Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP3949938
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve wet performance and noise performance.
SOLUTION: A pneumatic tire has at least one longitudinal groove 3 recessed for extension in a tire circumference direction in a tread surface 2. At least either groove wall surface 6 of the longitudinal groove 3 includes a chamfered slant wall portion 8 slanting in a direction to increase a groove width toward the tread surface 2, in an outer portion about a tire radius direction. In the slant wall portion 8, fine grooves 9 of a width of 0.3 to 1.2 mm and a depth of 0.3 to 1.5 mm are spaced at pitches of 1.4 to 3.0 mm in the tire circumference direction.
Inventors:
Tadao Matsumoto
Application Number:
JP2001347840A
Publication Date:
July 25, 2007
Filing Date:
November 13, 2001
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
B60C11/12; B60C11/04; B60C11/13; (IPC1-7): B60C11/12; B60C11/04; B60C11/13
Domestic Patent References:
| JP3132403A | ||||
| JP2013804U | ||||
| JP9039515A | ||||
| JP10315711A | ||||
| JP7017217A | ||||
| JP3057704A | ||||
| JP7025207A | ||||
| JP2002046425A | ||||
| JP61166708A |
Attorney, Agent or Firm:
Tadashi Naemura
Sumitomo Shintaro
Sumitomo Shintaro
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