Method of producing an annular bead core assembly for a pneumatic tire
US4166492A · kind A · utility
7Cited by
8References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1977 |
| Grant date | Sep 4, 1979 |
| Priority date | — |
| Expiry date | Nov 23, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C15/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of producing an annular bead core assembly for a pneumatic tire from a plurality of wires of substantially rectangular cross-section, wherein the wires are formed into a plurality of plies. The wires of each wire ply then are arcuately deformed in a direction substantially perpendicular to the desired plane of the annular assembly when made but in a direction which will be towards the inner side of the tire when completed, each arcuate deformation yielding an arc having a constant radius. The arcuately deformed wire plies thereafter are wound on a tapered support to form the assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.