Tread for a pneumatic tire with circumferential slot to prevent the spread of river wear
US4936363A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Aug 15, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S152/901
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tread for a pneumatic tire featuring generally zig-zag ribs defined by wide grooves. Circumferentially extending slots in the ribs are located near the wide grooves. The circumferentially extending slots define an edge zone between the slots and the nearest wide groove and a primary-load zone on the opposite side of the slot. Located in the edge zone there is means for reducing the unit tread pressure in the edge zone as compared to such pressure in the primary-load zone. The circumferential slots together with the means for reducing the unit tread pressure act to provide a breakwater against the spread of irregular wear known as "river wear".
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.