Title:
【発明の名称】空気入りタイヤ
Document Type and Number:
Japanese Patent JP3332357
Kind Code:
B2
Abstract:
A pneumatic tire comprises a tread portion provided with a longitudinal main groove extending continuously in the tire circumferential direction and axial grooves each having at least one opening into the longitudinal main groove, and at least one of two groove walls of each of the axial grooves swells gradually towards the opening. The axial grooves include a groove having two openings and/or a groove having one opening and one closed end. The swelling part of the groove wall can be formed by a convexly curved surface extending from the tread surface towards the groove bottom, and having a single radius of curvature gradually decreasing towards the opening.
Inventors:
Satoshi Tsuda
Application Number:
JP21095699A
Publication Date:
October 07, 2002
Filing Date:
July 26, 1999
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
B60C11/11; B60C11/04; B60C11/12; B60C11/13; (IPC1-7): B60C11/04; B60C11/11; B60C11/13
Domestic Patent References:
| JP7164828A | ||||
| JP4310408A | ||||
| JP6422601A |
Attorney, Agent or Firm:
Tadashi Naemura (1 person outside)