PNEUMATIC TIRE

• Main Author: NARUSE KAORI
• Format: Patent
• Language: English
• Published: 18.05.2006
• Subjects: DEVICES OR ARRANGEMENTS RELATED TO TYRES; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; VEHICLE TYRES; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of suppressing an eccentric wear generated in the land of each block effectively from the initial period of tire wearing to the final period. SOLUTION: The tire has a tread part 1 furnished with circumferentially stretching grooves 2a-2d and transverse grooves 3a-3e having communication with the circumferential grooves 2a-2d, and the tread part 1 is divided into a plurality of block lands 5a-5e. The circumferential grooves 2a and 2d are furnished each with a groove bottom bulge 6 having a groove depth d1smaller than the groove depth d2of the other parts and stretching in the tire circumferential direction. The block lands 5a, 5b, 5d, 5e have each an apex face in a curved surface where the land height h decreases gradually from the inner land part 7 toward at least one end 8a/8b or corner 9a-9d. The groove depth d1of the bulge 6 is set so that the outermost end 10 in the tire radial direction is out of contacting with the road surface in the initial period of tire wearing under the specified statically loaded conditions, and in the middle period and thereafter, the outermost end 10 is in contact with the road surface. COPYRIGHT: (C)2006,JPO&NCIPI