Heavy duty pneumatic tire tread
US4484610A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1982 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Sep 17, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S152/90
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A heavy duty pneumatic tire tread includes a tread portion formed of five ribs separated by four circumferential zig-zag grooves, wherein each groove is made up of successive circumferentially and obliquely alternating one-half pitches having two different lateral widths, each of which remains substantially constant throughout its circumferential extent and wherein, within each one-half groove pitch, when viewed in the lateral direction, the lateral widths of the center grooves are of a first width whereas the lateral widths of the shoulder grooves are in the second width. The oblique angulation of the zig-zag grooves, relative to the circumferential direction of the tire changes every one-half pitch, with the degree of angulation, when viewed in a lateral direction, differing from the center grooves to the shoulder grooves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.