Forming apparatus for a breaker layer to be used in a radial tire
US4063987A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 1976 |
| Grant date | Dec 20, 1977 |
| Priority date | — |
| Expiry date | Mar 19, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D2030/3264
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved forming apparatus for a breaker layer to be used in a radial tire is described herein. The apparatus essentially comprises a drum device (D), a press contact device (A), first and second breaker material folding-wrapping devices (B) and (C), means for rotating said drum device (D), and means for moving said respective devices (A), (B) and (C) in the axial direction relative to said drum device (D) and for fixing them at predetermined positions. The drum device (D) includes a plurality of segments which have a width of their outer circumferential surfaces approximately equal to the width of the breaker layer to be formed, which can form a substantially cylindrical press contact surface with their outer circumferential surfaces, and which can expand and contract the diameter of said cylindrical contact surface. The press contact device (A) also includes a plurality of segments which can be displaced radially inwards and outwards, and which form a substantially cylindrical press contact surface with their inner circumferential surface concentrically with the cylindrical press contact surface of said drum device (D) when they are displaced inwards. The first and second brea…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.