Drip irrigation apparatus
US4519546A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1982 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Jul 8, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A40/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Drip irrigation apparatus including a continuous outer tube and a plurality of low rate determining inserts located at desired locations therealong interiorly of the outer tube, the inserts being selected to have one or more of the following features; an outlet chamber which extends over a significant portion of the circumference of the outer tube; a configuration which allows substantial flattening of the outer tube when not in use, a pressure responsive flow controller; a pressure reducing pathway formed solely or partially by the insert and an air pocket spring defined wholly or partially by the insert for cooperation with a pressure responsive flow controller, thereby providing a flow controller which integrally formed as a single unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.