Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2000/030876
Kind Code:
A1
Abstract:
A pneumatic tire, wherein sipes (24) twisted by a specified angle from a surface part (28) to a bottom part (30) are provided in a block (18) formed in the surface of a tread, small blocks (18a to 18d) are rotated by a ground contact pressure applied to a tread surface (26) so as to bring adjacent small blocks into contact with each other with a strong force, whereby the small blocks (18a to 18d) are suppressed from being fallen down, the ground contact area of the tread surface (26) is increased, and ice surviving performance is increased and, because a torque (SAT) to return to an original shape is generated by the rotation of the small blocks (18a to 18d), an SAT generated by steel cords can be suppressed.
Inventors:
KOIDE MASAFUMI (JP)
Application Number:
PCT/JP1999/004049
Publication Date:
June 02, 2000
Filing Date:
July 28, 1999
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
KOIDE MASAFUMI (JP)
KOIDE MASAFUMI (JP)
International Classes:
B60C11/11; B60C11/12; (IPC1-7): B60C11/12
Foreign References:
| JPH09323510A | 1997-12-16 | |||
| JPS6045405A | 1985-03-11 |
Other References:
See also references of EP 1072445A4
Attorney, Agent or Firm:
Nakajima, Jun (Nakajima & Kato 7th floor HK-Shinjuku
Building 3-17, Shinjuku 4-chome Shinjuku-ku Tokyo, JP)
Download PDF: