Manufacture of pneumatic tires
US4057447A · kind A · utility
4Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1975 |
| Grant date | Nov 8, 1977 |
| Priority date | — |
| Expiry date | Oct 3, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D2030/084
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for making tires. The tire is first formed in two or more parts from uncured rubber, in mould cavities provided with locking sprues to retain the moulded tire part in a desired section of the moulding. The mould is pressurized, at least when moulding the tire sidewalls, then opened and the moulded uncured tire parts carried in parts of the mould are brought together and joined under heat and pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.