pneumatic tires
The pneumatic tire design with a thinner sealant layer in specific regions and sound-absorbing material coverage maintains air sealing performance while reducing tire weight, addressing the weight increase issue in existing designs.
JP7797871B2Active Publication Date: 2026-01-14SUMITOMO RUBBER INDUSTRIES LTD
Patent Information
- Application Number
- JP2021214274
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-12-28
- Publication Date
- 2026-01-14
- Estimated Expiration
- 2041-12-28
Smart Images
Figure 0007797871000003 
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Figure 0007797871000005
Abstract
To provide a pneumatic tire capable of suppressing the degradation of air sealing performance due to a sound absorbing material.SOLUTION: A pneumatic tire 1 having a tread portion 2, includes a self-sealing type sealant layer 10 arranged on a tire inner cavity i of the tread portion 2, and a sponge-like sound absorbing material 12 adhered to the sealant layer 10. The sealant layer 10, in a front view of the tire inner cavity i, includes a first area 101 whose surface is covered by the sound absorbing material 12, and a second area 102 whose surface is not covered by the sound absorbing material 12. On a first tire cross-section, the thickness of the sealant layer in at least a part of the first area 101 is smaller than the thickness of the sealant layer in the second area 102.SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
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