Apparatus for manufacturing reinforced hose
US4790737A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1987 |
| Grant date | Dec 13, 1988 |
| Priority date | — |
| Expiry date | Jun 30, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In an apparatus for manufacturing a reinforced hose, a reinforcing layer-forming device is arranged so as to be concentric with the material efflux port of an outer tube extruder and an inner tube extruder so that inner tube formation, the reinforcing layer formation and the outer tube extruding can be performed continuously and nearly at the same time on a torpedo projected beyond the top end of an inner die of the inner tube extruder. A plurality of extrusion passages into which screws of the extruder is inserted are formed in a cylinder of the inner tube extruder along the extended axial line of an inner head for investing an inner tube of the reinforced hose with a multi-layer structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.