Flexible duct having no appreciable variation in length under the effect of an internal pressure
US4867205A · kind A · utility
26Cited by
0References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1986 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Oct 27, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L11/083
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A reinforced flexible duct, particularly for transporting pressurized fluids having an internal pressure reinforcement and a traction resisting reinforcement. The internal pressure reinforcement is wound at a high angle with respect to the axis of the duct and the traction resisting reinforcement comprises at least one pair of crossed layers wound at an angle at most equal to 55.degree.. The modulus of elasticity of the material for the internal pressure resisting reinforcement is smaller than the modulus of elasticity of the material for the traction resisting reinforcement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.