Convertible tread for a radial truck or trailer tire
US6481480B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1998 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Nov 12, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S152/902
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A radial ply pneumatic tire 10 for trucks or trailers has a tread 12 with at least three circumferential grooves 20,22 extending circumferentially to divide the tread 12 into at least four parts and lateral grooves 30,31,32,33,34 extending across the at least four parts of the tread to form at least four rows 1,2,3,4 and 5 of circumferentially separated blocks 40. The circumferential grooves 20,22 have average groove widths of W1 for a depth between the radially outer surface of the adjacent blocks and a groove depth that is less than 60% of the non-skid depth D, the circumferential grooves having a second average groove width W2 at the groove depth less than 60% of the non-skid depth D, the second average groove width W2 being less than 50% of W1. The lateral grooves 30,34 in each shoulder row 15 have a first average groove width W3 and a groove depth that is less than 60% of the non-skid depth D. The lateral grooves 31,32,33 in the central rows 2,3 and 4 have a first average length L1 for a depth between a radially outer surface of the adjacent blocks and a groove depth that is less than 60% of the non-skid depth D, the lateral grooves in the central rows having a second average …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.