Pneumatic tire having improved wet traction
US5503206A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1994 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | Apr 11, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2011/0374
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A directional high performance pneumatic tire having improved wet traction has an annular aqua channel and lateral grooves which direct water from the footprint to the shoulder area of the tire to help prevent hydroplaning. The aqua channel has an extended U-shape wherein one wall of the aqua channel has a steeper incline than the other side of the aqua channel. At least one side of each aqua channel is defined by lugs of various lengths, and longer lugs of the lugs of various lengths extend into the aqua channels and have an inclined wall. The varying length of the lugs cause the aqua channel to vary in width, and the aqua channel, in the narrower portion varies in width from 7-12% of the tread width, and in the wider portion varies in width from 17% to 22% of the tread width. In a preferred embodiment, the aqua channel may have a step between its shoulder side and its center side wherein the shoulder side is higher by a distance d. In one illustrated embodiment, a center tread portion of the tire, bounded by an aqua channel and a center groove, and two lateral grooves, comprises a single block element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.