Invention Grant
US09180738B2 Pneumatic tire with tread having lateral grooves 有权
具有胎面的气动轮胎具有横向槽

  • Patent Title: Pneumatic tire with tread having lateral grooves
  • Patent Title (中): 具有胎面的气动轮胎具有横向槽
  • Application No.: US10558255
    Application Date: 2004-05-10
  • Publication No.: US09180738B2
    Publication Date: 2015-11-10
  • Inventor: Keita Yumii
  • Applicant: Keita Yumii
  • Applicant Address: JP Tokyo
  • Assignee: BRIDGESTONE CORPORATION
  • Current Assignee: BRIDGESTONE CORPORATION
  • Current Assignee Address: JP Tokyo
  • Agency: Sughrue Mion, PLLC
  • Priority: JP2003-142984 20030521
  • International Application: PCT/JP2004/006247 WO 20040510
  • International Announcement: WO2004/103737 WO 20041202
  • Main IPC: B60C11/03
  • IPC: B60C11/03 B60C11/04 B60C11/12
Pneumatic tire with tread having lateral grooves
Abstract:
A pneumatic tire reduces the columnar resonance noise of the tire while controlling the lowering of wet performances, wherein four circumferential grooves continuously extending in the circumferential direction of the tire are disposed in a treading face and a plurality of lateral grooves each having one end opened to the circumferential groove and terminated in a land portion are formed with respect to two circumferential grooves among the four circumferential grooves, and these lateral grooves and the respective circumferential grooves have such a groove width that both groove walls of the groove do not contact with each other in a ground contact face and one or more lateral groove are always completely included in the ground contact face, and an extending length of a portion of each lateral groove in the ground contact face having a groove width of the lateral groove corresponding to not less than 30% of a groove width of the circumferential groove is made not less than 40% of an extending length of the circumferential groove in the ground contact face.
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