Drip irrigator with pressure responsive flow regulator
US4550878A · kind A · utility
14Cited by
3References
17Claims
0Family size
Inventors
Key dates
| Filing date | Dec 6, 1983 |
| Grant date | Nov 5, 1985 |
| Priority date | — |
| Expiry date | Dec 6, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A40/22
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A fluid flow control device particularly useful as a drip irrigation emitter comprises a body member formed with at least two grooves in spaced parallel relationship separated by a separator wall, one of which grooves leads to the inlet and the other to the outlet; and a flexible member overlapping the two grooves and separator wall so as to meter the flow between the two grooves for substantially the complete length of the separator wall in response to the dynamic pressure of the flowing fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.