Title:
RADIAL TYRE FOR TRUCK
Document Type and Number:
Japanese Patent JPS6485803
Kind Code:
A
Abstract:
PURPOSE:To enhance low noise performance and travelling by providing plural straight circumferential grooves and plural transverse lug grooves and making the lug groove width on the tread center side small and making it on the shoulder sides large and as well offsetting the opening positions of center side lug grooves to them of shoulder sides lug grooves with each other. CONSTITUTION:Four straight grooves 1-1''' are provided along the circumferential direction, and lug grooves 2 are formed right and left with respect to a tread center. The groove width of the lug grooves 2 on the tread center side C is set small and it on the shoulder sides S is set large and it in portions therebetween is made change continuously or stagedly. In addition, the openings of the center side groove width (a) of the lug grooves 2 are offset to the openings of the shoulder side groove width (b) as not to face with each other. With this construction, both low noise performance and travelling can be enhanced.
Inventors:
YOSHIMI SHINGO
GOTO YUJI
KAWASHIMA NORIMASA
KURAMOCHI IZUMI
GOTO YUJI
KAWASHIMA NORIMASA
KURAMOCHI IZUMI
Application Number:
JP24276787A
Publication Date:
March 30, 1989
Filing Date:
September 29, 1987
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD
International Classes:
B60C11/11; (IPC1-7): B60C11/11
Attorney, Agent or Firm:
Shinichi Ogawa (2 outside)