Tread for pneumatic tire
US4221254A · kind A · utility
5Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1978 |
| Grant date | Sep 9, 1980 |
| Priority date | — |
| Expiry date | Feb 14, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S152/902
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tread for a pneumatic tire having a plurality of circumferentially spaced independent projections, each projection has an outer configuration which is basically triangular as viewed in a plane perpendicular to the tread. The projections in the central portion of the tread are oriented such that the leading edges form an angle from about 30.degree. to 60.degree. with respect to the mid-circumferential plane of the tire, and the projections in the shoulder portions are oriented such that the leading edges form an angle from about 30.degree. to 70.degree. with respect to the mid-circumferential plane of the tire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.