Front and rear tire tread patterns in a four-wheeled tire/vehicle system
US4984616A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1989 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | May 25, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S152/904
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An improved tire/vehicle system for an automotive vehicle has two pneumatic front tires and two pneumatic rear tires. The rear tire treads are wider than the front tire treads and are divided circumferentially into first and second portions. The first portion of each rear tire tread has a width between 50% and 90% of the rear tire's tread width and is arranged to longitudinally track at least a majority of one of the front tire treads. The second portion of the rear tire tread does not longitudinally track any portion of such front tire tread. Each rear tire tread has a tread groove pattern that is asymmetric in character, the respective net-to-gross ratios in each of the first portions of the rear tire treads being at least 27% different from the net-to-gross ratios of their second portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.