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    Heavy duty pneumatic tire including lug grooves and shallow circumferential groove
    31.
    发明授权
    Heavy duty pneumatic tire including lug grooves and shallow circumferential groove 有权
    重型充气轮胎包括横向槽和浅周向槽

    公开(公告)号：US06347653B1

    公开(公告)日：2002-02-19

    申请号：US09504913

    申请日：2000-02-16

    Applicant: Yasuhiko Kobayashi

    Inventor： Yasuhiko Kobayashi

    IPC: B60C1103

    CPC classification number: B60C11/042 ,  B60C11/0309 ,  B60C11/0311 ,  B60C2011/0388 ,  B60C2200/065

    Abstract: A heavy duty pneumatic tire comprises a tread portion, a plurality of lug grooves formed in the tread portion so as to extend from a tread end toward an equator of the tire, and a central land portion formed between two circumferential lines passing through terminal positions of these lug grooves substantially in a circumferential direction of the tire, wherein the tread portion is made of rubber having a loss tangent at room temperature of 0.04˜0.40, and has a given negative ratio at a region corresponding to at least 50% of a tread width around the equator and a given maximum groove depth of the lug groove located at a zone corresponding to at least 80% of the tread width around the equator, and a circumferential shallow groove is formed in the central land portion.

    Abstract translation: 重型充气轮胎包括胎面部分，形成在胎面部分中的多个横向花纹沟，以便从轮胎的胎面端向赤道延伸，以及形成在穿过轮胎的终端位置的两个圆周线之间的中央陆地部分 这些花纹槽基本上在轮胎的圆周方向上，其中胎面部分由在室温为0.04〜0.40的损耗角正切的橡胶制成，并且在对应于胎面的至少50％的区域处具有给定的负比率 赤道周围的宽度以及位于相当于赤道周围的胎面宽度的至少80％的区域处的横向花纹槽的给定最大槽深度，并且在中央陆部中形成周向的浅槽。

    Pneumatic radial tire
    32.
    发明授权
    Pneumatic radial tire 失效
    气动子午线轮胎

    公开(公告)号：US4865103A

    公开(公告)日：1989-09-12

    申请号：US78951

    申请日：1987-07-29

    Applicant: Kazuomi Kobayashi ,  Minoru Nakano

    Inventor： Kazuomi Kobayashi ,  Minoru Nakano

    IPC: B60C9/18 ,  B60C9/20 ,  B60C9/22

    CPC classification number: B60C9/20 ,  B60C9/2009 ,  B60C2200/065

    Abstract: A pneumatic radial tire includes a belt layer consisting of a plurality of belt plies reinforced by cords. The cords of at least two adjacent belt plies are oblique in opposite directions with respect to an equatorial plane of the tire. The tire comprises a relieving ply overlapping the belt plies. A modulus of the relieving ply is less than that of the belt plies. A width of the relieving ply is wider than that of the belt ply having the widest width. Cords reinforcing the relieving ply is oblique with respect to the equatorial plane in the same directions as those of cords of the belt ply having the widest width. Separations at belt ends of the maximum width belt ply is effectively prevented.

    Abstract translation: 充气子午线轮胎包括由多个由帘线增强的带束层组成的带束层。 至少两个相邻带束层的帘线相对于轮胎的赤道平面在相反的方向上倾斜。 轮胎包括重叠皮带层的缓冲层。 缓冲层的模量小于带束帘布层的模量。 缓冲层的宽度宽于具有最宽宽度的带束层的宽度。 加强缓冲层的帘线相对于赤道面在与具有最宽宽度的带束层帘线相同的方向上倾斜。 有效防止最大宽度皮带层的皮带端部分离。

    Optimized Architecture of a Civil Engineering Tire
    35.
    发明公开
    Optimized Architecture of a Civil Engineering Tire 审中-公开

    公开(公告)号：US20240181811A1

    公开(公告)日：2024-06-06

    申请号：US18286965

    申请日：2022-04-11

    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

    Inventor： William LICENSE ,  François BARBARIN

    IPC: B60C9/02 ,  B60C9/04 ,  B60C15/00

    CPC classification number: B60C9/023 ,  B60C15/0027 ,  B60C2009/0425 ,  B60C2200/065

    Abstract: Radial carcass tire for a civil engineering vehicle, having two bead wires (2) of radial height Ht, and carcass reinforcement made of two layers, the first (1) being radially innermost with a radial height Hdc, is anchored in each bead to form a main part (11) and a turn-up (12). The second layer (3) is radially outside the first layer (1). The free end (A) of the turn-up (12) is at a radial distance from the radially outermost point (21) of the bead wire that is at least equal to 1 and at most equal to 2 times Ht. From the end A of the turn-up (12) to the point B at 85% of the radial height Hdc, the distance between carcass layers is at least equal to 2 and at most equal to 11 times the diameter of metal reinforcers of first carcass layer (1).

    Heavy duty pneumatic tire
    37.
    发明授权
    Heavy duty pneumatic tire 有权

    公开(公告)号：US09987885B2

    公开(公告)日：2018-06-05

    申请号：US15328440

    申请日：2015-07-23

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Risa Tauchi ,  Shoei Kakuta ,  Hideki Hamanaka ,  Yukihito Yamaguchi ,  Toshiyuki Sato

    IPC: B60C11/11 ,  B60C11/13 ,  B60C11/03 ,  B60C11/00

    CPC classification number: B60C11/13 ,  B60C11/00 ,  B60C11/03 ,  B60C11/0304 ,  B60C11/0309 ,  B60C11/11 ,  B60C2011/0025 ,  B60C2011/0346 ,  B60C2011/0348 ,  B60C2011/0351 ,  B60C2011/0353 ,  B60C2011/0355 ,  B60C2011/0365 ,  B60C2011/1361 ,  B60C2200/065

    Abstract: A pneumatic tire with improved heat build-up resistance in a land portion in a tread center region. The pneumatic tire is provided with a tread pattern that includes a plurality of center lug grooves (14) disposed at intervals in a tire circumferential direction that cross a tire equator line; a plurality of shoulder lug grooves (12A, 12B) disposed in intervals between the plurality of center lug grooves in the tire circumferential direction extending outward in the tire width direction, an inner end in the tire width direction being disposed outward of an end of the center lug groove in the tire width direction; a pair of circumferential primary grooves (11A, 11B) extending around an entire circumference of the pneumatic tire in a wave-like shape with the ends of the center lug grooves and the inner ends of the plurality of shoulder lug grooves in the tire width direction alternately connecting to the pair of circumferential primary grooves (11A, 11B); and a circumferential secondary groove (10) disposed on the tire equator line around the entire circumference of the pneumatic tire that intersects the center lug grooves. A straight line that joins an intersection portion between the center lug groove and the circumferential secondary groove and the end of the center lug groove has an inclination angle with respect to the tire circumferential direction ranging from 55° to 75°.

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