Title:
PNEUMATIC RADIAL TIRE
Document Type and Number:
Japanese Patent JP3912875
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce a road noise of about 250-400 Hz band without increasing production processes while lightening a tire.
SOLUTION: In a pneumatic radial tire in which a carcass layer 2 is laid between a pair of bead parts 1, 1, and in which at least two layers of belt layers 4 are arranged in the outer circumferential side of the carcass layer 2 in a tread part 3, recesses U1, U2 are formed respectively in a buttress part and a side lower part of an antinode for a second vibration mode of area. By reducing mass of these parts, a tire natural frequency in a high frequency region is moved to high side. By increasing the tire natural frequency in the high frequency region to prevent the tire natural frequency from resonating with a vehicle natural frequency, the vibration is hardly propagated to a cabin inside, and a road noise of about 250-400 Hz band is reduced thereby.
Inventors:
Toshiyuki Ikeda
Riichiro Manama
Riichiro Manama
Application Number:
JP31295397A
Publication Date:
May 09, 2007
Filing Date:
November 14, 1997
Export Citation:
Assignee:
THE YOKOHAMA RUBBER CO.,LTD.
International Classes:
B60C11/01; B60C13/00; B60C15/00; (IPC1-7): B60C13/00; B60C15/00; //B60C11/01
Domestic Patent References:
| JP6320919A | ||||
| JP9109621A | ||||
| JP8175121A | ||||
| JP6024214A | ||||
| JP10166809A | ||||
| JP4218413A | ||||
| JP8216631A |
Attorney, Agent or Firm:
Shinichi Ogawa
Takashi Noguchi
Kazuhiko Saishita
Takashi Noguchi
Kazuhiko Saishita
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