core reinforcing layers are made of material substantially the same at least in modulus of elasticity.
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公开(公告)号：AU5471786A
公开(公告)日：1986-09-18
申请号：AU5471786
申请日：1986-03-13
Applicant: BRIDGESTONE CORP
Inventor： FURUYA SHINICHI , KADOTA KUNINOBU , TOGASHI MINORU , KATO KENSHIRO
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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公开(公告)号：DE60020418T2
公开(公告)日：2006-03-16
申请号：DE60020418
申请日：2000-01-27
Applicant: BRIDGESTONE CORP
Inventor： TSUKAGOSHI TETSUHITO , WATANABE TAKESHI , KADOTA KUNINOBU , OGAWA YUICHIRO
IPC: B60C15/00 , B29D30/32 , B60C13/00 , B60C15/024 , B60C15/06
Abstract: A pneumatic tire comprises a carcass comprised of at least one carcass ply (15) containing a steel cord(s) arranged at a cord angle of 70-90 DEG with respect to an equatorial plane of the tire and toroidally extending between a pair of bead cores (14) and turned up around the bead core inward or outward in a radial direction to form a turnup portion, wherein a wrap part (17) wrapping on a peripheral face of the bead core therealong is formed in the turnup portion of the carcass ply.
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公开(公告)号：DE3752326D1
公开(公告)日：2001-02-22
申请号：DE3752326
申请日：1987-11-06
Applicant: BRIDGESTONE CORP
Inventor： SATO KIYOSHI , KADOTA KUNINOBU , SHIMADA TATSURO , KOSEKI HIROYUKI
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.
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