Expandable and contractible hose
US8291941B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 2011 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Nov 4, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L11/20
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hose which automatically expands longitudinally and automatically expands laterally upon the application of a fluid pressure is disclosed. The hose can automatically expand longitudinally up to six times its unexpanded or contracted length. Upon release of the fluid pressure within the hose, the hose will automatically contract to a contracted condition. The hose includes an inner tube made from an elastic material and an outer tube made from a non-elastic material. The inner tube is positioned concentrically within the outer tube in both a contracted condition and an expanded condition. The outer tube is secured to the inner tube only at a first end of the inner and outer tubes and at a second end of the inner and outer tubes. The outer tube moves laterally and longitudinally with respect to the inner tube when the tubes are transitioning between a contracted condition and an expanded condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.