Process for producing hoses
US4802938A · kind A · utility
18Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1987 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Aug 11, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S138/07
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing hoses of laminated construction having a plastic inner tube is disclosed which comprises:- (a) extruding a thermoplastic resin on a mandrel to form an inner tube with a predetermined thickness, the mandrel being preformed of a thermoplastic resin or rubber and releasable from the inner tube, (b) laminating an outer tube integrally on the inner tube by extrusion of an unvulcanized rubber to form an integral hose body, (c) vulcanizing the hose body, (d) removing the mandrel from the vulcanized hose body. This hose is characterized by high resistance to load of impulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.