Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP3148329
Kind Code:
B2
Abstract:
PURPOSE: To prevent river wear produced on rib both side end parts nipped with longitudinal grooves during travel by providing protruded region parts, protruding from a rib standard surface on a circumference of ribs on main grooves both sides nearest to shoulder ends and having sipes of a degree of closing when a tire is grounded, at intervals.
CONSTITUTION: Narrow-width protruded region parts 8, protruding from a rib standard surface 6, crossing in nearly parallel to a tire width direction on circumference in both side parts in a circumferential direction, and having sipes 7 of a degree of closing when a tire is grounded are arranged on a circumference of a at rib 4 intervals. Moreover, sipes 10, each one end part of which is opened in main grooves 3, are formed on a standard region part 9, positioned in the protruded region parts 8 and composing the rib standard surface 6. Consequently, river wear can be prevented with sipes 10, and toe and heel abrasion can be checked with the protruded region parts 8.
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Inventors:
Hiroshi Nakamura
Application Number:
JP3221492A
Publication Date:
March 19, 2001
Filing Date:
February 19, 1992
Export Citation:
Assignee:
Toyo Tire & Rubber Co., Ltd.
International Classes:
B60C11/00; B60C11/04; B60C11/12; (IPC1-7): B60C11/12
Attorney, Agent or Firm:
Taiho Ohshima