公开(公告)号：US20240051340A1

公开(公告)日：2024-02-15

申请号：US18269468

申请日：2021-10-26

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Momoka MISAKI ,  Miao DONG ,  Hiroki KAWAI

IPC: B60C9/00 ,  B60C9/18 ,  B60C3/04 ,  B60C9/20

CPC classification number: B60C9/0064 ,  B60C9/1821 ,  B60C3/04 ,  B60C9/20 ,  B60C2009/2083

Abstract: A pneumatic tire having a tread section and a belt layer, wherein monofilament cords are used as reinforcing cords in the belt layer, and an arranged number e of the monofilament cords per 5 cm in the tire-width direction (cords/5 cm) in a tire radial direction cross-section of the belt layer, and a tire cross-sectional width Wt (mm), incorporated in a standardized rim and with an internal pressure of 250 kPa, satisfies (formula 1) and (formula 2) below:


e/(0.31Wt+14.35)>1  (formula 1);



e/(0.31Wt+56.45)  (formula 2).

公开(公告)号：US20240066926A1

公开(公告)日：2024-02-29

申请号：US18269440

申请日：2021-10-19

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Momoka MISAKI ,  Miao DONG ,  Hiroki KAWAI

IPC: B60C9/00 ,  B60C9/20 ,  B60C11/13

CPC classification number: B60C9/0064 ,  B60C9/20 ,  B60C11/13 ,  B60C2009/2083 ,  B60C2013/006

Abstract: A pneumatic tire having a side portion and a belt layer, monofilament cords are used as reinforcing cords in the belt layer, and in a tire-radial-direction cross-section of the belt layer, an arrangement number e of monofilament cords per 5 cm in a tire width direction (cords/5 cm) and a tire cross-sectional width Wt (mm) when the tire is installed to a standardized rim and an inner pressure is set to 250 kPa satisfies the following (formula 1) and (formula 2):


e/(139.5−0.3Wt)>1   (formula 1)



e/(191.5−0.3Wt)

公开(公告)号：US20240051339A1

公开(公告)日：2024-02-15

申请号：US18269454

申请日：2021-10-26

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Momoka MISAKI ,  Miao DONG ,  Hiroki KAWAI

IPC: B60C9/00 ,  B60C9/18 ,  B60C9/20 ,  B60C3/04

CPC classification number: B60C9/0064 ,  B60C9/1821 ,  B60C9/20 ,  B60C3/04 ,  B60C2009/2083

Abstract: A pneumatic tire having a tread portion and a belt layer, wherein the reinforcing cords in the belt layer are composed of monofilament cords arranged in the tire width direction at least 50 cords/5 cm in the cross section of the belt layer in the tire radial direction. A pneumatic tire that is installed on a standardized rim and satisfies the following (formula 1), where Wt (mm) is the cross-sectional width of the tire and Dt (mm) is the outer diameter of the tire when the internal pressure is 250 kPa:


1500≤(Dt2×π/4)/Wt  (formula 1).