公开(公告)号：US20060266455A1

公开(公告)日：2006-11-30

申请号：US10538175

申请日：2003-12-10

Applicant: Syu Nagai

Inventor： Syu Nagai

IPC: B60C11/03

CPC classification number: B60C9/30 ,  B60C11/0304 ,  B60C11/033

Abstract: An object is to provide a pneumatic tire having an enhanced high-speed durability without deterioration in steering stability. A pneumatic tire 10 includes a belt 14 and a tread section 16 on an outside of a crown part 12C in this order, and has different negative ratios of the tread section 16 between both sides of a tire equatorial plane 10C. A belt width Ba from a belt end 14I on the higher negative ratio side to the tire equatorial plane 10C and a belt width Bb from a belt end 14E on the lower negative ratio side to the tire equatorial plane 10C satisfy a relationship of Ba>Bb. It is thereby possible to efficiently suppress a shoulder section 18 from projecting due to a centrifugal force during high-speed rolling. It is thereby possible to efficiently reduce a strain and a heat generated in a rubber member of the shoulder section 18, and efficiently enhance high-speed durability. Further, by ensuring that a grounding width on an OUT side is equivalent to that of a conventional one, it is possible to prevent deterioration in steering stability.

Abstract translation: 本发明的目的是提供一种具有增强的高速耐久性而不降低操纵稳定性的充气轮胎。 充气轮胎10在胎冠部12C的外侧依次包括皮带14和胎面部16，并且胎面部16在轮胎赤道平面10的两侧之间具有不同的负比率。带宽度 来自相对于轮胎赤道面10C的较高负比侧的带端部14I和下侧负侧比侧轮胎赤道面10C的带端部14E的带宽度Bb的Ba满足Ba> Bb。 由此，能够有效地抑制高速轧制时由于离心力而使肩部18突出。 由此，能够有效地降低肩部18的橡胶部件产生的应变和热，有效地提高高速耐久性。 此外，通过确保OUT侧的接地宽度与常规接地宽度相当，可以防止操纵稳定性的劣化。

公开(公告)号：US08210220B2

公开(公告)日：2012-07-03

申请号：US12158455

申请日：2006-12-19

Applicant: Syu Nagai ,  Atsushi Miyasaka

Inventor： Syu Nagai ,  Atsushi Miyasaka

IPC: B60C11/03 ,  B60C11/13 ,  B60C11/04

CPC classification number: B60C11/032 ,  B60C11/0304 ,  B60C11/0318 ,  B60C2011/0374 ,  B60C2011/0383 ,  Y10S152/901

Abstract: A pneumatic tire having a tread surface provided with a plurality of circumferential grooves and lateral grooves each having one end opened into that circumferential groove and the other end terminating in a land portion. At least one lateral groove is always included completely in the ground contact surface of the tread. The groove width of the lateral grooves is at least locally not less than 30% of the groove width of the circumferential grooves. Each lateral groove has an extending length not less than 40% of an extending length of the circumferential grooves in the ground contact surface and is provided with a region having a cross-sectional area which increases from its side of opening into the circumferential groove toward its terminal end, and including a starting end with a minimum cross-sectional area that is situated closer to the circumferential groove in which the lateral groove opens.

Abstract translation: 一种充气轮胎，其具有设置有多个周向槽和横向槽的胎面，所述多个周向槽具有一端开放到所述周向槽中，另一端终止于陆部。 至少一个横向槽总是完全包含在胎面的接地表面中。 横向槽的槽宽至少局部地不小于周向槽的槽宽度的30％。 每个横向槽具有不小于接地表面中的周向槽的延伸长度的40％的延伸长度，并且设置有从其开口侧向周向槽朝向其的横截面积增加的区域 并且包括起始端，其具有位于更靠近横向槽打开的周向槽的最小横截面面积。

公开(公告)号：US20090272474A1

公开(公告)日：2009-11-05

申请号：US12158455

申请日：2006-12-19

Applicant: Syu Nagai ,  Atsushi Miyasaka

Inventor： Syu Nagai ,  Atsushi Miyasaka

IPC: B60C11/04

CPC classification number: B60C11/032 ,  B60C11/0304 ,  B60C11/0318 ,  B60C2011/0374 ,  B60C2011/0383 ,  Y10S152/901

Abstract: A pneumatic tire sufficiently enhances the frequency dispersion effect for the columnar resonance noise due to the presence of the circumferential grooves, per se, or the lowering effect for the sound pressure level, in association with the cross-sectional area of the lateral grooves. The tire has a tread surface provided with a plurality of circumferential grooves (2, 4) extending continuously in a circumferential direction. The circumferential grooves (2, 4) are each provided with a plurality of lateral grooves (7, 8) each having one end opened into that circumferential groove and the other end terminating in a land portion (7, 8), independently from other circumferential grooves, other lateral grooves opening into said other circumferential grooves or in a ground contacting end of a tread. The circumferential grooves (2, 4) and the lateral grooves (7, 8) each has a groove widths determined such that their opposite groove walls do not contact each other under a tire posture wherein the tire is mounted onto an approved rim, filled with the maximum air pressure and loaded with a mass that corresponds to the maximum load capacity of the tire. The lateral grooves are arranged so that at least one lateral groove is always included completely in the ground contact surface of the tread. The groove width of the lateral grooves is at least locally not less than 30% of the groove width of the circumferential grooves. Each lateral groove has an extending length which is not less than 40% of an extending length of said circumferential grooves in said ground contact surface. Each lateral groove (7, 8) is provided with a region having a cross-sectional area which increases from its side of opening end into the circumferential groove (2, 4) toward its side of the terminal end, and including a starting end with a minimum cross-sectional area point (A) that is situated closer to the circumferential groove 2, 4 in which the lateral groove (7, 8) opens, than a maximum cross-sectional area point (B) at the terminal end of the increasing cross-sectional area region.