Pneumatic tire having expanded outer tread rubber layer
US5181976A · kind A · utility
8Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1990 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Nov 26, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C11/005
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pneumatic tire having excellent tire performances in winter and summer seasons comprises a tread, a part of which is comprised of an expanded rubber in a volume corresponding to at least 10% of the total volume of the tread at its surface. This expanded rubber contains particular rubber component and particular high reinforcing carbon black and oil, and has particular number of closed cells having a specified cell diameter to the total number of closed cells. Furthermore, a rubber reinforcing layer is arranged near to the tread shoulder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.