公开(公告)号：US09821609B2

公开(公告)日：2017-11-21

申请号：US14783436

申请日：2014-04-02

Applicant: BRIDGESTONE CORPORATION

Inventor： Takeshi Yano

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

CPC classification number: B60C11/0327 ,  B60C11/042 ,  B60C11/1353 ,  B60C11/1369 ,  B60C2011/0341 ,  B60C2011/0355 ,  B60C2011/1361 ,  B60C2200/02

Abstract: An object is to, in an aircraft tire, promote heat dissipation from circumferential direction grooves of a tread and improve durability of the tire. Plural circumferential direction grooves (central side circumferential direction grooves (14), edge portion side circumferential direction grooves (16)) that extend in a tire circumferential direction are formed in a tread (12). In a tire circumferential direction cross-section, a groove bottom (18) of at least one of the circumferential direction grooves has a wave shape having amplitude in a tire radial direction.

公开(公告)号：US11519824B2

公开(公告)日：2022-12-06

申请号：US16771487

申请日：2018-12-13

Applicant: BRIDGESTONE CORPORATION

Inventor： Shoji Oida ,  Naoto Okazaki ,  Takeshi Yano ,  Tomotaka Sakiyama

IPC: G01M17/00 ,  B64C25/00 ,  G01N3/00 ,  B60C11/00 ,  G01M17/02 ,  B64C25/36 ,  G01N3/56 ,  B60C11/24

Abstract: A wear amount estimation device estimates plural kinds of wear energy depending on each of an internal pressure of aircraft tires, a load acting on the aircraft tires, a velocity of an aircraft, a slip angle caused in the aircraft tires, and a braking force of the aircraft, in accordance with each of these elements and wear energy EFR of the aircraft tires in a state of a free rolling run The wear amount estimation device estimates the wear amount wear of the aircraft tires in accordance with each of the calculated wear energy and a wear resistance R indicating a relationship between predetermined wear energy and a predetermined wear amount.