Method of manufacturing tire inner tubes
US3997641A · kind A · utility
0Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1974 |
| Grant date | Dec 14, 1976 |
| Priority date | — |
| Expiry date | Jul 8, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2021/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing tire inner tubes in which the tube is moulded in two annular parts from worked uncured rubber, and the parts are joined but before curing of the rubber is completed the tube is stretched to a larger internal diameter and inflated into a mould with the larger internal diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.