Spiral hose
US11649911B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2019 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | May 9, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L11/083
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A spiral hose includes: a tube with a first wall thickness; a first reinforcement package, arranged around a circumference of the tube, having a first rubber layer embedding at least one set of a first and second layer of wire wound in a helical path around the tube, a winding direction of the first layer being opposite from a winding direction of the second layer, which first reinforcement package has a first package thickness; a second reinforcement package, arranged around a circumference of the first reinforcement package, having a second rubber layer embedding at least a second set of a third and fourth layer of wire wound in a helical path around the first reinforcement package, a winding direction of the third layer being opposite from a winding direction of the fourth layer, which second reinforcement package has a second package thickness; and a cover layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.