Search International and National Patent Collections

1. (WO2017065290) TIRE

Pub. No.:    WO/2017/065290    International Application No.:    PCT/JP2016/080590
Publication Date: Fri Apr 21 01:59:59 CEST 2017 International Filing Date: Sat Oct 15 01:59:59 CEST 2016
IPC: B60C 11/16
Applicants: BRIDGESTONE CORPORATION
株式会社ブリヂストン
Inventors: WADA Junichiro
和田 淳一郎
ITO Tomoaki
伊藤 智明
Title: TIRE
Abstract:
In order to provide a tire in which the front-surface side of a tread is provided with stud-attachment attachment holes that enable demolding performance and anti-stud-removal performance, a tire in which the front surface 14a side of a tread 14 is provided with attachment holes 3 via which studs are attached, wherein the tire is characterized in being provided with: an opening side part 31, which is provided on one side of the attachment hole 3 relative to the direction following the center axis 3C, and which opens on the front surface 14a of the tread 14; and a bottom side part 32 that is provided to the attachment hole 3 on the other side in the direction following the center axis 3C, the surface along the center axis 3C of the attachment hole 3 on the inner circumference surface 36 of the bottom side part 32 being formed by a curved surface protruding in the direction heading away from the center axis 3C of the attachment hole 3, and a position 36M at the maximum diameter C of the inner circumference surface 36 of the bottom side part 32 being formed at a position closer to a hole bottom surface 35 side than an intermediate position between the hole bottom surface 35 and a boundary position 37 between the opening side part 31 and the bottom side part 32.