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公开(公告)号：BR8805397A
公开(公告)日：1989-06-20
申请号：BR8805397
申请日：1988-10-19
Applicant: BRIDGESTONE CORP
Inventor： KUKIMOTO TAKASHI , AOKI YASUTOSHI , YAMAGISHI NAOTO , USUI SHINJI
Abstract: An uneven wear-resisting heavy duty pneumatic tire comprises main grooves (1) continuously extending in the tread of the tire along the circumference thereof, land portions (2) separated by the main grooves, and stepped zones (3) each provided in the land. Each stepped zone has a surface located radially inside of the tread by a step as viewed sectionally. Each of said stepped zones is separated from the adjacent land portions via a pair of circumferentially extending narrow grooves (4) or cuts. An uneven wearing-sacrificing portion is formed by the surface of the stepped zone. The uneven wear-sacrificed portion slide-contacts with the tread within the tread ground-contacting area for supporting the load exerted upon the tire. (Figure 1b).
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公开(公告)号：FR2622843A1
公开(公告)日：1989-05-12
申请号：FR8814461
申请日：1988-11-04
Applicant: BRIDGESTONE CORP
Inventor： KOSEKI HIROYUKI , KOBAYASHI YASUHIKO , KUKIMOTO TAKASHI
Abstract: A pneumatic radial tire includes a carcass layer consisting of at least one carcass ply having cords embedded therein and extending substantially in radial directions, a tread arranged radially outwardly of the carcass layer, and a belt layer consisting of at least tow layers of belt plies having cords embedded therein intersecting with each other at angles within 10 DEG -40 DEG . The tire comprises a reinforcing layer arranged between the carcass layer and the belt ply arranged radially outermost and consisting of at most two layers of reinforcing plies having cords embedded therein substantially in parallel with an equatorial plane. Both outer ends of the reinforcing layer are positioned inwardly, in width directions, of locations spaced apart one fifth of a tread width of the tire from shoulder ends. Outer ends of at least one reinforcing ply are positioned inwardly, in the width directions, of outermost ends of main grooves in the tread between center ribs and side ribs. The side ribs are formed with a plurality of traverse grooves spaced apart from each other in circumferential directions and having both ends opening into the main grooves.
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公开(公告)号：CA1329356C
公开(公告)日：1994-05-10
申请号：CA580644
申请日：1988-10-19
Applicant: BRIDGESTONE CORP
Inventor： KUKIMOTO TAKASHI , AOKI YASUTOSHI , YAMAGISHI NAOTO , USUI SHINJI
Abstract: HEAVY DUTY PNEUMATIC TIRES PREVENTING UNEVEN WEARING An uneven wear-resisting heavy duty pneumatic tire comprises main grooves continuously extending in a tread of the tire along a circumference thereof, land portions separated by the main grooves, and stepped zones each provided in the land. Each stepped zone has a surface located radially inside of the tread by a step a viewed sectionally. Each of said stepped zones is separated from the adajcent land portions via a pair of circumferentially extending grooves or narrow cuts. An uneven wearing-sacrificing portion is formed by the surface of the stepped zone. The uneven wear-sacrificed portion slide-contacts with the tread within the tread ground-contacting area for supporting the load exerted upon the tire.
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公开(公告)号：FR2622844A1
公开(公告)日：1989-05-12
申请号：FR8814462
申请日：1988-11-04
Applicant: BRIDGESTONE CORP
Inventor： KOSEKI HIROYUKI , KUKIMOTO TAKASHI , SHOYAMA YOSHINOBU
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公开(公告)号：ES2380712T3
公开(公告)日：2012-05-17
申请号：ES07767087
申请日：2007-06-08
Applicant: BRIDGESTONE CORP
Inventor： GOTO NAOYUKI , KUKIMOTO TAKASHI , YOSHIDA GO
Abstract: Banda de rodadura precurada (1) que tiene una ranura circunferencial (2) que se extiende en una dirección circunferencial de un neumático sobre una superficie delantera que será una superficie de contacto con el suelo del neumático y una ranura de la superficie trasera (4) que se extiende en la dirección circunferencial del neumático en una superficie trasera para unirse a un neumático de base (3), apareciendo la ranura de la superficie trasera (4) desde una superficie de una banda de rodadura cuando progresa el desgaste de la superficie de la banda de rodadura, en la que, tal como se aprecia en una sección transversal en una dirección de la anchura del neumático, la ranura de la superficie trasera (4) tiene una forma generalmente trapezoidal, y una anchura de la ranura de la superficie trasera (4) es constante o cónica desde una parte inferior (5) hasta una abertura de la ranura (6), en la que la relación entre la anchura de la ranura de la superficie trasera (4) en la apertura (6) y en la parte inferior (5) está dentro de un rango de 1:1 a 1:2; caracterizada porque la ranura de la superficie trasera (4) tiene una porción curvada (9) entre el fondo de la ranura (5) y una pared de la ranura (7), con un radio de curvatura R que están dentro del siguiente rango: (la anchura de la ranura de la superficie trasera en la parte inferior)/2 > R > 0,5 mm.
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Patent Agency Ranking
公开(公告)号：ES2043841T3
公开(公告)日：1994-01-01
申请号：ES88309881
申请日：1988-10-20
Applicant: BRIDGESTONE CORP
Inventor： KUKIMOTO TAKASHI , AOKI YASUTOSHI , YAMAGISHI NAOTO , USUI SHINJI
Abstract: An uneven wear-resisting heavy duty pneumatic tire comprises main grooves (1) continuously extending in the tread of the tire along the circumference thereof, land portions (2) separated by the main grooves, and stepped zones (3) each provided in the land. Each stepped zone has a surface located radially inside of the tread by a step as viewed sectionally. Each of said stepped zones is separated from the adjacent land portions via a pair of circumferentially extending narrow grooves (4) or cuts. An uneven wearing-sacrificing portion is formed by the surface of the stepped zone. The uneven wear-sacrificed portion slide-contacts with the tread within the tread ground-contacting area for supporting the load exerted upon the tire. (Figure 1b).
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公开(公告)号：DE3776838D1
公开(公告)日：1992-04-02
申请号：DE3776838
申请日：1987-08-06
Applicant: BRIDGESTONE CORP
Inventor： KUKIMOTO TAKASHI
Abstract: A pneumatic radial tire having a tread (1) of asymmetrical profile is disclosed. A circumferential location at which the tread has its maximum outer diameter is deviated from the tire equator outwardly opposite to the side on which the tire is to be mounted to a vehicle, by a distance L equal to from 0.05 to 0.30 times the width W of the tread. A ratio of d2/d1 is equal to from 0.98 to 1.00 in which d1 and d2 are diameters of shoulders (2, 2') of the tread on the mounted tire outer side and mounted tire inner side, respectively. The susceptibility of the tires to uneven wear such as shoulder drop uneven wear, river wear and one side wear is improved.
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公开(公告)号：EP2028024A4
公开(公告)日：2010-07-28
申请号：EP07767087
申请日：2007-06-08
Applicant: BRIDGESTONE CORP
Inventor： GOTO NAOYUKI , KUKIMOTO TAKASHI , YOSHIDA GO
CPC classification number: B60C11/02 , B29D30/56 , B60C11/0306 , B60C11/04
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公开(公告)号：EP1034945A4
公开(公告)日：2002-05-22
申请号：EP99931492
申请日：1999-07-22
Applicant: BRIDGESTONE CORP
Inventor： KUKIMOTO TAKASHI , FUNATO NAOMICHI , YAMAMOTO SHINYA , IKUNO TOSHIFUMI , KOBAYASHI TAKASHI
CPC classification number: B60C11/11
Abstract: A pneumatic tire, particularly a pneumatic radial tire for heavy duty in which uneven wear resistance and noise resistance are improved without impairing a wet performance and a steering stability on a dry road surface and which provides a block type tread pattern comprising at least three main grooves extending in circumferential direction in the center area of a tread, S-shaped or Z-shaped block rows disposed between the main grooves, adjacent blocks in a row overlapping partly with each other in the circumferential direction, and shoulder block rows disposed in both side areas of the tread.
Abstract translation: 一种充气轮胎，特别是一种重负荷用充气子午线轮胎，其中在不损害湿路性能和干燥路面上的操纵稳定性的情况下改善了不均匀的耐磨性和抗噪声性，并且提供了一种包括至少三个主槽 在胎面的中央区域沿周向延伸的S字形或Z字形的花纹块列，配置在所述主槽之间的S字形或Z字形的花纹块列，在周向上相互重叠的一列的相邻花纹块， 胎面的区域。
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公开(公告)号：BRPI0712762A2
公开(公告)日：2012-10-02
申请号：BRPI0712762
申请日：2007-06-08
Applicant: BRIDGESTONE CORP
Inventor： GOTO NAOYUKI , KUKIMOTO TAKASHI , YOSHIDA GO
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