Title:
空気入りタイヤ
Document Type and Number:
Japanese Patent JP7287178
Kind Code:
B2
Abstract:
To provide a pneumatic tire restraining the center uneven wear thereof and improving the linearity of steering stability.SOLUTION: An objective pneumatic tire satisfies the relation of 0.05≤(R×D/2A)2×[(CP100-CP75)/(W100-W75)]/[(CP75-CP40)/(W75-W40)]≤0.50 when defining the cornering powers measured by the loads W40, W75 and W100 (kN) corresponding to 40%, 75% and 100% of maximum load capacity established by the specification of pneumatic pressure 230kPa as CP40, CP75 and CP100 (kN/°), a flat ratio as R, an outer diameter as D(mm) and a nominal tire sectional width as A(mm). The tire includes at least one central major groove 11 and two shoulder main grooves 12 located at an outermost side in a width direction, and a cross-sectional profile which defines the tread of the land parts 20, 30 in a center area Xc protrudes to the outside of the reference profile line PLc of the center area Xc in a radial direction when defining the inside of the shoulder main groove as the center area Xc.SELECTED DRAWING: Figure 3
Inventors:
Ryosuke Nukushina
Application Number:
JP2019149112A
Publication Date:
June 06, 2023
Filing Date:
August 15, 2019
Export Citation:
Assignee:
Yokohama Rubber Co., Ltd.
International Classes:
B60C11/00; B60C9/18; B60C11/03
Domestic Patent References:
| JP62152906A | ||||
| JP201674391A | ||||
| JP2014184808A | ||||
| JP201688120A | ||||
| JP200575289A | ||||
| JP2005132305A | ||||
| JP201217001A | ||||
| JP2006213205A | ||||
| JP200978790A |
Attorney, Agent or Firm:
Clear stream international patent attorney corporation
Takayoshi in the daytime
Masao Sakaizawa
Takayoshi in the daytime
Masao Sakaizawa