Reinforcement for tires produced by molding
US4476908A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1983 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Aug 9, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10117
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A tire produced from at least one liquid or paste material which solidifies in a tire mold to form the elastomeric material of the tire, consisting of a crown with two shoulders each connected to a sidewall terminating in a bead containing at least one bead ring, is characterized by the fact that it comprises a number of successive discrete radial hoops which are equally spaced apart in the longitudinal direction of the tire, are identical, consist at least in part of a moldable material, are embedded in the elastomeric material of the tire, are continuous from one bead to the other and are provided at each of their ends with a hook within which the bead ring is arranged, the hook being provided with at least one extension which extends up to a wall of the tire, and by the fact that the hoops, which are manufactured flat, are bent or curved by bringing the bead rings towards each other in the axial direction in order to impose upon the hoops a meridian trajectory corresponding substantially to the meridian curvature of the core of the tire mold, each normal section of each hoop at any given point (N) on the imposed meridian trajectory has a moment of inertia of flexure satisfying t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.