tire
The tire design with optimized grooves and low-heat-generating rubber in the base portion effectively reduces rolling resistance and maintains wet performance, addressing the challenge of belt edge looseness.
JP7797867B2Active Publication Date: 2026-01-14SUMITOMO RUBBER INDUSTRIES LTD
Patent Information
- Application Number
- JP2021211954
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-12-27
- Publication Date
- 2026-01-14
- Estimated Expiration
- 2041-12-27
Smart Images
Figure 0007797867000003 
Figure 0007797867000004 
Figure 0007797867000005
Abstract
To provide a tire 2 which can achieve reduction in rolling resistance without deteriorating WET performance.SOLUTION: A tire 2 comprises a tread 4 and a belt 14. The belt 14 comprises an inner layer 38 and an outer layer 40. Ends of the outer layer 40 are positioned axially inside ends of the inner layer 38. A narrow circumferential groove 48 which extends by continuing in a circumferential direction is formed cut out in a shoulder land part 46s. Groove width of the narrow circumferential groove 48 is narrower than groove width of a shoulder circumferential groove 44s. The narrow circumferential groove 48 is positioned between the shoulder circumferential groove 44s and the end of the outer layer 40 in an axial direction. A ratio of an axial distance from the shoulder circumferential groove 44s to the narrow circumferential groove 48 with respect to an axial direction distance from the shoulder circumferential groove 44s to the end of the outer layer 40 is 15% or more and 55% or less.SELECTED DRAWING: Figure 2
Need to check novelty before this filing date? Find Prior Art
Citation Information
Patent Citations
Pneumatic tire
JP2012081806A
Tire and method of manufacturing tire
JP2021120242A
Tire
WO2021079564A1